Polymerization reaction kettle for yellowing-resistant physical foaming PBT (Polybutylece Terephthalate) copolyester

Abstract

The utility model belongs to the technical field of polymerization reaction kettles, and particularly relates to an anti-yellowing physical foaming PBT copolyester polymerization reaction kettle which comprises a bottom plate, a plurality of supporting frames are symmetrically arranged at the top end of the bottom plate, the supporting frames are L-shaped, mounting rings are arranged at the top ends of transverse frames of the supporting frames, an outer kettle body is arranged in the mounting rings, and the outer kettle body is arranged in the bottom plate. An inner kettle body is arranged in the outer kettle body, a fixing rod is arranged at the top end of the bottom plate, a chassis is arranged at the top end of the fixing rod, a material mixing assembly is arranged in the inner kettle body and comprises a rotating shaft, the rotating shaft is sleeved with a plurality of shaft sleeves, and a plurality of material mixing rods are arranged on the outer side walls of the shaft sleeves in a surrounding mode; a plurality of scrapers are arranged on the top end surface of the chassis, and a plurality of stirring rods are arranged on the outer side walls of the scrapers in parallel, so that materials can be uniformly mixed, the heat of the device can be preserved, and the materials react under proper conditions.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of polymerization reactor, specifically is a kind of polymeric reaction kettle of anti-yellowing physical foaming PBT copolyester. BACKGROUND

[0002] Anti-yellowing physical foaming PBT copolyester is a kind of macromolecular material with excellent performance, and it is the main target of the research and development of anti-yellowing physical foaming PBT copolyester, which combines the excellent properties of PBT and physical foaming technology to improve the performance and application range of the material. In preparation, by introducing gas into the material to form tiny bubbles, the density of the material is reduced, and its heat insulation, sound insulation and cushioning performance are improved. Therefore, a polymeric reaction kettle for anti-yellowing physical foaming PBT copolyester is needed.

[0003] The polymeric reaction kettle for anti-yellowing physical foaming PBT copolyester is a reaction device for synthesizing macromolecular compounds, which usually includes a reaction kettle body, a stirring assembly, a heating assembly, a control assembly and an inlet and outlet assembly. The prepared raw materials and prepared foaming agent are respectively sent into the polymerization kettle, and the raw materials are fully stirred in the polymerization kettle to ensure uniform mixing of the reactants and initiate polymerization by adding an initiator to start the polymerization reaction.

[0004] The existing polymeric reaction kettle for anti-yellowing physical foaming PBT copolyester, due to the nature of the material itself, usually needs to reach a suitable temperature during reaction, and the reaction between materials needs to reach a certain contact area. The existing equipment is not mixed enough, and the equipment cannot be insulated, so the internal temperature cannot be kept constant at a suitable reaction condition. Therefore, a polymeric reaction kettle for anti-yellowing physical foaming PBT copolyester is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art, in view of the problems existing in the existing equipment, the utility model provides a polymeric reaction kettle for anti-yellowing physical foaming PBT copolyester.

[0006] The utility model discloses a kind of polymerization reactor of yellowing-resistant physical foaming PBT copolyester, including bottom plate, the top end of the bottom plate is symmetrically provided with multiple support frames, and the support frame is L-shaped, and the top end of multiple support frames is provided with mounting ring, outer kettle body is provided in the mounting ring, inner kettle body is provided in the outer kettle body, the top end of the bottom plate is provided with fixed rod, the top end of the fixed rod is provided with bottom disc, the top end of the bottom disc is provided with through hole, sealing ring is provided in the through hole, the fixed rod is set through sealing ring, and the bottom disc is located in inner kettle body, mixing assembly is provided in the inner kettle body, the outer wall of the inner kettle body is provided with rotating assembly, the mixing assembly includes rotating shaft, multiple shaft sleeves are sleeved on the rotating shaft, multiple mixing rods are arranged around the outer side wall of multiple shaft sleeves, the top end surface of the bottom disc is provided with multiple scrapers, multiple stirring rods are arranged side by side on the outer side wall of multiple scrapers, and cooperation reaches the mixing of PBT copolyester, so that it can quickly react.

[0007] Preferably, the inner wall of the mounting ring is provided with multiple rotating rods, the top end of the multiple rotating rods is provided with a pulley, the outer side wall of the outer kettle body is provided with a limiting ring, a limiting groove is formed in the limiting ring, and the pulley is located in the limiting groove.

[0008] Preferably, the top end of the outer kettle body is provided with a feeding port, the top end of the feeding port is provided with a feeding hopper, the inlet of the feeding hopper is located at the top end of the inner kettle body, the top end of the outer kettle body is provided with a driving motor, the output end of the driving motor is connected with the rotating shaft through a shaft coupling, and cooperation reaches the mixing of raw materials by the mixing rod.

[0009] Preferably, the bottom end of the bottom disc is provided with a discharge port, the discharge port penetrates through the outer kettle body, the top end of the discharge port is provided with a discharge pipe, and a discharge valve is arranged on the discharge pipe.

[0010] Preferably, the rotating assembly includes a fixed plate, the fixed plate is fixedly arranged on the outer side wall of one of the support frames, the top end of the fixed plate is provided with a rotating motor, the output end of the rotating motor is connected with a rotating shaft through a shaft coupling, the top end of the rotating shaft is provided with a gear, and cooperation reaches the rotation of the outer kettle body.

[0011] Preferably, the outer side wall of the outer kettle body is provided with a gear ring, the gear is located in multiple support frames, the gear ring is engaged with the gear, a cavity is arranged between the outer kettle body and the inner kettle body, and multiple heating strips are arranged on the top end surface of the bottom disc.

[0012] The utility model discloses a kind of polymerization reactor of yellowing-resistant physical foaming PBT copolyester, including bottom plate, the top end of the bottom plate is symmetrically provided with multiple support frames, and the support frame is L-shaped, and the top end of multiple support frames is provided with mounting ring, outer kettle body is provided in the mounting ring, inner kettle body is provided in the outer kettle body, the top end of the bottom plate is provided with fixed rod, the top end of the fixed rod is provided with bottom disc, the top end of the bottom disc is provided with through hole, sealing ring is provided in the through hole, the fixed rod is set through sealing ring, and the bottom disc is located in inner kettle body, mixing assembly is provided in the inner kettle body, the outer wall of the inner kettle body is provided with rotating assembly, the mixing assembly includes rotating shaft, multiple shaft sleeves are sleeved on the rotating shaft, multiple mixing rods are arranged around the outer side wall of multiple shaft sleeves, the top end surface of the bottom disc is provided with multiple scrapers, multiple stirring rods are arranged side by side on the outer side wall of multiple scrapers, and cooperation reaches the mixing of PBT copolyester, so that it can quickly react. The utility model discloses a kind of polymerization reactor of yellowing-resistant physical foaming PBT copolyester, including bottom plate, the top end of the bottom plate is symmetrically provided with multiple support frames, and the support frame is L-shaped, and the top end of multiple support frames is provided with mounting ring, outer kettle body is provided in the mounting ring, inner kettle body is provided in the outer kettle body, the top end of the bottom plate is provided with fixed rod, the top end of the fixed rod is provided with bottom disc, the top end of the bottom disc is provided with through hole, sealing ring is provided in the through hole, the fixed rod is set through sealing ring, and the bottom disc is located in inner kettle body, mixing assembly is provided in the inner kettle body, the outer wall of the inner kettle body is provided with rotating assembly, the mixing assembly includes rotating shaft, multiple shaft sleeves are sleeved on the rotating shaft, multiple mixing rods are arranged around the outer side wall of multiple shaft sleeves, the top end surface of the bottom disc is provided with multiple scrapers, multiple stirring rods are arranged side by side on the outer side wall of multiple scrapers, and cooperation reaches the mixing of PBT copolyester, so that it can quickly react.

[0013] 1. The utility model discloses a feeding hopper is set up, before operation, through the raw material and foaming agent of feeding into the feeding hopper, first starting drive motor, drive motor rotates, will drive the rotation of the rotating shaft, the rotating shaft rotates and mixes the raw material with the stirring rod, can increase the reaction contact area between materials, and start heating strip, heat the equipment, make the equipment reach the suitable reaction condition, start the rotating motor again, and the rotating motor drives the gear and the gear ring to engage, cooperate and drive the outer kettle body and the inner kettle body to rotate, the inner kettle body rotates, and the scraper is arranged at the top of the chassis, and the scraper will scrape the raw material on the inner wall of the inner kettle body, and the cooperation reaches the relative rotation of the material around the rotating shaft, and the revolution under the action of the outer kettle body, and the cooperation improves the mixing uniformity of the device, and improves the working efficiency of the device.

[0014] 2. The utility model discloses a kettle body is set up, through heating the inside of the inner kettle body, makes it reach the suitable reaction temperature, through the cavity between the inner kettle body and the outer kettle body, cooperation reaches the heat preservation of the inner kettle body, cooperation reaches the internal temperature of the inner kettle body constant and keeps under the suitable reaction condition, makes the reaction carry out more thoroughly, improves the practicality of the device. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings explained here are used to provide further understanding of the utility model, and constitute a part of this application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model. In the drawings:

[0016] Figure 1 It is the first whole three-dimensional structure schematic diagram;

[0017] Figure 2 It is the outer kettle body installation structure schematic diagram;

[0018] Figure 3 It is the outer kettle body cut structure schematic diagram;

[0019] Figure 4 It is the inner kettle body cut structure schematic diagram;

[0020] Figure 5 It is the limit ring installation structure schematic diagram;

[0021] LEGEND:

[0022] In the figure: 1, bottom plate; 10, heating strip; 11, support frame; 12, outer kettle body; 13, rotating shaft; 14, driving motor; 15, feeding hopper; 16, inner kettle body; 17, shaft sleeve; 18, mixing rod; 19, scraper; 20, fixed rod; 2, fixed plate; 21, rotating motor; 22, gear; 23, gear ring; 24, mounting ring; 25, limiting ring; 26, pulley; 27, discharge pipe; 28, bottom disc. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-5 As shown in the figure, a kind of polymerization reactor of yellowing-resistant physical foaming PBT copolyester includes bottom plate 1, the top of the bottom plate 1 is symmetrically provided with a plurality of support frames 11, and the support frame 11 is L-shaped, and the top of a plurality of support frames 11 is provided with mounting ring 24, outer kettle body 12 is arranged in mounting ring 24, inner kettle body 16 is arranged in outer kettle body 12, the top of the bottom plate 1 is provided with fixed rod 20, the top of the fixed rod 20 is provided with bottom disc 28, the top of the bottom disc 28 is provided with through hole, sealing ring is arranged in through hole, the fixed rod 20 is arranged through sealing ring, and the bottom disc 28 is located in inner kettle body 16, mixing assembly is arranged in inner kettle body 16, rotating assembly is arranged on the outer wall of the inner kettle body 16, the mixing assembly includes rotating shaft 13, a plurality of shaft sleeves 17 are sleeved on the rotating shaft 13, a plurality of mixing rods 18 are arranged around the outer side wall of a plurality of shaft sleeves 17, a plurality of scrapers 19 are arranged on the top surface of the bottom disc 28, and a plurality of stirring rods are arranged on the outer side wall of a plurality of scrapers 19.

[0025] In the work, a kind of physical foaming PBT copolyester yellowing resistant polymerization reactor of existing, due to the nature of material itself, it is usually required to reach suitable temperature when reacting, and the contact area between materials needs to reach a certain amount of reaction, the mixing of existing equipment is not uniform enough, in the scheme, the utility model discloses by setting feeding hopper 15, before operation, by feeding raw materials and blowing agent into feeding hopper 15, first start drive motor 14, when drive motor 14 rotates, it will drive rotating shaft 13 to rotate, rotating shaft 13 rotation will mix raw materials with stirring rod 18, can increase the reaction contact area between materials, and start heating strip 10, the equipment is heated, so that the equipment reaches suitable reaction condition, then start rotating motor 21, rotating motor 21 drives gear 22 and gear ring 23 to engage, and drive outer kettle body 12 and inner kettle body 16 to rotate, inner kettle body 16 rotates, and scraper 19 is arranged at the top of bottom plate 28, scraper 19 will scrape the raw materials on the inner wall of inner kettle body 16, improve the mixing uniformity of device, improve the working efficiency of device.

[0026] The inner wall of the mounting ring 24 is provided with a plurality of rotating rods, the top end of each of the plurality of rotating rods is provided with a pulley 26, the outer side wall of the outer kettle body 12 is provided with a limiting ring 25, a limiting groove is formed in the limiting ring 25, the pulley 26 is located in the limiting groove, a feeding port is formed at the top end of the outer kettle body 12, and a feeding hopper 15 is arranged at the top end of the feeding port, and the inlet of the feeding hopper 15 is located at the top end of the inner kettle body 16, a drive motor 14 is arranged at the top end of the outer kettle body 12, the output end of the drive motor 14 is connected with a rotating shaft 13 through a shaft coupling, a discharge port is formed at the bottom end of the bottom plate 28, and the discharge port penetrates through the outer kettle body 12, a discharge pipe 27 is arranged at the top end of the discharge port, a discharge valve is arranged on the discharge pipe 27, the rotating assembly comprises a fixed plate 2, the fixed plate 2 is fixedly arranged at the outer side wall of one of the supporting frames 11, a rotating motor 21 is arranged at the top end of the fixed plate 2, a rotating shaft is connected to the output end of the rotating motor 21 through a shaft coupling, a gear 22 is arranged at the top end of the rotating shaft, a gear ring 23 is arranged at the outer side wall of the outer kettle body 12, and the gear 22 is located in the plurality of supporting frames 11, the gear ring 23 is engaged with the gear 22, a cavity is arranged between the outer kettle body 12 and the inner kettle body 16, and a plurality of heating strips 10 are arranged on the top surface of the bottom plate 28.

[0027] In work, the existing physical foaming PBT copolyester polymerization reactor, the equipment cannot be heat preservation, cannot make the internal temperature constant keep in the suitable reaction condition, and in the scheme, the utility model through setting inner kettle body 16, through heating to inner kettle body 16 inside, make it reach suitable reaction temperature, through the cavity that is provided between inner kettle body 16 and outer kettle body 12, cooperate reaches can the heat preservation of inner kettle body 16, cooperate reaches can make the internal temperature of inner kettle body 16 constant keep in the suitable reaction condition, make the reaction carry out more thoroughly, improve the practicality of device.

[0028] Working principle: the existing physical foaming PBT copolyester polymerization reactor, due to the nature of the material itself, it usually needs to reach the appropriate temperature during reaction, and the reaction between materials needs to reach a certain contact area, the existing equipment is not uniform enough, in the scheme, the utility model through setting hopper 15, before operation, by feeding raw materials and blowing agent into hopper 15, first start drive motor 14, drive motor 14 rotates, will drive rotating shaft 13 to rotate, rotating shaft 13 rotates will mix the raw materials with stirring rod 18, which can increase the reaction contact area between materials, and start heating strip 10 to heat the equipment, so that the equipment reaches the suitable reaction condition, then start rotating motor 21, rotating motor 21 drives gear 22 to mesh with gear ring 23, which drives outer kettle body 12 and inner kettle body 16 to rotate, inner kettle body 16 rotates, the top of bottom plate 28 is provided with scraper 19, which will scrape off the raw materials on the inner wall of inner kettle body 16, which improves the mixing uniformity of the device and improves the working efficiency of the device.

[0029] In the scheme, the utility model through setting inner kettle body 16, through heating to inner kettle body 16 inside, make it reach suitable reaction temperature, through the cavity that is provided between inner kettle body 16 and outer kettle body 12, cooperate reaches can the heat preservation of inner kettle body 16, cooperate reaches can make the internal temperature of inner kettle body 16 constant keep in the suitable reaction condition, make the reaction carry out more thoroughly, improve the practicality of device.

[0030] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, 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.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A polymerization reactor for a yellowing-resistant, physically foamed PBT copolyester, characterized by: The utility model provides a kind of mixing kettle, including bottom plate (1), the top end of the bottom plate (1) is symmetrically provided with multiple support frames (11), and the support frame (11) is L-shaped, and the top end of multiple support frames (11) is provided with mounting ring (24), outer kettle body (12) is provided in mounting ring (24), inner kettle body (16) is provided in outer kettle body (12), the top end of the bottom plate (1) is provided with fixed rod (20), the top end of the fixed rod (20) is provided with bottom disc (28), the top end of the bottom disc (28) is provided with through hole, sealing ring is provided in the through hole, the fixed rod (20) is provided through sealing ring, and the bottom disc (28) is located in inner kettle body (16), mixing assembly is provided in the inner kettle body (16), the outer wall of the inner kettle body (16) is provided with rotating assembly, the mixing assembly includes rotating shaft (13), multiple shaft sleeves (17) are sleeved on the rotating shaft (13), multiple mixing rods (18) are provided around the outer side wall of multiple shaft sleeves (17), the top end surface of the bottom disc (28) is provided with multiple scrapers (19), and multiple stirring rods are provided on the outer side wall of multiple scrapers (19).

2. The polymerization reactor for the yellowing-resistant, physically-foamed PBT copolyester according to claim 1, characterized in that: The inner wall of the mounting ring (24) is provided with multiple rotating rods, the top end of the multiple rotating rods is provided with a pulley (26), the outer side wall of the outer kettle body (12) is provided with a limiting ring (25), the limiting ring (25) is provided with a limiting groove, and the pulley (26) is located in the limiting groove.

3. The polymerization reactor of the yellowing-resistant, physically foamed PBT copolyester according to claim 2, characterized in that: The top end of the outer kettle body (12) is provided with a feeding port, and the top end of the feeding port is provided with a feeding hopper (15), and the inlet of the feeding hopper (15) is located at the top end of the inner kettle body (16), the top end of the outer kettle body (12) is provided with a driving motor (14), and the output end of the driving motor (14) is connected with the rotating shaft (13) through a shaft coupling.

4. The polymerization reactor of the yellowing-resistant, physically-foamed PBT copolyester of claim 3, wherein: The bottom end of the bottom disc (28) is provided with a discharge port, and the discharge port is provided through the outer kettle body (12), the top end of the discharge port is provided with a discharge pipe (27), and the discharge pipe (27) is provided with a discharge valve.

5. The polymerization reactor for the production of a yellowing resistant, physically foamed PBT copolyester according to claim 4, characterized in that: The rotating assembly includes a fixed plate (2), the fixed plate (2) is fixedly arranged on the outer side wall of one of the support frames (11), the top end of the fixed plate (2) is provided with a rotating motor (21), the output end of the rotating motor (21) is connected with a rotating shaft through a shaft coupling, and the top end of the rotating shaft is provided with a gear (22).

6. The polymerization reactor of the yellowing resistant, physically foamed PBT copolyester according to claim 5, characterized in that: The outer side wall of the outer kettle body (12) is provided with a gear ring (23), and the gear (22) is located in multiple support frames (11), the gear ring (23) is engaged with the gear (22), a cavity is provided between the outer kettle body (12) and the inner kettle body (16), and the top end surface of the bottom disc (28) is provided with multiple heating strips (10).

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