CN211863955U

CN211863955U - Falling strip type devolatilizer with good heat preservation effect for polystyrene production

Info

Publication number: CN211863955U
Application number: CN202020299087.8U
Authority: CN
Inventors: 王亮; 梁学兵
Original assignee: Hebei Baosheng New Materials Co ltd
Current assignee: Hebei Baosheng New Materials Co ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-11-06
Anticipated expiration: 2030-03-12

Abstract

The utility model discloses a falling strip type devolatilization device with good heat preservation effect for polystyrene production, which comprises an installation base, wherein the edge part of the top end of the installation base is fixedly connected with a sealing barrel, the top end of the installation base is fixedly connected with a devolatilization device main body corresponding to the inner side position of the sealing barrel, the middle part of the top end of the devolatilization device main body is fixedly connected with an installation plate, the heating barrel is installed at the top part of the inner side of the devolatilization device main body through the matching between the installation plate and the installation column, the heating barrel is not directly contacted with the top part of the devolatilization device main body under the action of the installation column, heat conducting oil in the heating barrel is heated through an electric heating tube before the devolatilization device works normally, the speed of the temperature reduction in the devolatilization device main body is reduced through a vacuum cavity, simultaneously, the heat of the heat conducting oil in the heating barrel is diffused outwards, so that the, the phenomenon that the temperature in the devolatilization device suddenly drops after the boiler fails is prevented, and the product quality of the polystyrene is improved.

Description

Falling strip type devolatilizer with good heat preservation effect for polystyrene production

Technical Field

The utility model relates to a polystyrene production facility technical field specifically is a polystyrene production is with effectual falling strip formula of keeping warm and taking off ware.

Background

At present, the production of polystyrene comprises a plurality of steps such as prepolymerization, polymerization, devolatilization and the like, wherein the devolatilization step is to instantaneously remove unreacted styrene monomers and other small molecular organic solvents such as ethylbenzene and the like in molten polystyrene at high temperature, an important parameter for measuring the quality of polystyrene products is the content of residual styrene monomers in the products, a direct procedure influencing the index is the devolatilization treatment step in production, a devolatilization device used in the devolatilization step heats heat-conducting oil through a boiler, and then heats polymers in the devolatilization device to realize devolatilization;

however, the falling strip type devolatilization device in the current market is lack of a corresponding heat preservation mechanism, when a heating boiler breaks down, the temperature of heat conduction oil can drop suddenly, so that the temperature inside the devolatilization device drops sharply, and unreacted monomers of a product cannot be volatilized in time, so that the content of styrene monomers in polystyrene is increased, and the product quality of the polystyrene is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a polystyrene production is with effectual falling strip formula devolatilization ware that keeps warm, can effectively solve the falling strip formula devolatilization ware that proposes in the above-mentioned background art owing to lack corresponding heat preservation mechanism, when heating boiler breaks down, the temperature of conduction oil can the abrupt drop, and then lead to taking off the inside temperature of devolatilization ware and sharply descend to cause the monomer that the product does not react to volatilize away in time, cause styrene monomer content to increase in the polystyrene, the problem of polystyrene's product quality has been reduced.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polystyrene production is with effectual falling strip formula devolatilization ware that keeps warm, includes the installation base, installation base top limit portion fixedly connected with sealed bucket, the installation base top corresponds the inboard fixedly connected with of position department of sealed bucket and devolatilizes the ware main part, devolatilize ware main part one side fixedly connected with inlet pipe, one section fixedly connected with pre-heater of inlet pipe, one section fixedly connected with ring pipe in addition of inlet pipe, the ring pipe bottom evenly is provided with the discharge gate, devolatilize ware main part opposite side fixedly connected with outlet duct, devolatilize ware main part top middle part fixedly connected with mounting disc, mounting disc bottom fixedly connected with power supply line, mounting disc bottom fixedly connected with erection column, erection column bottom limit portion fixedly connected with heating bucket, erection column bottom middle part fixedly connected with electrothermal tube.

Preferably, the input of power supply line and the output electric connection of commercial power, the output of power supply line and the input electric connection of electrothermal tube, the inside conduction oil that has held of heating bucket, sealed bucket and take off and form the vacuum cavity between the ware main part.

Preferably, inboard top fixedly connected with driving motor of installation base, driving motor's input and the output electric connection of commercial power, driving motor's output shaft fixedly connected with drive shaft, drive shaft outside top fixedly connected with link, link outside fixedly connected with scraper, the drive shaft outside corresponds link bottom position department fixedly connected with stirring rake, drive shaft outside stirring rake bottom position department fixedly connected with corresponds stirring rake bottom position department fixedly connected with collar, the collar outside evenly is provided with the stripper.

Preferably, the side surface of the scraper is tightly attached to the inner side of the devolatilizer main body, the bottom end of the stripper is tightly attached to the top of the mounting base, and one half of the bottom of the connecting frame is positioned below the liquid level of the melt in the devolatilizer main body.

Preferably, the bottom end of the installation base is fixedly connected with a discharge hopper at a position corresponding to one side of the driving motor, the bottom end of the discharge hopper is fixedly connected with a discharge pipe, the middle part of the outer side of the discharge pipe is fixedly connected with an insulation can, the inner side of the insulation can is uniformly provided with an annular electric heating pipe, the input end of the annular electric heating pipe is electrically connected with the transmission end of a mains supply, and the insulation can is filled with insulation cotton.

Preferably, the inner side of the annular electric heating tube is tightly attached to the outer side of the discharge tube, the top of the heat preservation box is fixedly connected with a fixing frame, and the top end of the fixing frame is fixedly connected with the mounting base.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. the heating barrel is arranged at the top of the inner side of the devolatilizer body through the matching between the mounting disc and the mounting column, the heating barrel is not in direct contact with the top of the devolatilizer body under the action of the mounting column, heat-conducting oil in the heating barrel is heated through the electric heating tube before the devolatilizer normally works, after the temperature of the heat-conducting oil reaches half of the temperature of the devolatilizer when the devolatilizer normally works, the heat-conducting oil starts to be supplied to the interior of the devolatilizer through the feeding pipe, the preheater, the annular pipe and the discharging port, in the process of adjusting the polymer to fall from the discharging port to the bottom of the devolatilizer body, volatile components in the polymer are separated from the polymer and are discharged from the air outlet pipe, when the boiler suddenly breaks down, the rate of temperature reduction in the devolatilizer body is reduced through the vacuum cavity, and simultaneously the heat of the heat-conducting oil in the heating barrel is diffused outwards, the devolatilizer can still keep the working temperature when the boiler breaks down suddenly, the phenomenon that the temperature in the devolatilizer drops suddenly after the boiler breaks down is prevented, and the product quality of polystyrene is improved.

2. The drive shaft has been set up, the link, the scraper, the stirring rake, collar and stripper, at the in-process of taking off the operation of ware, drive the drive shaft through driving motor and rotate, cooperation through between link and the scraper, scrape the inner wall of taking off the ware main part, prevent that melting polymer from taking off the bonding of ware main part inner wall, melt in to taking off the ware main part through the stirring rake lasts the stirring, prevent that the melt local solidification, through the cooperation between collar and the stripper, stir the melting polymer of taking off ware main part bottom, the work flow of taking off the ware has been optimized.

3. The discharging hopper, the discharging pipe, the insulation can, the annular electric heating tube, the heat preservation cotton and the mount have been set up, will take off the inside molten polymer of ware main part and derive through discharging hopper and discharging pipe, when molten polymer flows in from the discharging pipe, through the insulation can, cooperation between annular electric heating tube and the heat preservation cotton, carry out the continuous heating to the polymer of discharging pipe, prevent that molten polymer from solidifying in the discharging pipe inboard, make the polymer can carry out next process smoothly, optimized the transportation of polymer.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the internal structure of the devolatilizer body of the present invention;

FIG. 3 is a schematic view of the structure of the incubator of the present invention;

FIG. 4 is a schematic view of the scraper mounting structure of the present invention;

reference numbers in the figures: 1. installing a base; 2. sealing the barrel outside; 3. a devolatilizer body; 4. a feed pipe; 5. a preheater; 6. an annular tube; 7. a discharge port; 8. an air outlet pipe; 9. mounting a disc; 10. a power supply line; 11. mounting a column; 12. a heating barrel; 13. an electric heating tube; 14. a vacuum chamber; 15. a drive motor; 16. a drive shaft; 17. a connecting frame; 18. a scraper; 19. a stirring paddle; 20. a mounting ring; 21. a stripper plate; 22. a discharge hopper; 23. a discharge pipe; 24. a heat preservation box; 25. an annular electric heating tube; 26. heat preservation cotton; 27. a fixing frame.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in figures 1-4, the utility model provides a technical scheme, a falling strip type devolatilizer with good heat preservation effect for polystyrene production, which comprises an installation base 1, a sealing barrel 2 is fixedly connected with the top end edge part of the installation base 1, a devolatilizer main body 3 is fixedly connected with the top end of the installation base 1 corresponding to the inner side position of the sealing barrel 2, one side of the devolatilizer main body 3 is fixedly connected with a feed pipe 4, one section of the feed pipe 4 is fixedly connected with a preheater 5, the other section of the feed pipe 4 is fixedly connected with a ring pipe 6, the bottom end of the ring pipe 6 is uniformly provided with a discharge port 7, the other side of the devolatilizer main body 3 is fixedly connected with an air outlet pipe 8, the middle part of the top end of the devolatilizer main body 3 is fixedly connected with an installation plate 9, the bottom end of the installation plate 9 is fixedly connected with a, the middle part of the bottom end of the mounting column 11 is fixedly connected with an electric heating tube 13, the input end of the power supply line 10 is electrically connected with the output end of a commercial power, the output end of the power supply line 10 is electrically connected with the input end of the electric heating tube 13, heat conducting oil is contained in the heating barrel 12, a vacuum cavity 14 is formed between the sealing barrel 2 and the devolatilizer main body 3, the heating barrel 12 is arranged at the top of the inner side of the devolatilizer main body 3 through the matching between the mounting disc 9 and the mounting column 11, the heating barrel 12 is not in direct contact with the top of the devolatilizer main body 3 under the action of the mounting column 11, before the devolatilizer works normally, the heat conducting oil in the heating barrel 12 is heated through the electric heating tube 13, after the temperature reaches half of the temperature of the devolatilizer when the devolatilizer works normally, the feeding is started to the inside of the devolatilizer through the feeding pipe 4, the preheater 5, the annular pipe 6 and the discharging, volatile components in the polymer are separated from the polymer and are discharged from the gas outlet pipe 8, when the boiler suddenly breaks down, the rate of temperature reduction in the devolatilizer main body 3 is reduced through the vacuum cavity 14, and meanwhile, the heat of the heat conduction oil in the heating barrel 12 is diffused outwards, so that the devolatilizer can still keep the working temperature when the boiler suddenly breaks down, the phenomenon that the temperature in the devolatilizer suddenly drops after the boiler breaks down is prevented, and the product quality of polystyrene is improved;

the top of the inner side of the installation base 1 is fixedly connected with a driving motor 15, the input end of the driving motor 15 is electrically connected with the output end of a commercial power, the output shaft of the driving motor 15 is fixedly connected with a driving shaft 16, the top of the outer side of the driving shaft 16 is fixedly connected with a connecting frame 17, the outer side of the connecting frame 17 is fixedly connected with a scraper 18, the outer side of the driving shaft 16 is fixedly connected with a stirring paddle 19 corresponding to the bottom of the connecting frame 17, the bottom of the stirring paddle 19 outside the driving shaft 16 is fixedly connected with an installation ring 20 corresponding to the bottom of the stirring paddle 19, the outer side of the installation ring 20 is uniformly provided with a discharging plate 21, the side surface of the scraper 18 is tightly attached to the inner side of the devolatilizer body 3, the bottom of the discharging plate 21 is tightly attached to the top of the installation base 1, one half of the bottom of the connecting frame 17, the inner wall of the devolatilizer body 3 is scraped through the matching between the connecting frame 17 and the scraper 18, so that the molten polymer is prevented from being adhered to the inner wall of the devolatilizer body 3, the molten material in the devolatilizer body 3 is continuously stirred through the stirring paddle 19, so that the molten material is prevented from being locally solidified, and the molten polymer at the bottom of the devolatilizer body 3 is stirred through the matching between the mounting ring 20 and the stripper plate 21, so that the working flow of the devolatilizer is optimized;

the bottom end of the installation base 1 is fixedly connected with a discharge hopper 22 at a position corresponding to one side of the driving motor 15, the bottom end of the discharge hopper 22 is fixedly connected with a discharge pipe 23, the middle part of the outer side of the discharge pipe 23 is fixedly connected with an insulation can 24, the inner side of the insulation can 24 is uniformly provided with an annular electric heating pipe 25, the input end of the annular electric heating pipe 25 is electrically connected with the transmission end of commercial power, insulation cotton 26 is filled in the insulation can 24, the inner side of the annular electric heating pipe 25 is tightly attached to the outer side of the discharge pipe 23, the top part of the insulation can 24 is fixedly connected with a fixed frame 27, the top end of the fixed frame 27 is fixedly connected with the installation base 1, molten polymer in the devolatilizer main body 3 is led out through the discharge hopper 22 and the discharge pipe 23, when the, prevent the molten polymer from solidifying at the inner side of the discharge pipe 23, so that the polymer can be smoothly carried out the next procedure, and the transportation process of the polymer is optimized.

The utility model discloses a theory of operation and use flow: the utility model discloses a cooperation between mounting disc 9 and erection column 11, install heating barrel 12 to the inboard top of devolatilizer main part 3, heating barrel 12 is not with devolatilizer main part 3 top direct contact under the effect of erection column 11, before the devolatilizer normally works, heat-conducting oil in heating barrel 12 is heated through electrothermal tube 13, make its temperature reach and devolatilizer normally work after half of the temperature, begin to feed to the devolatilizer inside through inlet pipe 4, pre-heater 5, ring pipe 6 and discharge gate 7, in the course that the adjustment polymer drops from discharge gate 7 to devolatilizer main part 3 bottom, the volatile and the polymer in the polymer separate, and discharge from outlet duct 8, when the boiler breaks down suddenly, the speed that has reduced the inside temperature of devolatilizer main part 3 through vacuum cavity 14, the heat diffusion of the heat-conducting oil inside heating barrel 12 simultaneously, the devolatilizer can still keep the working temperature when the boiler suddenly breaks down, the phenomenon that the temperature in the devolatilizer suddenly drops after the boiler breaks down is prevented, and the product quality of polystyrene is improved;

in the operation process of the devolatilizer, a driving shaft 16 is driven to rotate by a driving motor 15, the inner wall of a devolatilizer main body 3 is scraped by the matching between a connecting frame 17 and a scraper 18, so that the molten polymer is prevented from being adhered to the inner wall of the devolatilizer main body 3, the molten substance in the devolatilizer main body 3 is continuously stirred by a stirring paddle 19, the molten substance is prevented from being locally solidified, the molten polymer at the bottom of the devolatilizer main body 3 is stirred by the matching between an installation ring 20 and a discharge plate 21, and the working flow of the devolatilizer is optimized;

the molten polymer inside the devolatilizer main body 3 is guided out through the discharge hopper 22 and the discharge pipe 23, and when the molten polymer flows through the discharge pipe 23, the polymer of the discharge pipe 23 is continuously heated through the cooperation among the insulation can 24, the annular electric heating pipe 25 and the insulation cotton 26, so that the molten polymer is prevented from being solidified at the inner side of the discharge pipe 23, the next process can be smoothly carried out on the polymer, and the transportation process of the polymer is optimized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a ware is waved with falling strip formula that keeps warm effectually to polystyrene production, includes installation base (1), its characterized in that: the installation base (1) top edge fixedly connected with sealed barrel (2), the installation base (1) top corresponds sealed barrel (2) inboard position department fixedly connected with and takes off ware main part (3), take off ware main part (3) one side fixedly connected with inlet pipe (4), one section fixedly connected with pre-heater (5) of inlet pipe (4), another section fixedly connected with ring pipe (6) of inlet pipe (4), ring pipe (6) bottom evenly is provided with discharge gate (7), take off ware main part (3) opposite side fixedly connected with outlet duct (8), take off ware main part (3) top middle part fixedly connected with mounting disc (9), mounting disc (9) bottom fixedly connected with power supply line (10), mounting disc (9) bottom fixedly connected with erection column (11), erection column (11) bottom edge fixedly connected with heating barrel (12), the middle part of the bottom end of the mounting column (11) is fixedly connected with an electric heating tube (13).

2. The falling strip type devolatilizer with good heat insulation effect for polystyrene production according to claim 1, wherein an input end of the power supply line (10) is electrically connected with an output end of a mains supply, an output end of the power supply line (10) is electrically connected with an input end of an electric heating tube (13), heat conduction oil is contained in the heating barrel (12), and a vacuum cavity (14) is formed between the sealing barrel (2) and the devolatilizer main body (3).

3. The falling strip type devolatilizer with good heat insulation effect for polystyrene production as claimed in claim 1, it is characterized in that the top of the inner side of the mounting base (1) is fixedly connected with a driving motor (15), the input end of the driving motor (15) is electrically connected with the output end of the commercial power, the output shaft of the driving motor (15) is fixedly connected with a driving shaft (16), the top end of the outer side of the driving shaft (16) is fixedly connected with a connecting frame (17), the outer side of the connecting frame (17) is fixedly connected with a scraper (18), the outer side of the driving shaft (16) is fixedly connected with a stirring paddle (19) corresponding to the bottom of the connecting frame (17), the discharging device is characterized in that the bottom of the stirring paddle (19) on the outer side of the driving shaft (16) is fixedly connected with a mounting ring (20) corresponding to the bottom of the stirring paddle (19), and discharging plates (21) are uniformly arranged on the outer side of the mounting ring (20).

4. The falling bar type devolatilizer with good heat preservation effect for polystyrene production as claimed in claim 3, wherein said scraper (18) side surface is closely attached to the inner side of devolatilizer body (3), said bottom end of said discharging plate (21) is closely attached to the top of mounting base (1), and one half of said bottom of said connecting frame (17) is located under the liquid level of the melt in devolatilizer body (3).

5. The falling strip type devolatilizer with good heat insulation effect for polystyrene production according to claim 1, wherein a discharge hopper (22) is fixedly connected to a position of one side of the bottom end of the mounting base (1) corresponding to the driving motor (15), a discharge pipe (23) is fixedly connected to the bottom end of the discharge hopper (22), a heat insulation box (24) is fixedly connected to the middle of the outer side of the discharge pipe (23), annular electric heating tubes (25) are uniformly arranged on the inner side of the heat insulation box (24), the input ends of the annular electric heating tubes (25) are electrically connected with the transmission end of a mains supply, and heat insulation cotton (26) is filled in the heat insulation box (24).

6. The falling strip type devolatilizer with good heat insulation effect for polystyrene production as claimed in claim 5, wherein the inner side of the annular electric heating tube (25) is tightly attached to the outer side of the discharge tube (23), the top of the heat insulation box (24) is fixedly connected with a fixing frame (27), and the top end of the fixing frame (27) is fixedly connected with the mounting base (1).