Polymerization production device for polyethylene glycol

Abstract

The polymerization production device comprises a reaction kettle body, the top of the reaction kettle body is sealed through a sealing top cover, a raw material pipe and a discharging pipe are connected to the sealing top cover and the bottom of the reaction kettle body respectively, and a sleeve extending into the reaction kettle body is rotationally connected to the sealing top cover; the top of the sleeve and the top of the rotating shaft achieve reverse rotation through a driving mechanism, the bottom of the rotating shaft extends out of the sleeve, a first connecting base is fastened to the end of the rotating shaft, the first connecting base is of a U-shaped structure with an upward opening, and a plurality of first vertical plates are vertically connected into the first connecting base. The upper end of the outer wall of the sleeve is fixedly connected with a second connecting base, the bottom of the second connecting base is vertically connected with a plurality of second vertical plates, and the second vertical plates and the first vertical plates are arranged in a staggered mode. Through reverse rotation of the first vertical plate and the second vertical plate, sufficient mixing of raw materials is guaranteed, and the raw material mixing efficiency and practicability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene glycol production, in particular to a polymerization production device for polyethylene glycol. Background Art

[0002] Polyethylene glycol is a high molecular polymer. It is formed by the gradual addition polymerization of ethylene oxide and water or ethylene glycol. It is non-irritating, slightly bitter, has good water solubility, and has good compatibility with many organic components. There are various synthesis methods, one of which is to add gasoline to a reactor, add a quantitative amount of aluminum isopropoxide as a catalyst under stirring, react, and transfer to a distillation kettle after the reaction is completed to obtain it.

[0003] In the existing polyethylene glycol polymerization production device, the polymerization reaction time of polyethylene glycol solution and catalyst is relatively long, and stirring is required during the reaction to improve the preparation efficiency. However, the stirring structure in the prior art is simple and single. At the same time, the polyethylene glycol solution and catalyst are easily attached to the inner wall of the mixing box, and it is not convenient to quickly unload the polymer. Therefore, we propose a polyethylene glycol polymerization production device. Summary of the invention

[0004] In view of the shortcomings of the existing prior art that the stirring structure is simple and single, the polyethylene glycol solution and the catalyst are easily attached to the inner wall of the mixing box, and it is inconvenient to unload the polymer, the present invention provides a polymerization production device for polyethylene glycol, which has the advantages of ensuring sufficient mixing of raw materials, improving the efficiency of raw material mixing, and ensuring rapid discharge of prepared products, thereby improving the practicality of the device and solving the problems raised in the above-mentioned background technology.

[0005] The technical solution of the present invention is achieved as follows: a polymerization production device for polyethylene glycol includes a reactor body, the top of the reactor body is sealed by a sealing top cover, and a raw material pipe and a discharge pipe are respectively connected to the sealing top cover and the bottom of the reactor body, a sleeve extending into the reactor body is rotatably connected to the sealing top cover, and a rotating shaft rotatably connected thereto is coaxially arranged in the sleeve, the top of the sleeve and the rotating shaft are rotated in the opposite direction by a driving mechanism, the sleeve extends from the bottom of the rotating shaft and a first connecting seat is fastened at the end, the first connecting seat is a U-shaped structure with an opening facing upward, a plurality of first vertical plates are vertically connected in the first connecting seat, the upper end of the outer wall of the sleeve is fixedly connected to the second connecting seat, the bottom of the second connecting seat is vertically connected to a plurality of second vertical plates, and the second vertical plates are staggered with the first vertical plates.

[0006] Optionally, a plurality of through holes are formed on the second vertical plate and the first vertical plate.

[0007] Optionally, arc-shaped scrapers that fit in the gap with the inner wall of the reaction kettle are connected to both ends of the first connecting seat.

[0008] Optionally, one side of the arc-shaped scraper is connected to two side plates, and the side wall of the first connecting seat is located between the two side plates and is fastened by bolts.

[0009] Optionally, the bottom of the rotating shaft is fixedly connected to the first support seat, the first connecting seat is fixedly connected to the first support seat, the outer wall of the sleeve is fixedly connected to the second support seat, and the second connecting seat is fixedly connected to the second support seat.

[0010] Optionally, the top of the rotating shaft is fixedly connected to the first motor connected to the top of the sealing top cover, and the second motor is connected to the top of the sealing top cover, the sleeve is rotatably connected to the sealing top cover through a bearing seat, and the outer wall of the sleeve is coaxially connected to the driven gear, the output end of the second motor is coaxially connected to the driving gear, and the driving gear is meshingly connected to the driven gear.

[0011] Optionally, a plurality of legs are connected to the bottom of the reactor body along the circumferential direction, and a control box is fixed to the legs via a mounting frame, a controller is connected to the control box, and the first motor and the second motor are connected to the controller.

[0012] Optionally, heating wires distributed in an S shape are fixed on the outer wall of the reactor body, and a heat preservation cover covering the heating wires is connected to the outer wall of the reactor body, a temperature sensor is fastened inside the heat preservation cover, and the heating wires and the temperature sensor are both connected to the controller.

[0013] Compared with the prior art, the present invention controls the first motor and the second motor to rotate, thereby driving the sleeve and the rotating shaft to rotate in the opposite direction, and then driving the first vertical plate and the second vertical plate to rotate in the opposite direction, thereby ensuring sufficient mixing of the raw materials and improving the efficiency of raw material mixing. After the rough finished product is obtained by reaction, with the assistance of the arc scraper, the prepared product can be quickly discharged through the discharge pipe, thereby effectively improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0017] Figure 3 It is a cross-sectional view of the present invention.

[0018] In the figure: 1. first motor; 2. sealing top cover; 3. driving gear; 4. raw material pipe; 5. second motor; 6. insulation cover; 7. control box; 8. mounting frame; 9. supporting leg; 10. discharge pipe; 11. reactor body; 12. first supporting seat; 13. first vertical plate; 14. first connecting seat; 15. second supporting seat; 16. second vertical plate; 17. sleeve; 18. second connecting seat; 19. through hole; 20. side plate; 21. driven gear; 22. heating wire; 23. arc scraper; 24. bearing seat; 25. rotating shaft; 26. temperature sensor. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 3 The present invention provides a technical solution: a polymerization production device for polyethylene glycol, comprising a reactor body 11, a plurality of legs 9 are connected to the bottom of the reactor body 11 along the circumferential direction, the top of the reactor body 11 is sealed by a sealing top cover 2, and a raw material pipe 4 and a discharge pipe 10 are respectively connected to the sealing top cover 2 and the bottom of the reactor body 11, a sleeve 17 extending into the reactor body 11 is rotatably connected to the sealing top cover 2, and a rotating shaft 25 rotatably connected to the sleeve 17 is coaxially arranged in the sleeve 17. When in use, in order to ensure the stable rotation of the rotating shaft 25, the rotating shaft 25 is connected to the sleeve 17 through a sealing bearing, which not only realizes the stable rotation of the rotating shaft 25 but also ensures the sealing performance of the connection between the two.

[0021] like Figure 2 As shown, when in use, in order to realize the reverse rotation of the sleeve 17 and the rotating shaft 25, the top of the rotating shaft 25 is fixedly connected to the first motor 1 connected to the top of the sealing top cover 2, and the second motor 5 is connected to the top of the sealing top cover 2, the sleeve 17 is rotatably connected to the sealing top cover 2 through the bearing seat 24, and the outer wall of the sleeve 17 is coaxially connected to the driven gear 21, the output end of the second motor 5 is coaxially connected to the driving gear 3, the driving gear 3 is meshed with the driven gear 21, and the second motor 5 rotates to drive the driving gear 3 and the driven gear 21 to rotate simultaneously, so that the sleeve 17 can be rotated on the sealing top cover 2, and the second motor 5 and the first motor 1 are controlled to rotate in the opposite direction, so that the reverse rotation setting of the sleeve 17 and the rotating shaft 25 can be realized.

[0022] like Figure 2 , 3As shown, a sleeve 17 extends from the bottom of the rotating shaft 25 and is fastened to the first connecting seat 14 at the end. In order to improve the stability of the installation of the first connecting seat 14, the first supporting seat 12 is fixedly connected to the bottom of the rotating shaft 25, and the first connecting seat 14 is fixedly connected to the first supporting seat 12, and the first connecting seat 14 is configured to be a U-shaped structure with an opening facing upward. In order to improve sufficient stirring, a plurality of first vertical plates 13 are vertically connected in the first connecting seat 14, and a second connecting seat 18 is fixedly connected to the upper end of the outer wall of the sleeve 17, and a second supporting seat 15 is fixedly connected to the outer wall of the second connecting seat 18. At the same time, The bottom of the connecting seat 18 is vertically connected to multiple second vertical plates 16, and the second vertical plates 16 are staggered with the first vertical plates 13. The staggered first vertical plates 13 and the second vertical plates 16 can simultaneously realize the reverse rotation of the first vertical plates 13 and the second vertical plates 16 under the drive of the reverse rotation of the sleeve 17 and the rotating shaft 25, so that the raw materials inside the reactor body 11 can be fully stirred. In order to further improve the sufficient mixing of the raw materials, multiple through holes 19 are opened on the second vertical plates 16 and the first vertical plates 13. The raw materials flow in the through holes 19, thereby realizing sufficient and rapid mixing of the raw materials.

[0023] like Figure 2 , 3 As shown, after the preparation is completed, in order to facilitate the effective removal of the prepared product, arc-shaped scrapers 23 that match the gap with the inner wall of the reactor body 11 are connected to both ends of the first connecting seat 14. The arc-shaped scraper 23 is driven by the rotation of the first connecting seat 14 to quickly scrape the inner wall of the reactor body 11. At the same time, the rotating arc-shaped scraper 23 can also stir the raw materials. In order to facilitate the installation and disassembly of the arc-shaped scraper 23, two side plates 20 are connected to one side of the arc-shaped scraper 23. The side wall of the first connecting seat 14 is located between the two side plates 20 and is fastened by bolts, which improves the practicability of the device.

[0024] In summary, when the polyethylene glycol polymerization production device is used, a heating wire 22 with an S-shaped distribution is fixed on the outer wall of the reaction kettle body 11, and a heat preservation cover 6 covering the heating wire 22 is connected to the outer wall of the reaction kettle body 11, a temperature sensor 26 is fastened in the heat preservation cover 6, and a control box 7 is fixed on the support leg 9 through a mounting frame 8, a controller is connected in the control box 7, and the first motor 1, the second motor 5, the heating wire 22, and the temperature sensor 26 are all connected to the controller;

[0025] During processing, the raw materials needed for preparation are discharged into the reactor body 11 through the raw material pipe 4, and the heating wire 22 is controlled to heat the reactor body 11 to ensure the temperature required for the reaction. At the same time, the first motor 1 and the second motor 5 are controlled to rotate, driving the sleeve 17 and the rotating shaft 25 to rotate in the opposite direction. At this time, the first vertical plate 13 and the second vertical plate 16 rotate in the opposite direction to ensure sufficient mixing of the raw materials. At the same time, under the dispersing effect of the through hole 19, the mixing efficiency can be further improved. After the reaction obtains a rough finished product, the rotating arc scraper 23 assists the raw materials to be discharged through the discharge pipe 10, which effectively improves the practicability of the device.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A polymerization production device for polyethylene glycol, comprising a reactor body (11), the top of the reactor body (11) is sealed by a sealing top cover (2), and a raw material pipe (4) and a discharge pipe (10) are connected to the sealing top cover (2) and the bottom of the reactor body (11), respectively, characterized in that: A sleeve (17) extending into the reactor body (11) is rotatably connected to the sealing top cover (2), and a rotating shaft (25) rotatably connected to the sleeve (17) is coaxially arranged inside the sleeve (17), and the tops of the sleeve (17) and the rotating shaft (25) are rotated in opposite directions through a driving mechanism; A sleeve (17) extends from the bottom of the rotating shaft (25) and is fastened to a first connecting seat (14) at the end thereof; the first connecting seat (14) is in a U-shaped structure with an opening facing upward; a plurality of first vertical plates (13) are vertically connected inside the first connecting seat (14); the upper end of the outer wall of the sleeve (17) is fixedly connected to a second connecting seat (18); a plurality of second vertical plates (16) are vertically connected to the bottom of the second connecting seat (18); and the second vertical plates (16) and the first vertical plates (13) are arranged in a staggered manner.

2. The polymerization production device for polyethylene glycol according to claim 1, characterized in that: A plurality of through holes (19) are provided on the second vertical plate (16) and the first vertical plate (13).

3. The polymerization production device for polyethylene glycol according to claim 1, characterized in that: Both ends of the first connecting seat (14) are connected with arc-shaped scrapers (23) that are gap-matched with the inner wall of the reaction kettle body (11).

4. The polymerization production device for polyethylene glycol according to claim 3, characterized in that: One side of the arc-shaped scraper (23) is connected to the two side plates (20), and the side wall of the first connecting seat (14) is located between the two side plates (20) and is fastened by bolts.

5. The polymerization production device for polyethylene glycol according to claim 1, characterized in that: The bottom of the rotating shaft (25) is fixedly connected to the first support seat (12), the first connecting seat (14) is fixedly connected to the first support seat (12), the outer wall of the sleeve (17) is fixedly connected to the second support seat (15), and the second connecting seat (18) is fixedly connected to the second support seat (15).

6. The polymerization production device for polyethylene glycol according to claims 1 to 5, characterized in that: The top of the rotating shaft (25) is fixedly connected to the first motor (1) connected to the top of the sealing top cover (2), and the top of the sealing top cover (2) is connected to the second motor (5). The sleeve (17) is rotatably connected to the sealing top cover (2) through a bearing seat (24), and the outer wall of the sleeve (17) is coaxially connected to a driven gear (21). The output end of the second motor (5) is coaxially connected to a driving gear (3), and the driving gear (3) is meshingly connected to the driven gear (21).

7. The polymerization production device for polyethylene glycol according to claim 6, characterized in that: The bottom of the reaction kettle body (11) is connected to a plurality of legs (9) along the circumferential direction, and a control box (7) is fixed on the legs (9) via a mounting frame (8), the control box (7) is connected to a controller, and the first motor (1) and the second motor (5) are connected to the controller.

8. The polymerization production device for polyethylene glycol according to claim 7, characterized in that: A heating wire (22) distributed in an S shape is fixed on the outer wall of the reaction kettle body (11), and a heat preservation cover (6) covering the heating wire (22) is connected to the outer wall of the reaction kettle body (11), a temperature sensor (26) is fastened inside the heat preservation cover (6), and the heating wire (22) and the temperature sensor (26) are both connected to a controller.

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