Reaction kettle for polyamide polymerization
By introducing stirring blades and scrapers to remove residues from the reactor wall and using a cutter to cut polyamide into small particles, the problem of adipic acid and hexamethylenediamine sticking together was solved, thus improving the quality and efficiency of polyamide synthesis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-27
AI Technical Summary
Adipic acid and hexamethylenediamine tend to stick to the inner wall of the reactor during polyamide synthesis, leading to incomplete reaction and affecting product quality and efficiency.
Design a reaction vessel with stirring blades and scrapers. The stirring blades drive the scrapers to move along the vessel wall via a fixed shaft to scrape off the residue. At the same time, a cutter is set to cut the semi-liquid polyamide into small particles, which facilitates subsequent processing and storage.
It effectively removes residues from the reactor wall, ensuring uniform reaction, improving product quality and production efficiency, promoting the reaction process, and facilitating subsequent processing and transportation.
Smart Images
Figure CN224040972U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to polyamide technical field, especially, relate to a polyamide polymerization is with the reation kettle. BACKGROUND
[0002] Polyamide is an important engineering plastics, is widely used in textile, automobile, electronics and machinery and many other fields, its synthesis process usually through polycondensation reaction is realized, the polymerization reaction needs to be carried out under the control condition, to ensure that the degree of polymerization, molecular weight and so on index reaches the required standard, polyamide production usually adopts the polycondensation reaction of adipic acid and hexamethylene diamine.
[0003] In the existing polyamide polymerization process, adipic acid and hexamethylene diamine can be adhered to the inner wall of the reaction kettle, and the stirrer is located in the center of the reaction kettle, which can cause the residual adipic acid and hexamethylene diamine on the inner wall of the reaction kettle to be unable to fully react and polymerize, thereby reducing the quality of the subsequent reactants. Therefore, we propose a polyamide polymerization reaction kettle. UTILITY MODEL CONTENT
[0004] The utility model discloses a polyamide polymerization reaction kettle, which rotates the stirring blade and drives the fixed shaft to move in a circle. Due to the limitation of the chute, the chute always moves along the inner wall of the reaction kettle, scrapes the residual reactants on the wall of the reaction kettle, and solves the problem that adipic acid and hexamethylene diamine can be adhered to the inner wall of the reaction kettle.
[0005] To solve the above technical problems, the utility model is realized by the following technical schemes:
[0006] The utility model discloses a polyamide polymerization reaction kettle, which comprises a reaction kettle, a stirring mechanism arranged inside the reaction kettle, and a cutting mechanism arranged at the bottom of the reaction kettle.
[0007] The stirring mechanism comprises a fixed frame fixedly connected to the top of the reaction kettle, a motor fixedly connected to the top of the fixed frame, a rotating shaft fixedly connected to the output shaft at the bottom of the motor through a shaft coupling, a sieve plate fixedly connected to the inside of the reaction kettle, a heater fixedly connected to the outer wall of the reaction kettle, a stirring blade fixedly connected to the bottom of the rotating shaft, a cooler fixedly connected to the outer wall of the reaction kettle, a fixed block fixedly connected to the outer wall of the stirring blade, a fixed shaft fixedly connected to the inner wall of the fixed block, a gear rotatably connected to the bottom of the fixed shaft, a gear ring fixedly connected to the inner wall of the reaction kettle, a chute formed in the inside of the gear ring, a scraper fixedly connected to the outer wall of the fixed shaft, and a plug block clamped to the inner wall of the reaction kettle.
[0008] Further, the sieve plate is rotatably connected to the outer wall of the rotating shaft, the gear is meshed with the outer wall of the gear ring, and the scraper is slidably connected to the inner wall of the chute.
[0009] Further, the cutting mechanism comprises a support fixedly connected to the outer wall of the heater, a shell is fixedly connected to the bottom of the support, and a second sliding groove is formed in the shell.
[0010] Further, a telescopic rod is fixedly connected to the inner wall of the second sliding groove, a cutter is fixedly connected to the outer wall of the telescopic rod, and a spring is fixedly connected to the outer wall of the cutter.
[0011] Further, one end of the spring away from the cutter is fixedly connected to the inner wall of the second sliding groove, and the telescopic rod is located on the inner side of the spring.
[0012] Further, a fixed plate is fixedly connected to the inner wall of the shell, a second fixed shaft is rotatably connected to the top of the fixed plate, and a rotating block is fixedly connected to the outer wall of the second fixed shaft.
[0013] Further, the rotating block is located on the inner side of the cutter, and a first belt pulley is fixedly connected to the outer wall of the second fixed shaft.
[0014] Further, the outer wall of the first belt pulley is in transmission connection with a belt, one end of the belt away from the first belt pulley is in transmission connection with a second belt pulley, and the inner wall of the second belt pulley is fixedly connected to the outer wall of the rotating shaft.
[0015] The utility model has the following beneficial effects:
[0016] 1. The utility model discloses a stirring blade, first, solid adipic acid and hexamethylene diamine are put into the reaction kettle, but will be blocked by the sieve plate, at this moment, the heater is started to heat solid adipic acid and hexamethylene diamine, when melting, enter the reaction kettle inside through the sieve plate, then the motor is started to drive the rotating shaft to rotate, and then drive the stirring blade to rotate, so that the melted adipic acid and hexamethylene diamine react and polymerize, this mechanism can scrape adipic acid and hexamethylene diamine sticking to the inner wall of the reaction kettle, can eliminate local concentration difference in the reaction process, and can improve the quality of final product and the efficiency of the reaction process.
[0017] 2. The utility model discloses a cutter, first, the inside of the shell is filled with cold water, when the semi-liquid polyamide flows downward, the second belt pulley is driven to rotate in the process that the rotating shaft rotates, and then drive the belt to move, so that the first belt pulley rotates, when the first belt pulley rotates, the second fixed shaft is driven to rotate, so that the rotating block rotates, when the rotating block rotates a quarter of a circle, the fixed plate on both sides is extruded, this mechanism can cut the polyamide into small granular shape by the cutter, is favorable to subsequent processing and use, is convenient for storage and transportation, and improves production efficiency.
[0018] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages mentioned above. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0020] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0021] Figure 2 It is a schematic diagram of the structure of the stirring mechanism of the present application.
[0022] Figure 3 It is a schematic diagram of the structure of the cutting mechanism of the present application. Figure 2 It is a schematic diagram of the enlarged structure at A in the present application.
[0023] Figure 4 It is a schematic diagram of the structure of the cutting mechanism of the present application.
[0024] Figure 5 It is a schematic diagram of the structure of the cutting mechanism of the present application. Figure 4 It is a schematic diagram of the enlarged structure at B in the present application.
[0025] In the drawings, the component list represented by each reference numeral is as follows:
[0026] 101, reaction kettle; 2, stirring mechanism; 201, fixed frame; 202, motor; 203, rotating shaft; 204, sieve plate; 205, heater; 206, stirring blade; 207, cooler; 208, fixed block; 209, gear; 210, fixed shaft; 211, scraper; 212, chute; 213, gear ring; 214, blockage block; 3, cutting mechanism; 301, support; 302, housing; 303, chute two; 304, telescopic rod; 305, spring; 306, cutter; 307, fixed plate; 308, fixed shaft two; 309, rotating block; 310, pulley one; 311, belt; 312, pulley two. DETAILED DESCRIPTION
[0027] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] Please refer to Figures 1-5As shown, the utility model is a kind of polyamide polymerization reaction kettle, including reaction kettle 101, stirring mechanism 2 is arranged in reaction kettle 101, cutting mechanism 3 is arranged in the bottom of reaction kettle 101, stirring mechanism 2 includes the fixed frame 201 of reaction kettle 101 top fixed connection, by being arranged fixed frame 201, to place motor 202, fixed frame 201 top fixed connection has motor 202, the output shaft of motor 202 bottom is fixedly connected with rotating shaft 203 by coupling, reaction kettle 101 inside fixedly connected with sieve plate 204, reaction kettle 101 outer wall is fixedly connected with heater 205, by being arranged sieve plate 204, to block solid adipic acid and hexamethylene diamine, rotating shaft 203 bottom fixedly connected with stirring blade 206, reaction kettle 101 outer wall is fixedly connected with cooler 207, stirring blade 206 outer wall is fixedly connected with fixed block 208, fixed block 208 inner wall is fixedly connected with fixed shaft 210, by being arranged cooler 207, the reactant after polymerization is cooled, fixed shaft 210 bottom rotationally connected with gear 209, reaction kettle 101 inner wall is fixedly connected with gear ring 213, gear ring 213 is internally provided with chute 212, fixed shaft 210 outer wall is fixedly connected with scraper 211, by being arranged scraper 211, the reactant remaining on the inner wall of reaction kettle 101 is scraped, reaction kettle 101 inner wall is clamped with blockage block 214, sieve plate 204 inner wall is rotatably connected with rotating shaft 203 outer wall, gear 209 outer wall is engaged with gear ring 213 outer wall, the outer wall of scraper 211 is slidably connected with the inner wall of chute 212, by being arranged blockage block 214, the reactant of polymerization not yet completed is blocked, cutting mechanism 3 includes the support 301 of fixed connection in the outer wall of heater 205, the bottom of support 301 is fixedly connected with shell 302, shell 302 is internally provided with chute two 303, by being arranged chute two 303, it is convenient for cutter 306 to slide in chute two 303.
[0029] Chute two 303 inner wall is fixedly connected with telescopic rod 304, telescopic rod 304 outer wall is fixedly connected with cutter 306, cutter 306 outer wall is fixedly connected with spring 305, the end of spring 305 away from cutter 306 is fixedly connected with the inner wall of chute two 303, by being arranged cutter 306, the semi-liquid polyamide is cut, telescopic rod 304 is located in the inside of spring 305, the inner wall of shell 302 is fixedly connected with fixed plate 307, fixed plate 307 top rotationally connected with fixed shaft two 308, fixed shaft two 308 outer wall is fixedly connected with rotating block 309, by being arranged rotating block 309, cutter 306 on both sides is extruded.
[0030] The rotating block 309 is located inside the cutter 306, the outer wall of the fixed shaft two 308 is fixedly connected with the belt pulley one 310, the outer wall of the belt pulley one 310 is drivingly connected with the belt 311, one end of the belt 311 away from the belt pulley one 310 is drivingly connected with the belt pulley two 312, by arranging the belt pulley one 310, the fixed shaft two 308 is conveniently driven to rotate, and the inner wall of the belt pulley two 312 is fixedly connected with the outer wall of the rotating shaft 203.
[0031] One specific application of the embodiment is:
[0032] First, the solid adipic acid and hexamethylene diamine are put into the reaction kettle 101, but are blocked by the sieve plate 204, at this time the heater 205 is started to heat the solid adipic acid and hexamethylene diamine, when melted, pass through the sieve plate 204 into the inside of the reaction kettle 101, then the motor 202 is started to drive the rotating shaft 203 to rotate, and then drive the stirring blade 206 to rotate, so that the melted adipic acid and hexamethylene diamine are reacted and polymerized, when the stirring blade 206 rotates, the fixed block 208 is driven to rotate in a circle, then the gear 209 is driven to rotate, and the fixed shaft 210 is also driven to move in a circle, due to the restriction of the sliding groove 212, the sliding groove 212 always moves along the inner wall of the reaction kettle 101 to scrape the residual reactants on the wall of the reaction kettle 101, when the polymerization is completed, the cooler 207 is started to cool the polymer inside, when cooled to semi-liquid, the blocking block 214 is opened, so that the semi-liquid polyamide flows downward, this mechanism can ensure uniform mixing of the reactants, increase the contact between them, promote the reaction, avoid uneven reaction and improve the quality of the final product, first, the inside of the shell 302 is filled with cold water, when the semi-liquid polyamide flows downward, the belt pulley two 312 is driven to rotate in the process of rotating the rotating shaft 203, then drive the belt 311 to move, so that the belt pulley one 310 rotates, when the belt pulley one 310 rotates, the fixed shaft two 308 is driven to rotate, so that the rotating block 309 rotates, when the rotating block 309 rotates one quarter of a circle, the fixed plates 307 on both sides are extruded, so that the springs 305 in the sliding groove two 303 are compressed, continue to rotate one quarter of a circle, because the cutter 306 has no supporting force, at this time the reaction force of the spring 305 extrudes the cutter 306, so that the cutters 306 on both sides of the rotating block 309 are close to each other, cut the semi-liquid polyamide flowing downward, and the part of the polyamide after cutting flows into the inside of the shell 302 and is quickly cooled by the cold water, so as to form small particle polyamide, this mechanism can cut the polyamide into small particles by the cutter 306, which is beneficial to subsequent processing and use, convenient for storage and transportation, and improves production efficiency.
[0033] In the description of the specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0034] The preferred embodiments of the utility model disclosed above are only used for helping to explain the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to only the specific implementation manners described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited only by the claims and the entire scope and equivalents thereof.
Claims
1. A reaction vessel for polyamide polymerization comprising a reaction vessel (101), characterized in that: The reaction kettle (101) is internally provided with a stirring mechanism (2), and the bottom of the reaction kettle (101) is provided with a cutting mechanism (3); The stirring mechanism (2) comprises a fixed frame (201) fixedly connected to the top of the reaction kettle (101), a motor (202) fixedly connected to the top of the fixed frame (201), a rotating shaft (203) fixedly connected to the bottom output shaft of the motor (202) through a shaft coupling, a sieve plate (204) fixedly connected to the inside of the reaction kettle (101), a heater (205) fixedly connected to the outer wall of the reaction kettle (101), stirring blades (206) fixedly connected to the bottom of the rotating shaft (203), a cooler (207) fixedly connected to the outer wall of the reaction kettle (101), a fixed block (208) fixedly connected to the outer wall of the stirring blades (206), a fixed shaft (210) fixedly connected to the inner wall of the fixed block (208), a gear (209) rotatably connected to the bottom of the fixed shaft (210), a gear ring (213) fixedly connected to the inner wall of the reaction kettle (101), a sliding groove (212) formed in the inside of the gear ring (213), a scraper (211) fixedly connected to the outer wall of the fixed shaft (210), and a plugging block (214) clamped to the inner wall of the reaction kettle (101).
2. The reactor for polyamide polymerization according to claim 1, wherein The inner wall of the sieve plate (204) is rotatably connected to the outer wall of the rotating shaft (203), the outer wall of the gear (209) is meshed with the outer wall of the gear ring (213), and the outer wall of the scraper (211) is slidably connected to the inner wall of the sliding groove (212).
3. The reactor for polyamide polymerization according to claim 1, wherein The cutting mechanism (3) comprises a support (301) fixedly connected to the outer wall of the heater (205), a housing (302) fixedly connected to the bottom of the support (301), and a sliding groove (303) formed in the inside of the housing (302).
4. The reactor for polyamide polymerization according to claim 3, wherein A telescopic rod (304) is fixedly connected to the inner wall of the sliding groove (303), a cutter (306) is fixedly connected to the outer wall of the telescopic rod (304), and a spring (305) is fixedly connected to the outer wall of the cutter (306).
5. The reactor for polyamide polymerization according to claim 4, wherein One end of the spring (305) away from the cutter (306) is fixedly connected to the inner wall of the sliding groove (303), and the telescopic rod (304) is located on the inner side of the spring (305).
6. The reactor for polyamide polymerization according to claim 5, wherein A fixed plate (307) is fixedly connected to the inner wall of the housing (302), a fixed shaft (308) is rotatably connected to the top of the fixed plate (307), and a rotating block (309) is fixedly connected to the outer wall of the fixed shaft (308).
7. The reactor for polyamide polymerization according to claim 6, wherein The rotating block (309) is located on the inner side of the cutter (306), and a belt pulley (310) is fixedly connected to the outer wall of the fixed shaft (308).
8. The reactor for polyamide polymerization according to claim 7, wherein A belt (311) is drivingly connected to the outer wall of the belt pulley (310), a belt pulley (312) is drivingly connected to one end of the belt (311) away from the belt pulley (310), and the inner wall of the belt pulley (312) is fixedly connected to the outer wall of the rotating shaft (203).