Polymerization reaction device for nylon processing

Abstract

The utility model belongs to the technical field of nylon processing, particularly relates to a polymerization reaction device for nylon processing, and aims to solve the problems that the heat transfer efficiency is influenced, materials are heated unevenly and the reaction efficiency is low due to the fact that the materials are easy to adhere to the inner wall of the device when the temperature of the existing materials rises. An inner container is arranged in the shell, and a heat preservation layer and a heating layer are sequentially arranged between the shell and the inner container from outside to inside. The stirring assembly is arranged in the inner container, so that up-down circulating flowing of materials is achieved, it is guaranteed that the materials are evenly heated, meanwhile, sufficient mixing of additives is promoted, and the product quality is improved; through the two inner wall scraping brush assemblies, materials adhered to the inner wall of the inner container can be scraped off in real time, the problem of uneven heating caused by adhesion is solved, the reaction efficiency is improved, direct friction between the scraping plates and the inner wall of the inner container is reduced through the design of the moving wheels, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of nylon processing, in particular to a polymerization reaction device for nylon processing. Background Art

[0002] In the nylon processing industry, polymerization reaction is a key step in the preparation of high-performance nylon materials. Usually, suitable monomers are selected as raw materials for the polymerization reaction and added to the polymerization reaction device. The monomers are mixed in a certain proportion, and appropriate amounts of water, catalysts and other additives are added. The reaction conditions (such as temperature, pressure, pH value, etc.) are adjusted to allow polymerization reaction to occur between the monomers, thereby generating nylon.

[0003] Because the polymerization reaction needs to be carried out at a certain temperature, when the material temperature rises, the viscosity of the material will also increase, and it is easy to adhere to the inner wall of the device, affecting the heat transfer efficiency, causing uneven heating of the material and low reaction efficiency, and also increasing the difficulty of cleaning and energy consumption costs. Therefore, we proposed a polymerization reaction device for nylon processing to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art that when the material temperature rises, it is easy to adhere to the inner wall of the device, which affects the heat transfer efficiency, causes uneven heating of the material and low reaction efficiency, and proposes a polymerization reaction device for nylon processing.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A polymerization reaction device for nylon processing, comprising an outer shell, an inner shell being arranged inside the outer shell, an insulation layer and a heating layer being arranged between the outer shell and the inner shell from outside to inside in sequence, a sealing cover being arranged at an opening of the outer shell, a feed port being fixedly arranged on the top of the sealing cover, the feed port being communicated with the inside of the inner shell, a discharge port being arranged at the bottom of the inner shell, and the discharge port extending to the outside of the outer shell through a conduit, an exhaust pipe being fixedly arranged on the top of the sealing cover, the exhaust pipe being communicated with the inner shell, a pressure gauge being arranged on the top of the exhaust pipe, and an electric valve for pressure relief being fixedly connected to one side of the exhaust pipe;

[0007] The device also includes:

[0008] A stirring component, which is arranged inside the inner container and is used to stir the inside of the inner container;

[0009] Two sets of inner wall scraping brush assemblies are arranged on the stirring assembly and are used to brush the inner wall of the inner pot to prevent the material from adhering to the inner wall of the inner pot and causing uneven heating in the inner pot.

[0010] In one possible design, the stirring assembly includes a stirring rod, which is located inside the inner pot, the top of the stirring rod passes through the bottom inner wall of the sealing cover and is rotatably connected to the sealing cover, a spiral blade is fixedly sleeved on the stirring rod, and a driving assembly for driving the stirring rod to rotate is provided on the top of the sealing cover.

[0011] In one possible design, the drive assembly includes a protective shell, which is fixedly arranged on the top of the sealing cover, the top of the stirring rod extends into the interior of the protective shell and is rotatably connected to the protective shell, and a motor is fixedly arranged on the top of the protective shell, and the output end of the motor extends into the interior of the protective shell and is fixedly connected to the stirring rod.

[0012] In a possible design, the inner wall scraper assembly includes two limiting tubes, which are symmetrically fixed on one side of the stirring rod, one end of each limiting tube is fixedly provided with a fixed tube, the inner walls of the two limiting tubes are slidably connected with a moving rod, the two moving rods pass through the fixed tube and extend to the outside of the limiting tube, one end of the two moving rods is fixedly connected to the same fixed rod, and a scraper is fixedly provided on one side of the fixed rod close to the inner wall of the inner tank, and the scraper is in contact with the inner wall surface of the inner tank.

[0013] In a possible design, both ends of the fixed rod are rotatably connected to movable wheels, and the outer surfaces of the two movable wheels are in contact with the inner wall surface of the inner container. By providing movable wheels, the friction with the inner wall surface of the inner container is reduced.

[0014] In a possible design, a compression spring is disposed inside the position limiting tube, one end of the compression spring is fixedly connected to the position limiting tube, and the other end of the compression spring is fixedly connected to the moving rod.

[0015] In a possible design, a plurality of material leveling rods are arranged at equal intervals on one side of the fixed rod close to the stirring rod.

[0016] In the present application, the materials and additives are introduced into the inner tank through the feed port, and then the heating layer heats the inner tank through an external heat source. The insulation layer arranged between the outer shell and the heating layer reduces heat loss, provides a stable temperature environment for the reaction, and ensures that the reaction temperature is constant.

[0017] The motor in the driving assembly is started, and the motor drives the stirring rod and the spiral blades on it to rotate. The rotation of the spiral blades causes the material in the middle to move upward and the material around to move downward, thus forming an up and down circulating material flow, which not only makes the material heated evenly, but also promotes the mixing of additives.

[0018] During the stirring process, the inner wall scraper brush assembly on the stirring rod rotates with the stirring rod at the same time, and the moving rod is pushed by the compression spring in the limit tube, so that the scraper on the fixed rod is close to the inner wall of the inner tank. After the stirring rod drives the fixed rod to rotate, the scraper rotates along the inner wall of the inner tank to scrape off the material adhering to the inner wall of the inner tank. Multiple material mixing rods arranged on the side of the fixed rod close to the stirring rod stir the material moving downward, further accelerate the mixing of additives and make the material heated evenly. At the same time, the design of the moving wheel arranged on the fixed rod reduces the friction between the scraper and the inner wall of the inner tank, protects the inner tank and prolongs its service life.

[0019] The exhaust pipe is connected to the inner tank, and the pressure gauge installed on the top monitors the pressure changes during the reaction process in real time. When the pressure exceeds the set value, the electric valve automatically opens to release the pressure to ensure the safe reaction. Raw materials and additives are added through the feed port on the top of the sealing cover. After the reaction is completed, the duct valve at the discharge port is opened to discharge the product, ensuring the sealing of the reaction process and preventing external contamination.

[0020] Beneficial effects:

[0021] In the utility model, the polymerization reaction device for nylon processing is provided with a stirring assembly inside the inner tank to realize the upward and downward circulation of the material, thereby ensuring that the material is heated evenly and promoting the full mixing of the additives to improve the product quality.

[0022] In the utility model, the polymerization reaction device for nylon processing can scrape off the materials adhered to the inner wall of the inner tank in real time through two sets of inner wall scraping brush components, thereby preventing the problem of uneven heating caused by adhesion and improving the reaction efficiency;

[0023] In the utility model, in the polymerization reaction device for nylon processing, the design of the moving wheel reduces the direct friction between the scraper and the inner wall of the inner tank, thereby extending the service life of the equipment.

[0024] In the utility model, a stirring component is arranged inside the inner tank to realize the upward and downward circulation of materials, ensure the materials are heated evenly, promote the full mixing of additives and improve the product quality. Through two sets of inner wall scraping brush components, the materials adhered to the inner wall of the inner tank can be scraped off in real time to prevent the problem of uneven heating caused by adhesion and improve the reaction efficiency. The design of the moving wheel reduces the direct friction between the scraper and the inner wall of the inner tank and prolongs the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a polymerization reaction device for nylon processing proposed by the utility model;

[0026] Figure 2 This is a partial cross-sectional three-dimensional structural schematic diagram of a polymerization reaction device for nylon processing proposed by the utility model;

[0027] Figure 3 This is a three-dimensional structural schematic diagram of a stirring device of a polymerization reaction device for nylon processing proposed by the utility model;

[0028] Figure 4 The utility model discloses a three-dimensional structural schematic diagram of a part of a stirring device of a polymerization reaction device for nylon processing.

[0029] In the figure: 1. outer shell; 2. liner; 3. sealing cover; 4. protective shell; 5. motor; 6. feed port; 7. exhaust pipe; 8. pressure gauge; 9. electric valve; 10. stirring rod; 11. spiral blade; 12. limit tube; 13. fixed tube; 14. moving rod; 15. fixed rod; 16. scraper; 17. moving wheel; 18. material leveling rod; 19. compression spring; 20. insulation layer; 21. heating layer; 22. discharge port. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Example 1

[0032] Reference Figure 1-4 A polymerization reaction device includes an outer shell 1, an inner tank 2, an insulation layer 20, a heating layer 21, a sealing cover 3, a feed port 6, a discharge port 22, an exhaust pipe 7, a pressure gauge 8, an electric valve 9, a stirring component and two sets of inner wall scraping brush components.

[0033] The outer shell 1 serves as the main frame of the entire device, and an inner liner 2 is arranged inside it for accommodating raw materials and reactants in the nylon processing process. Between the outer shell 1 and the inner liner 2, an insulation layer 20 and a heating layer 21 are arranged in sequence from the outside to the inside, wherein the insulation layer is made of glass wool or aluminum silicate insulation felt with excellent thermal insulation performance and high temperature resistance, and is covered on the outer wall of the heating layer 21 for insulating the interior thereof, while the heating layer 21 circulates external heat transfer oil or steam in the internal interlayer of the heating layer 21 through an external circulation pump, transfers heat to the inner liner 2, and then heats the raw materials in the inner liner 2. A sealing cover 3 is installed at the opening of the outer shell 1 to ensure the sealing of the reaction process. A feed port 6 is provided on the top of the sealing cover 3, through which raw materials can be added to the inner liner 2. A discharge port 22 is provided at the bottom of the inner liner 2, and extends to the outside of the outer shell 1 through a conduit to facilitate the discharge of the product after the reaction is completed.

[0034] In addition, an exhaust pipe 7 is fixed on the top of the sealing cover 3, and the exhaust pipe 7 is connected to the inside of the inner tank 2 and is used to discharge the gas generated during the reaction. A barometer 8 is installed on the top of the exhaust pipe 7 to monitor the air pressure inside the inner tank 2 in real time. At the same time, an electric valve 9 for pressure relief is connected to one side of the exhaust pipe 7, which can be opened automatically or manually to release the pressure when the air pressure is too high.

[0035] The stirring assembly is mainly composed of a stirring rod 10, a spiral blade 11 and a driving assembly. The stirring rod 10 is located inside the inner tank 2, and its top passes through the bottom of the sealing cover 3 and is rotatably connected to the sealing cover 3. The stirring rod 10 is fixedly sleeved with a spiral blade 11, which is used to push and mix the material in the inner tank 2 during rotation. The spiral blade 11 rotates under the drive of the rotating stirring rod 10, so that the material in the middle rotates and flows upward through the spiral blade 11, while the surrounding material moves downward, thereby forming an up and down circulation, which not only makes the material heated evenly, but also allows the additives added therein to be mixed.

[0036] The driving assembly includes a protective shell 4 and a motor 5. The protective shell 4 is fixedly arranged on the top of the sealing cover 3. The top of the stirring rod 10 extends into the interior of the protective shell 4 and is rotatably connected to the protective shell 4. The motor 5 is fixedly installed on the top of the protective shell 4, and its output end extends into the interior of the protective shell 4 and is fixedly connected to the stirring rod 10, thereby driving the stirring rod 10 and the spiral blade 11 to rotate.

[0037] Two groups of inner wall scraping brush assemblies are respectively arranged on both sides of the stirring assembly, and are used to scrape the inner wall of the inner tank 2 to prevent material adhesion. Each group of scraping brush assemblies includes two limiting tubes 12, a fixed tube 13, a moving rod 14, a fixed rod 15, a scraper 16, a moving wheel 17, a material leveling rod 18 and a compression spring 19. The limiting tube 12 is symmetrically fixed on one side of the stirring rod 10, and one end of the limiting tube 12 is fixedly connected to the fixed tube 13. The moving rod 14 is slidably connected in the limiting tube 12 and extends to the outside of the limiting tube 12 through the fixed tube 13. One end of the two moving rods 14 is commonly fixedly connected to the fixed rod 15. The fixed rod 15 is provided with a scraper 16. The scraper 16 is tightly fitted to the inner wall surface of the inner tank 2 to ensure the scraping effect. The scraper 16 moves on the inner wall surface of the inner tank 2, which not only scrapes off the inner wall material adhered to the inner tank 2, but also prevents uneven heating in the inner tank 2 due to material adhesion.

[0038] The present application can be used in the field of nylon processing technology, and can also be used in other fields applicable to the present application.

[0039] Example 2

[0040] refer to Figure 3-4, improved on the basis of Example 1: a polymerization reaction device for nylon processing, which is applied to the field of nylon processing technology. In order to reduce the friction between the scraper 16 and the inner wall of the liner 2, both ends of the fixed rod 15 are rotatably connected to the moving wheels 17, and the outer surface of the moving wheel 17 contacts the inner wall of the liner 2. In addition, a compression spring 19 is provided inside the limiting tube 12, one end of which is fixedly connected to the limiting tube 12, and the other end is fixedly connected to the moving rod 14 to provide an adaptive pressure between the scraper 16 and the inner wall of the liner 2. In order to further make the material heated evenly and the added reagents can be fully mixed, a plurality of material leveling rods 18 are evenly spaced on one side of the fixed rod 15 close to the stirring rod 10.

[0041] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 5 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selections according to their needs or convenience.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polymerization reaction device for nylon processing, comprising a shell (1), an inner liner (2) is arranged inside the shell (1), and an insulation layer (20) and a heating layer (21) are arranged between the shell (1) and the inner liner (2) from the outside to the inside, the shell (1) is provided with a sealing cover (3) at the opening, a feed port (6) is fixedly arranged on the top of the sealing cover (3), and the feed port (6) is connected to the inside of the inner liner (2), and a discharge port (22) is arranged at the bottom of the inner liner (2), and the discharge port (22) extends to the outside of the shell (1) through a conduit, characterized in that An exhaust pipe (7) is fixedly arranged on the top of the sealing cover (3), the exhaust pipe (7) is connected to the inner container (2), a pressure gauge (8) is arranged on the top of the exhaust pipe (7), and an electric valve (9) for pressure relief is fixedly connected to one side of the exhaust pipe (7); The device also includes: A stirring component, the stirring component is arranged inside the inner container (2) and is used to stir the inside of the inner container (2); Two sets of inner wall scraping brush assemblies are arranged on the stirring assembly and are used to brush the inner wall of the inner pot (2) to prevent the material from adhering to the inner wall of the inner pot (2) and causing uneven heating in the inner pot (2).

2. A polymerization reaction device for nylon processing according to claim 1, characterized in that: The stirring assembly comprises a stirring rod (10), wherein the stirring rod (10) is located inside the inner pot (2), the top of the stirring rod (10) passes through the bottom inner wall of the sealing cover (3) and is rotatably connected to the sealing cover (3), a spiral blade (11) is fixedly sleeved on the stirring rod (10), and a driving assembly for driving the stirring rod (10) to rotate is arranged on the top of the sealing cover (3).

3. A polymerization reaction device for nylon processing according to claim 2, characterized in that: The driving assembly comprises a protective shell (4), wherein the protective shell (4) is fixedly arranged on the top of the sealing cover (3), the top of the stirring rod (10) extends into the interior of the protective shell (4) and is rotatably connected to the protective shell (4), and a motor (5) is fixedly arranged on the top of the protective shell (4), and the output end of the motor (5) extends into the interior of the protective shell (4) and is fixedly connected to the stirring rod (10).

4. A polymerization reaction device for nylon processing according to claim 1, characterized in that: The inner wall scraping brush assembly comprises two limiting tubes (12), the two limiting tubes (12) are symmetrically fixedly arranged on one side of the stirring rod (10), one end of the two limiting tubes (12) is fixedly arranged with a fixed tube (13), the inner walls of the two limiting tubes (12) are slidably connected with a moving rod (14), the two moving rods (14) pass through the fixed tube (13) and extend to the outside of the limiting tube (12), one end of the two moving rods (14) is fixedly connected with the same fixed rod (15), and a scraper (16) is fixedly arranged on one side of the fixed rod (15) close to the inner wall of the inner tank (2), and the scraper (16) is in contact with the inner wall surface of the inner tank (2).

5. A polymerization reaction device for nylon processing according to claim 4, characterized in that: Both ends of the fixed rod (15) are rotatably connected to moving wheels (17), and the outer surfaces of the two moving wheels (17) are in contact with the inner wall surface of the inner container (2). By providing the moving wheels (17), the friction force with the inner wall surface of the inner container (2) is reduced.

6. A polymerization reaction device for nylon processing according to claim 5, characterized in that: A compression spring (19) is arranged inside the position limiting tube (12), one end of the compression spring (19) is fixedly connected to the position limiting tube (12), and the other end of the compression spring (19) is fixedly connected to the moving rod (14).

7. A polymerization reaction device for nylon processing according to claim 4, characterized in that: A plurality of material leveling rods (18) are arranged at equal intervals on one side of the fixed rod (15) close to the stirring rod (10).

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