A polyester melt polymerization device

Abstract

The utility model discloses a kind of polyester melt polymerization devices, it is related to chemical fiber manufacturing technical field, including fixed base plate and storage assembly, the left end of fixed base plate upper surface is equipped with support frame, the upper side of support frame is set to storage assembly, and storage assembly includes raw material tank, powder cavity, first motor, powder stirring paddle, gear type powder metering pump, solution cavity, second motor, solution stirring paddle, numerical control metering pump, make-up port and sealing plug, the upper side of support frame is set to raw material tank.The polyester melt polymerization device, by storage assembly, so that the device can realize the storage and pre-stirring of raw materials, effectively prevent raw material caking or solidification, quantitative feeding can also be carried out, the proportion of raw materials is accurately controlled, so as to improve production efficiency, improve production quality, by dismounting component, so that the device can be quickly disassembled to filter mechanism, so as to clean it, to ensure its filtering effect.

Description

Technical Field

[0001] This utility model relates to the field of chemical fiber manufacturing technology, specifically to a polyester melt polymerization device. Background Technology

[0002] Polyester melt is a viscous fluid formed by melting polyethylene terephthalate (PTA) at high temperatures. It can be directly used for spinning or injection molding and is a core intermediate product in polyester fiber production. It is produced by polycondensation of PTA and ethylene glycol in a polymerization unit, exhibiting high crystallinity and excellent fiber-forming properties. Currently, in order to efficiently convert purified terephthalic acid (PTA) and ethylene glycol into polyester melt and ensure uniform molecular chain growth and reaction stability, a polymerization unit is typically required.

[0003] Polymerization equipment on the market usually lacks raw material storage and processing facilities, making it difficult to accurately measure and transport raw materials, which can easily lead to inaccurate raw material ratios and thus affect product quality. To address this, we propose a polyester melt polymerization device. Utility Model Content

[0004] The purpose of this invention is to provide a polyester melt polymerization apparatus to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polyester melt polymerization device, comprising a fixed base plate and a storage assembly. A support frame is installed on the left end of the upper surface of the fixed base plate. The storage assembly is located on the upper side of the support frame and includes a raw material tank, a powder chamber, a first motor, a powder stirring paddle, a gear-type powder metering pump, a solution chamber, a second motor, a solution stirring paddle, a CNC metering pump, a feed port, and a sealing plug. The raw material tank is located on the upper side of the support frame, and a powder chamber is opened on the left side inside the raw material tank. A first motor is installed on the upper side of the powder chamber, and the output end of the first motor is connected to the powder stirring paddle through a coupling. A gear-type powder metering pump is located on the lower side of the powder chamber.

[0006] Furthermore, a solution chamber is provided at the right end of the raw material tank, and a second motor is installed on the upper side of the solution chamber. The output end of the second motor is connected to a solution stirring paddle through a coupling, and a CNC metering pump is installed on the lower side of the solution chamber.

[0007] Furthermore, the raw material tank is symmetrically provided with feeding ports on the upper side, and a sealing plug is engaged with the upper inner side of the feeding port.

[0008] Furthermore, an esterification reactor is installed on the left front side of the upper surface of the fixed base plate, and the esterification reactor has a built-in stirring vessel and a heating jacket. The upper side of the esterification reactor is connected to a gear-type powder metering pump and a CNC metering pump.

[0009] Furthermore, a discharge pipe is connected to the lower side of the esterification reactor, and a first melt booster gear pump is provided at the right end of the discharge pipe. A high-pressure delivery pipe is connected to the right end of the first melt booster gear pump.

[0010] Furthermore, a polycondensation reactor is provided at the upper end of the high-pressure conveying pipe, and a discharge pipe is connected to the lower side of the polycondensation reactor. A second melt booster gear pump is installed at the rear end of the discharge pipe, and a high-pressure connecting pipe is installed at the rear end of the second melt booster gear pump.

[0011] Furthermore, a melt filter can is installed on the upper side of the high-pressure connecting pipe, and the surface of the melt filter can is provided with a disassembly and assembly component for easy disassembly and assembly. The disassembly and assembly component includes a fixing plate, a sealing gasket, and a snap-fit ​​groove. The fixing plate is located on both sides of the upper end of the melt filter can. A sealing gasket is connected to the front surface of the upper end of the melt filter can, and a snap-fit ​​groove is opened on the front side of the upper end of the melt filter can.

[0012] Furthermore, the assembly and disassembly components also include a snap-fit ​​strip, a sealing front cover, a movable plate, fixing bolts, a filter element, and a discharge valve. The snap-fit ​​strip is snapped into the inner side of the snap-fit ​​groove. A sealing front cover is installed on the front side of the snap-fit ​​strip, and movable plates are provided on both sides of the sealing front cover. Fixing bolts are threaded onto the surface of the movable plates. A filter element is installed inside the melt filter tank, and a discharge valve is provided on the lower side of the melt filter tank.

[0013] This utility model provides a polyester melt polymerization apparatus, which has the following beneficial effects:

[0014] 1. This utility model, by setting up a material storage assembly, includes a raw material tank, a powder chamber, a first motor, a powder stirring paddle, a gear-type powder metering pump, a solution chamber, a second motor, a solution stirring paddle, a CNC metering pump, a feeding port, and a sealing plug. In use, purified terephthalic acid powder and ethylene glycol solution are added to the powder chamber and solution chamber respectively through the feeding port. The first motor is started, causing the powder stirring paddle to rotate, continuously stirring the powder to prevent clumping. Simultaneously, the second motor is started, causing the solution stirring paddle to rotate, continuously stirring the solution to prevent precipitation and solidification. The gear-type powder metering pump quantitatively delivers terephthalic acid powder to the esterification reactor, and the CNC metering pump quantitatively delivers ethylene glycol solution to the esterification reactor. This allows the device to store and pre-stir raw materials, effectively preventing clumping or solidification, and enabling quantitative feeding and precise control of raw material ratios, thereby improving production efficiency and quality.

[0015] 2. This utility model incorporates a disassembly and assembly component, including a fixed plate, a sealing gasket, and a snap-fit ​​groove. The component also includes a snap-fit ​​strip, a sealing front cover, a movable plate, fixing bolts, a filter element, and a discharge valve. During use, the filter element removes impurities, carbides, and gel particles from the melt, ensuring the purity of the spinning melt, preventing spinneret clogging, and improving fiber quality. The sealing front cover can be removed for easy cleaning of the inside of the melt filter tank and the filter element. The sealing front cover is installed on the melt filter tank via the snap-fit ​​strip and the snap-fit ​​groove. The sealing gasket enhances the sealing and tightness of the connection between the sealing front cover and the melt filter tank. The fixing bolts secure the movable plate to the fixed plate, further improving the stability of the installation of the sealing front cover and the melt filter tank. This allows for quick disassembly and assembly of the filtration mechanism for easy cleaning, ensuring optimal filtration performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a polyester melt polymerization device according to the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the material storage component of a polyester melt polymerization device according to the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the esterification reactor of a polyester melt polymerization apparatus according to the present invention;

[0019] Figure 4 This is a three-dimensional structural diagram of the disassembly and assembly components of a polyester melt polymerization device according to the present invention.

[0020] In the diagram: 1. Fixed base plate; 2. Support frame; 3. Material storage assembly; 301. Raw material tank; 302. Powder chamber; 303. First motor; 304. Powder stirring paddle; 305. Gear-type powder metering pump; 306. Solution chamber; 307. Second motor; 308. Solution stirring paddle; 309. CNC metering pump; 310. Feed inlet; 311. Sealing plug; 4. Esterification reactor; 5. Discharge pipe; 6. First melt pressurization unit. 7. Gear pump; 8. High-pressure conveying pipe; 9. Polycondensation reactor; 10. Discharge pipe; 11. Second melt booster gear pump; 12. High-pressure connecting pipe; 13. Melt filter tank; 14. Assembly / disassembly assembly; 15. Fixing plate; 16. Sealing gasket; 17. Snap-fit ​​groove; 18. Snap-fit ​​strip; 19. Sealing front cover; 10. Movable plate; 10. Fixing bolt; 11. Filter element; 12. Discharge valve. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] like Figures 1 to 4 As shown, a polyester melt polymerization apparatus includes a fixed base plate 1 and a storage assembly 3. A support frame 2 is installed on the left end of the upper surface of the fixed base plate 1. The storage assembly 3 is located on the upper side of the support frame 2 and includes a raw material tank 301, a powder chamber 302, a first motor 303, a powder stirring paddle 304, a gear-type powder metering pump 305, a solution chamber 306, a second motor 307, a solution stirring paddle 308, a CNC metering pump 309, a feed port 310, and a sealing plug 311. The raw material tank 301 is located on the upper side of the support frame 2, and the powder chamber 302 is opened on the left side inside the raw material tank 301. A first motor 303 is installed on the upper side of the cavity 302, and the output end of the first motor 303 is connected to a powder stirring paddle 304 via a coupling. A gear-type powder metering pump 305 is installed on the lower side of the powder cavity 302. A solution cavity 306 is opened at the right end inside the raw material tank 301, and a second motor 307 is installed on the upper side of the solution cavity 306. The output end of the second motor 307 is connected to a solution stirring paddle 308 via a coupling. A CNC metering pump 309 is installed on the lower side of the solution cavity 306. A feed port 310 is symmetrically arranged on the upper side of the raw material tank 301, and a sealing plug 311 is engaged with the upper end of the inner side of the feed port 310.

[0023] The specific operation is as follows: During use, purified terephthalic acid powder and ethylene glycol solution are added to the powder chamber 302 and solution chamber 306 respectively through the feeding port 310. The first motor 303 is started, which drives the powder stirring paddle 304 to rotate. The powder stirring paddle 304 continuously stirs the powder to prevent it from clumping. At the same time, the second motor 307 is started, which drives the solution stirring paddle 308 to rotate. The solution stirring paddle 308 continuously stirs the solution to prevent it from settling and solidifying. The terephthalic acid powder is quantitatively delivered to the esterification reactor 4 through the gear-type powder metering pump 305, and the ethylene glycol solution is quantitatively delivered to the esterification reactor 4 through the CNC metering pump 309.

[0024] Please refer to Figures 3 to 4An esterification reactor 4 is connected to a discharge pipe 5 at its lower side, and a first melt booster gear pump 6 is installed at the right end of the discharge pipe 5. A high-pressure conveying pipe 7 is connected to the right end of the first melt booster gear pump 6. A polycondensation reactor 8 is installed at the upper end of the high-pressure conveying pipe 7, and a discharge pipe 9 is connected to the lower side of the polycondensation reactor 8. A second melt booster gear pump 10 is installed at the rear end of the discharge pipe 9, and a high-pressure connecting pipe 11 is installed at the rear end of the second melt booster gear pump 10. A melt filter tank 12 is installed on the upper side of the high-pressure connecting pipe 11, and a disassembly assembly 13 for easy disassembly is provided on the surface of the melt filter tank 12. The disassembly assembly 13 includes a fixing plate 1301, a sealing gasket 1302, and a snap-fit ​​groove 1303, and the fixing plate 1301 is provided on the melt filter tank 12. On both sides of the melt filter tank 12, a sealing gasket 1302 is connected to the front surface of the upper end, and a snap-fit ​​groove 1303 is opened on the front side of the upper end of the melt filter tank 12. The disassembly and assembly assembly 13 also includes a snap-fit ​​strip 1304, a sealing front cover 1305, a movable plate 1306, a fixing bolt 1307, a filter element 1308, and a discharge valve 1309. The snap-fit ​​strip 1304 is snapped into the inner side of the snap-fit ​​groove 1303. The sealing front cover 1305 is installed on the front side of the snap-fit ​​strip 1304. Movable plates 1306 are provided on both sides of the sealing front cover 1305. The surface of the movable plate 1306 is threaded with fixing bolts 1307. The filter element 1308 is installed inside the melt filter tank 12, and a discharge valve 1309 is provided on the lower side of the melt filter tank 12.

[0025] The specific operation is as follows: During use, phthalic acid powder and ethylene glycol solution undergo an esterification reaction in esterification reactor 4, generating oligomers which are then discharged through discharge pipe 5. The first melt booster gear pump 6 then transports the material to the polycondensation reactor 8 through high-pressure conveying pipe 7. In the polycondensation reactor 8, the byproduct ethylene glycol small molecules are gradually removed through a vacuum system, increasing the intrinsic viscosity of the polymer and ultimately forming a polyester melt that can be directly spun. The polyester melt is discharged through discharge pipe 9, and the second melt booster gear pump 10 then transports it to the melt filter tank 12 through high-pressure connecting pipe 11. After filtration by filter element 1308, impurities, carbides, and gel particles in the melt are removed, ensuring the spinning melt. To ensure purity, prevent spinneret clogging, and improve fiber quality, the melt is discharged through the discharge valve 1309. After filtration, the sealing front cover 1305 can be removed to facilitate cleaning of the inside of the melt filter tank 12 and the filter element 1308. The sealing front cover 1305 is installed on the melt filter tank 12 by the snap-fit ​​connection between the snap-fit ​​strip 1304 and the snap-fit ​​groove 1303. The sealing gasket 1302 enhances the sealing and tightness of the connection between the sealing front cover 1305 and the melt filter tank 12. The movable plate 1306 and the fixed plate 1301 are fixed together by the fixing bolts 1307 to further improve the stability of the installation of the sealing front cover 1305 and the melt filter tank 12.

[0026] In summary, as Figures 1 to 4As shown, in operation, the polyester melt polymerization apparatus first introduces purified terephthalic acid powder and ethylene glycol solution into the powder chamber 302 and solution chamber 306 respectively through the feed port 310. Then, the first motor 303 is started, driving the powder stirring paddle 304 to rotate, continuously stirring the powder to prevent clumping. Simultaneously, the second motor 307 is started, driving the solution stirring paddle 308 to rotate, continuously stirring the solution. Stirring is used to prevent the solution from settling and solidifying. Phthalic acid powder is quantitatively delivered to the esterification reactor 4 via a gear-type powder metering pump 305, while ethylene glycol solution is quantitatively delivered to the esterification reactor 4 via a numerically controlled metering pump 309. Subsequently, the phthalic acid powder and ethylene glycol solution undergo an esterification reaction in the esterification reactor 4, generating oligomers which are then discharged through the discharge pipe 5. The first melt booster gear pump 6 then delivers the material to the polycondensation reactor 8 via a high-pressure conveying pipe 7. In the polycondensation reactor 8, byproducts are gradually removed through a vacuum system. The product, ethylene glycol small molecules, increases the intrinsic viscosity of the polymer, ultimately forming a polyester melt that can be directly spun. The polyester melt is discharged through discharge pipe 9, and then transported by a second melt booster gear pump 10 through a high-pressure connecting pipe 11 to a melt filter tank 12. After filtration by filter element 1308, impurities, carbides, and gel particles in the melt are removed, ensuring the purity of the spinning melt, preventing spinneret clogging, and improving fiber quality. The melt is discharged through discharge valve 1309. After filtration, the sealing front cover 1305 can be removed. To facilitate cleaning of the interior of the melt filter tank 12 and the filter element 1308, the sealing front cover 1305 is installed on the melt filter tank 12 by engaging the snap-fit ​​strip 1304 with the snap-fit ​​groove 1303. The sealing gasket 1302 enhances the sealing and tightness of the connection between the sealing front cover 1305 and the melt filter tank 12. The movable plate 1306 is fixed to the fixed plate 1301 by the fixing bolts 1307, further improving the stability of the installation of the sealing front cover 1305 and the melt filter tank 12.

[0027] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A polyester melt polymerization apparatus, comprising a fixed base plate (1) and a material storage assembly (3), characterized in that: A support frame (2) is installed on the left end of the upper surface of the fixed base plate (1). The storage assembly (3) is located on the upper side of the support frame (2). The storage assembly (3) includes a raw material tank (301), a powder chamber (302), a first motor (303), a powder stirring paddle (304), a gear-type powder metering pump (305), a solution chamber (306), a second motor (307), a solution stirring paddle (308), a CNC metering pump (309), and a feeding mechanism. The raw material tank (301) is located on the upper side of the support frame (2), and a powder chamber (302) is opened on the left side inside the raw material tank (301). A first motor (303) is installed on the upper side of the powder chamber (302), and the output end of the first motor (303) is connected to a powder stirring paddle (304) through a coupling. A gear-type powder metering pump (305) is installed on the lower side of the powder chamber (302).

2. The polyester melt polymerization apparatus according to claim 1, characterized in that, The raw material tank (301) has a solution chamber (306) at the right end, and a second motor (307) is installed on the upper side of the solution chamber (306). The output end of the second motor (307) is connected to a solution stirring paddle (308) through a coupling. A CNC metering pump (309) is installed on the lower side of the solution chamber (306).

3. The polyester melt polymerization apparatus according to claim 1, characterized in that, The raw material tank (301) is symmetrically provided with a feeding port (310) on the upper side, and a sealing plug (311) is engaged and connected to the upper inner side of the feeding port (310).

4. The polyester melt polymerization apparatus according to claim 1, characterized in that, An esterification reactor (4) is installed on the left front side of the upper surface of the fixed base plate (1), and the esterification reactor (4) has a built-in stirring vessel and a heating jacket. The upper side of the esterification reactor (4) is connected to a gear-type powder metering pump (305) and a CNC metering pump (309).

5. The polyester melt polymerization apparatus according to claim 4, characterized in that, The esterification reactor (4) is connected to a discharge pipe (5) on its lower side, and a first melt booster gear pump (6) is provided at the right end of the discharge pipe (5), and a high-pressure delivery pipe (7) is connected at the right end of the first melt booster gear pump (6).

6. The polyester melt polymerization apparatus according to claim 5, characterized in that, The high-pressure conveying pipe (7) is equipped with a polycondensation reactor (8) at its upper end, and a discharge pipe (9) is connected to the lower side of the polycondensation reactor (8). A second melt booster gear pump (10) is installed at the rear end of the discharge pipe (9), and a high-pressure connecting pipe (11) is installed at the rear end of the second melt booster gear pump (10).

7. The polyester melt polymerization apparatus according to claim 6, characterized in that, A melt filter tank (12) is installed on the upper side of the high-pressure connecting pipe (11), and a disassembly assembly (13) for easy disassembly is provided on the surface of the melt filter tank (12). The disassembly assembly (13) includes a fixing plate (1301), a sealing gasket (1302) and a snap-fit ​​groove (1303). The fixing plate (1301) is located on both sides of the upper end of the melt filter tank (12). The sealing gasket (1302) is connected to the front surface of the upper end of the melt filter tank (12), and a snap-fit ​​groove (1303) is opened on the front side of the upper end of the melt filter tank (12).

8. A polyester melt polymerization apparatus according to claim 7, characterized in that, The disassembly and assembly assembly (13) also includes a snap-fit ​​strip (1304), a sealing front cover (1305), a movable plate (1306), a fixing bolt (1307), a filter element (1308), and a discharge valve (1309). The snap-fit ​​strip (1304) is snapped into the inner side of the snap-fit ​​groove (1303). The sealing front cover (1305) is installed on the front side of the snap-fit ​​strip (1304). Movable plates (1306) are provided on both sides of the sealing front cover (1305). The surface of the movable plate (1306) is threaded with fixing bolts (1307). The filter element (1308) is installed inside the melt filter tank (12). The discharge valve (1309) is provided on the lower side of the melt filter tank (12).

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