CN114161602A

CN114161602A - Raw material mixing process and device for preparing heat-resistant flame-retardant polystyrene

Info

Publication number: CN114161602A
Application number: CN202111598218.8A
Authority: CN
Inventors: 王次让; 王胜; 郝艳民; 冯国玺
Original assignee: Jiangsu CITIC Guoan New Material Co Ltd
Current assignee: Jiangsu CITIC Guoan New Material Co Ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-03-11

Abstract

The invention discloses a raw material mixing process and a raw material mixing device for preparing heat-resistant flame-retardant polystyrene, which relate to the field of polystyrene preparation, and comprise a mixing tank and a stirring mechanism, and further comprise a first reagent box, a second reagent box and two groups of automatic adding mechanisms, wherein a feed inlet is formed in the front side of the upper end of the mixing tank, the stirring mechanism is arranged in the mixing tank, a stirring rod in the stirring mechanism can be vertically and rotatably arranged in the mixing tank, the first reagent box and the second reagent box are respectively and fixedly arranged on the left side and the right side of the upper end of the mixing tank, and the lower ends of the first reagent box and the second reagent box are respectively and fixedly connected with an adding pipe. The invention can automatically and continuously add the initiator and the transfer agent when mixing the rubber raw material and the styrene monomer raw material, so that the transfer agent and the initiator are fully contacted with the raw material, thereby fully improving the polymerization phase change efficiency and the conversion efficiency after mixing the raw material and being convenient for people to use.

Description

Raw material mixing process and device for preparing heat-resistant flame-retardant polystyrene

Technical Field

The invention belongs to the technical field of polystyrene preparation, and particularly relates to a raw material mixing process and a raw material mixing device for preparing heat-resistant flame-retardant polystyrene.

Background

Polystyrene resin, namely Poly in English, the CAS number of 9003-53-6 and the molecular formula of C8H8, is mainly used for foam molding, is used as a heat-preservation, heat-insulation, shockproof, packaging material and floating product, and is generally suitable for packaging material; the flame retardant is suitable for building and heat insulating materials.

At present, in the preparation process of polystyrene, a rubber raw material is required to be dissolved in a styrene monomer, then a polymerization reaction is carried out, when the polymerization reaction is converted to 6-10%, two phases, namely a PS phase and a rubber phase, are formed, thus when the PS phase in the styrene and the rubber phase in the styrene reach a certain phase volume ratio, phase change is carried out under the condition of shear stress stirring, at the moment, the compatibility of the rubber in a reaction system is reduced, the viscosity of the system is suddenly reduced due to the precipitation of the rubber, and the rubber particles are dispersed into small cut particles under the condition of the shear stress, which is the key point of the HIPS production by a bulk polymerization method, the reaction is carried out simultaneously by two modes of styrene bulk polymerization and rubber styrene polymerization, when the conversion rate reaches 75-80% through continuous reaction of four polymerization kettles, a polymer is fed into a degassing tank, unreacted monomers are removed, and then strip drawing is extruded, When the rubber raw material and the styrene monomer raw material are mixed, a transfer agent and an initiator need to be added into a mixing tank, so that the polymerization phase change efficiency and the conversion efficiency of the mixed raw materials are improved.

Disclosure of Invention

Aiming at the situation and overcoming the defects of the prior art, the invention provides a raw material mixing process and a raw material mixing device for preparing heat-resistant flame-retardant polystyrene, which effectively solve the problems that when a transfer agent and an initiator are added at present, the transfer agent and the initiator are generally added into a mixing tank together with a rubber raw material and a styrene monomer raw material, and the transfer agent and the initiator are aggregated together and cannot be fully contacted with the rubber raw material and the styrene monomer raw material during mixing and stirring, so that the improvement of the polymerization phase change efficiency and the conversion efficiency after the raw materials are mixed is influenced, and the use of people is influenced.

In order to achieve the purpose, the invention provides the following technical scheme: a raw material mixing device for preparing heat-resistant flame-retardant polystyrene comprises a mixing tank, a stirring mechanism, a first reagent box, a second reagent box and two groups of automatic adding mechanisms, wherein a feed inlet is formed in the front side of the upper end of the mixing tank, the stirring mechanism is arranged in the mixing tank, a stirring rod in the stirring mechanism can be vertically and rotatably arranged in the mixing tank, the first reagent box and the second reagent box are respectively and fixedly arranged on the left side and the right side of the upper end of the mixing tank, the lower ends of the first reagent box and the second reagent box are respectively and fixedly connected with adding pipes, the lower ends of the two adding pipes are respectively and fixedly penetrated through the upper side wall of the mixing tank and extend to the upper part of the inner part of the mixing tank, the two groups of automatic adding mechanisms are respectively arranged in the two adding pipes, the middle part of the lower end of the mixing tank is fixedly connected with a discharging pipe, and the lower end of the discharging pipe is provided with a control valve, the periphery of the lower end of the mixing tank is fixedly connected with a plurality of supporting legs which are symmetrically distributed.

Preferably, each group of automatic adding mechanisms comprises a blanking assembly and a circulating driving assembly, the blanking assembly comprises an annular sealing plate, a blocking ball, an ejector rod, a circular plate and a spring, the annular sealing plate is horizontally and fixedly arranged inside the adding pipe, the blocking ball is movably arranged in the adding pipe and is positioned above the annular sealing plate, the middle part of the lower side of the blocking ball is fixedly connected with the ejector rod, the lower end of the ejector rod penetrates through the annular sealing plate and extends to the outer side below the adding pipe, the circular plate is slidably arranged in the adding pipe, the ejector rod is fixedly inserted with the circular plate, the spring is positioned between the annular sealing plate and the circular plate, the upper end and the lower end of the spring are respectively fixedly connected with the annular sealing plate and the circular plate, the spring and the ejector rod are movably sleeved, the circulating driving assembly is arranged below the adding pipe, and the stirring rod can drive the ejector rod to vertically move through the driving assembly, the upper end of the circular plate is provided with a plurality of circular holes which are uniformly distributed in an annular shape around the ejector rod.

Preferably, the circulating driving assembly comprises a transmission rod, a cam, a first bevel gear and a second bevel gear, the transmission rod is transversely arranged below the ejector rod, one end, far away from the stirring rod, of the transmission rod is rotatably connected with the side wall of the mixing tank through a first bearing, the cam is arranged below the ejector rod and fixedly connected with the transmission rod in an inserting mode, the upper side of the cam abuts against the lower end of the ejector rod, the right end of the transmission rod is fixedly connected with the first bevel gear, the second bevel gear is fixedly connected with the upper portion of the wall of the stirring rod in an inserting mode, and the first bevel gear is in meshed connection with the second bevel gear.

Preferably, the transmission rod comprises a first rotating rod and a second rotating rod, the first rotating rod is rotatably connected with the side wall of the mixing tank through a first bearing and fixedly connected with the cam in an inserting mode, the second rotating rod is fixedly connected with the first bevel gear in an inserting mode, and the first rotating rod and the second rotating rod are connected with each other through an overrunning clutch.

Preferably, rabbling mechanism includes servo motor, puddler, reciprocal subassembly and two sets of stirring leaf from top to bottom, servo motor is fixed to be set up at the upper end middle part of blending tank, the upper end of puddler is passed through the second bearing and is rotated with the last lateral wall of blending tank and be connected and extend to the top outside of blending tank, the upper end fixed connection of shaft coupling and puddler is passed through to servo motor's output, reciprocal subassembly setting is on the pole wall of puddler from top to bottom, and the equal fixedly connected with montant in two opposite both sides of screw-nut in the reciprocal subassembly from top to bottom, two the opposite both sides pole wall of montant respectively with two sets of stirring leaf fixed connection.

Preferably, the up-and-down reciprocating assembly comprises a circular ring, an annular rack, two straight gears, two reciprocating screw rods and two screw rod nuts, the two reciprocating screw rods are respectively vertically arranged at the left side and the right side of the stirring rod, and both ends of the rod wall of each reciprocating screw rod are rotatably connected with fixed blocks through third bearings, two groups of fixed blocks are fixedly connected with the rod wall of the stirring rod, two screw rod nuts are respectively matched with the rod walls of the two reciprocating screw rods and movably sleeved with the rod walls of the two reciprocating screw rods, and a sleeve is fixedly connected between the two screw rod nuts, the sleeve is sleeved with the stirring rod in a sliding manner, the upper ends of the two reciprocating screw rods penetrate through the second bevel gear through a fourth bearing and are respectively and fixedly connected with the two straight gears, the ring is fixedly connected with the middle part of the upper inner side wall of the mixing tank, the annular rack is fixedly arranged in the ring, and the straight gears are positioned in the annular rack and meshed with the annular rack.

Preferably, both sides all are provided with the arc around the puddler and scrape the pole, two the pole is scraped to the arc and is the slope setting and about puddler central symmetry, and two arcs scrape the pole respectively with two inside walls offsets and can slide around the blending tank two the pole is scraped to the arc all through connecting rod and puddler fixed connection.

Preferably, every group the quantity of stirring leaf sets up to four, four stirring leaf is from last to lower align to grid in proper order.

Preferably, the outer surface of the blocking ball is fixedly sleeved with a sealing sleeve.

A raw material mixing process for preparing heat-resistant flame-retardant polystyrene also comprises the following steps:

s1, preparing, namely introducing the preparation raw materials to be mixed into a mixing tank through a feed hopper, and introducing an initiator and a transfer agent into a first reagent box and a second reagent box respectively;

s2, mixing preparation, starting a servo motor to enable the servo motor to rotate in a forward direction, enabling the servo motor to drive a stirring rod to rotate, enabling the stirring rod to drive two reciprocating screw rods to rotate around the stirring rod through two groups of fixing blocks, enabling the two reciprocating screw rods to drive two vertical rods to rotate around the stirring rod through two screw rod nuts, enabling the two vertical rods to drive two groups of stirring blades to rotate around the stirring rod, enabling the two screw rod nuts to drive two straight gears to rotate around the stirring rod inside an annular rack, enabling the two straight gears to drive the two reciprocating screw rods to rotate respectively, enabling the two reciprocating screw rods to rotate to enable the two screw rod nuts to reciprocate up and down simultaneously, enabling the two screw rod nuts to drive the two groups of stirring blades to reciprocate up and down through the two vertical rods respectively, and enabling raw materials in a mixing tank to be fully stirred and mixed to prepare a polystyrene polymer;

the stirring rod rotates to drive the second bevel gear to rotate, the second bevel gear drives the two first bevel gears to rotate simultaneously, the two first bevel gears drive the two second rotating rods to rotate respectively, the two second rotating rods drive the two first rotating rods to rotate through the two overrunning clutches respectively, the two first rotating rods drive the two cams to rotate respectively, the first cams can intermittently jack the ejector rods upwards, the ejector rods intermittently drive the plugging balls to move upwards, meanwhile, the springs continuously apply downward elastic force to the circular plates, and the circular plates continuously apply downward thrust force to the ejector rods, so that the ejector rods and the plugging balls move up and down in a reciprocating mode, the plugging balls and the annular sealing plates can be opened and closed in a circulating mode, and automatic blanking can be conducted on the initiating agent and the transferring agent intermittently;

s3, automatic discharging, open the control valve on the unloading pipe, polystyrene after the mixture preparation passes through the unloading pipe discharge, carry out the antiport with servo motor simultaneously, servo motor antiport makes the puddler drive two sets of stirring leaves and rotates and up-and-down reciprocating motion, the puddler still drives two arcs through two connecting rods and scrapes the pole rotation, two arcs scrape the pole and strike off remaining polystyrene polymer on the blending tank inner wall downwards, make the quick unloading of blending tank, reduce the inside polystyrene residue of blending tank, and when puddler antiport, two first bevel gears drive two second bull stick antiport respectively, thereby two first bull sticks can not take place to rotate, can stop promptly to adding initiator and shifting agent in the blending tank.

The invention has the technical effects and advantages that:

1. through the mutual matching of the mixing tank, the first reagent box of the stirring mechanism, the second reagent box and the two groups of automatic adding mechanisms, when raw materials are mixed, a servo motor is started to enable the servo motor to rotate in the forward direction, the servo motor drives a stirring rod to rotate, the stirring rod drives two reciprocating lead screws to rotate around the stirring rod through two groups of fixed blocks, the two reciprocating lead screws drive two vertical rods to rotate around the stirring rod through two lead screw nuts, the two vertical rods drive two groups of stirring blades to rotate around the stirring rod, meanwhile, the two lead screw nuts drive two straight gears to rotate around the stirring rod in the annular rack, so that the two straight gears respectively drive the two reciprocating lead screws to rotate, the two reciprocating lead screw nuts can simultaneously reciprocate up and down through the rotation of the two lead screw nuts, the two lead screw nuts respectively drive the two groups of stirring blades to reciprocate up and down through the two vertical rods, and the raw materials in the mixing tank can be fully stirred and mixed, preparing a polymer of polystyrene;

the rotation of the stirring rod also drives the rotation of a second bevel gear, the second bevel gear simultaneously drives two first bevel gears to rotate, the two first bevel gears respectively drive two second rotating rods to rotate, the two second rotating rods respectively drive the two first rotating rods to rotate through two overrunning clutches, the two first rotating rods respectively drive two cams to rotate, the first cams can intermittently jack the ejector rods upwards, the ejector rods intermittently drive the plugging balls to move upwards, meanwhile, the spring continuously applies downward elastic force to the circular plate, the circular plate continuously applies downward thrust to the ejector rod, the ejector rod and the blocking ball move up and down in a reciprocating manner, so that the blocking ball and the annular sealing plate can be opened and closed in a circulating manner, the initiator and the transfer agent can be automatically fed intermittently, the initiator and the transfer agent can be fully contacted with the raw materials, and the polymerization phase change efficiency and the conversion efficiency of the mixed raw materials are fully improved;

during the ejection of compact, open the control valve on the pipe of will unloading, polystyrene after the mixture preparation passes through the unloading pipe discharge, carry out the antiport with servo motor simultaneously, servo motor antiport makes the puddler drive two sets of stirring leaves and rotates and reciprocating motion from top to bottom, the puddler still drives two arcs through two connecting rods and scrapes the pole rotation, two arcs scrape the pole and strike off remaining polystyrene polymer on with the blending tank inner wall downwards, make the quick unloading of blending tank, reduce the inside polystyrene residue of blending tank, and when the puddler antiport, two first bevel gears drive two second bull stick antiport respectively, thereby two first bull sticks can not take place to rotate, can stop promptly to adding initiator and shifting agent in the blending tank.

Drawings

The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional front view of the present invention;

FIG. 3 is a schematic structural view of a blanking assembly of the present invention;

FIG. 4 is a schematic perspective view of the lift pin and the circular plate of the present invention;

FIG. 5 is a schematic view of the connection of two first bevel gears and a second bevel gear according to the present invention;

FIG. 6 is a schematic top view of two servo nuts and a sleeve of the present invention;

FIG. 7 is a schematic bottom view of two spur gears and a circular rack of the present invention;

fig. 8 is a schematic side view of the stirring mechanism of the present invention.

In the figure: 1. a mixing tank; 2. a first reagent tank; 3. a second reagent tank; 4. a stirring rod; 5. an addition pipe; 6. a discharging pipe; 7. supporting legs; 8. an annular seal plate; 9. plugging the ball; 10. a top rod; 11. a circular plate; 12. a spring; 13. a cam; 14. a first bevel gear; 15. a second bevel gear; 16. a first rotating lever; 17. a second rotating rod; 18. a servo motor; 19. stirring blades; 20. a feed screw nut; 21. a vertical rod; 22. a circular ring; 23. an annular rack; 24. a spur gear; 25. a reciprocating screw rod; 26. a fixed block; 27. a sleeve; 28. an arc-shaped scraping rod; 29. a connecting rod; 30. sealing sleeves; 31. an overrunning clutch.

Detailed Description

The invention provides a raw material mixing device for preparing heat-resistant flame-retardant polystyrene, which comprises a mixing tank 1 and a stirring mechanism, and also comprises a first reagent box 2, a second reagent box 3 and two groups of automatic adding mechanisms, wherein a feed inlet is arranged at the front side of the upper end of the mixing tank 1, the stirring mechanism is arranged in the mixing tank 1, a stirring rod 4 in the stirring mechanism can be vertically and rotatably arranged in the mixing tank 1, the first reagent box 2 and the second reagent box 3 are respectively and fixedly arranged at the left side and the right side of the upper end of the mixing tank 1, the lower ends of the first reagent box 2 and the second reagent box 3 are respectively and fixedly connected with an adding pipe 5, the lower ends of the two adding pipes 5 are respectively and fixedly penetrated through the upper side wall of the mixing tank 1 and extend to the upper part of the inner part of the mixing tank 1, the two groups of automatic adding mechanisms are respectively arranged in the two adding pipes 5, a discharging pipe 6 is fixedly connected to the middle part of the lower end of the mixing tank 1, the lower extreme of unloading pipe 6 is provided with the control valve, and the lower extreme of blending tank 1 is fixed connection all around has a plurality of symmetric distribution's supporting legs 7.

As shown in fig. 2-5, each group of automatic adding mechanisms includes a feeding component and a circulating driving component, the feeding component includes an annular sealing plate 8, a blocking ball 9, a push rod 10, a circular plate 11 and a spring 12, the annular sealing plate 8 is horizontally and fixedly disposed inside the adding pipe 5, the blocking ball 9 is movably disposed in the adding pipe 5 and is located above the annular sealing plate 8, the middle of the lower side of the blocking ball 9 is fixedly connected with the push rod 10, the lower end of the push rod 10 passes through the annular sealing plate 8 and extends to the outer side below the adding pipe 5, the circular plate 11 is slidably disposed in the adding pipe 5, the push rod 10 is fixedly inserted into the circular plate 11, the spring 12 is located between the annular sealing plate 8 and the circular plate 11, the upper end and the lower end of the spring 12 are respectively fixedly connected with the annular sealing plate 8 and the circular plate 11, the spring 12 is movably sleeved with the push rod 10, the circulating driving component is disposed below the adding pipe 5, and the stirring rod 4 can drive the push rod 10 to vertically move through the driving component, the upper end of the circular plate 11 is provided with a plurality of circular holes which are uniformly distributed in an annular shape around the mandril 10.

Meanwhile, the circulating driving assembly comprises a transmission rod, a cam 13, a first bevel gear 14 and a second bevel gear 15, the transmission rod is transversely arranged below the ejector rod 10, one end, far away from the stirring rod 4, of the transmission rod is rotatably connected with the side wall of the mixing tank 1 through a first bearing, the cam 13 is located below the ejector rod 10 and fixedly connected with the transmission rod in an inserting mode, the upper side of the cam 13 abuts against the lower end of the ejector rod 10, the right end of the transmission rod is fixedly connected with the first bevel gear 14, the second bevel gear 15 is fixedly connected with the upper portion of the rod wall of the stirring rod 4 in an inserting mode, and the first bevel gear 14 is in meshed connection with the second bevel gear 15.

In addition, the transmission rod comprises a first rotating rod 16 and a second rotating rod 17, the first rotating rod 16 is rotatably connected with the side wall of the mixing tank 1 through a first bearing and fixedly inserted with the cam 13, the second rotating rod 17 is fixedly inserted with the first bevel gear 14, and the first rotating rod 16 and the second rotating rod 17 are connected with each other through an overrunning clutch 31.

As shown in fig. 2 and fig. 6-8, the stirring mechanism includes a servo motor 18, a stirring rod 4, an up-down reciprocating assembly and two groups of stirring blades 19, the servo motor 18 is fixedly arranged in the middle of the upper end of the mixing tank 1, the upper end of the stirring rod 4 is rotatably connected with the upper side wall of the mixing tank 1 through a second bearing and extends to the outside above the mixing tank 1, the output end of the servo motor 18 is fixedly connected with the upper end of the stirring rod 4 through a coupler, the up-down reciprocating assembly is arranged on the rod wall of the stirring rod 4, two opposite sides of two lead screw nuts 20 in the up-down reciprocating assembly are fixedly connected with vertical rods 21, and two opposite side rod walls of the two vertical rods 21 are respectively fixedly connected with the two groups of stirring blades 19.

Meanwhile, the up-down reciprocating component comprises a circular ring 22, an annular rack 23, two straight gears 24, two reciprocating screw rods 25 and two screw rod nuts 20, the two reciprocating screw rods 25 are respectively vertically arranged at the left side and the right side of the stirring rod 4, and both ends of the rod wall of each reciprocating screw rod 25 are rotatably connected with fixed blocks 26 through third bearings, two groups of fixed blocks 26 are fixedly connected with the rod wall of the stirring rod 4, two screw rod nuts 20 are respectively matched with the rod walls of the two reciprocating screw rods 25 and movably sleeved, and a sleeve 27 is fixedly connected between the two feed screw nuts 20, the sleeve 27 is sleeved with the stirring rod 4 in a sliding way, the upper ends of the two reciprocating feed screws 25 penetrate through the second bevel gear 15 through fourth bearings and are respectively and fixedly connected with the two straight gears 24, a circular ring 22 is fixedly connected with the middle part of the upper inner side wall of the mixing tank 1, an annular rack 23 is fixedly arranged in the circular ring 22, the two spur gears 24 are both located inside the annular rack 23 and are in meshed connection with the annular rack 23.

In addition, both sides all are provided with the arc and scrape pole 28 around the puddler 4, and two arcs scrape the pole 28 and are slope setting and about puddler 4 central symmetry, and two arcs scrape the pole 28 and offset and can slide with two inside walls in the front and back of blending tank 1 respectively, and two arcs scrape pole 28 and all pass through connecting rod 29 and puddler 4 fixed connection.

Moreover, the number of each group of the stirring blades 19 is four, and the four stirring blades 19 are uniformly arranged from top to bottom in sequence.

It should be noted that the sealing sleeve 30 is fixedly sleeved on the outer surface of the sealing ball 9, so that the sealing performance between the sealing ball 9 and the annular sealing plate 8 can be improved.

s1, preparing, namely introducing the preparation raw materials to be mixed into the mixing tank 1 through a feed hopper, and introducing the initiator and the transfer agent into the first reagent box 2 and the second reagent box 3 respectively;

s2, mixing preparation, starting the servo motor 18 to enable the servo motor 18 to rotate in the forward direction, enabling the servo motor 18 to drive the stirring rod 4 to rotate, enabling the stirring rod 4 to drive the two reciprocating screw rods 25 to rotate around the stirring rod 4 through the two groups of fixing blocks 26, enabling the two reciprocating screw rods 25 to drive the two vertical rods 21 to rotate around the stirring rod 4 through the two screw rod nuts 20, enabling the two reciprocating screw rods 25 to rotate up and down simultaneously through the two reciprocating screw rods 25, enabling the two screw rod nuts 20 to drive the two straight gears 24 to rotate around the stirring rod 4 inside the annular rack 23 at the same time, enabling the two straight gears 24 to respectively drive the two reciprocating screw rods 25 to rotate, enabling the two screw rod nuts 20 to simultaneously move up and down in a reciprocating mode, enabling the two screw rod nuts 20 to respectively drive the two groups of stirring blades 19 to move up and down in a reciprocating mode through the two vertical rods 21, enabling raw materials in the mixing tank 1 to be fully stirred and mixed, preparing a polymer of polystyrene;

the stirring rod 4 rotates and also drives a second bevel gear 15 to rotate, the second bevel gear 15 simultaneously drives two first bevel gears 14 to rotate, the two first bevel gears 14 respectively drive two second rotating rods 17 to rotate, the two second rotating rods 17 respectively drive two first rotating rods 16 to rotate through two overrunning clutches, the two first rotating rods 16 respectively drive two cams 13 to rotate, the first cams 13 can intermittently jack the ejector rods 10 upwards, the ejector rods 10 intermittently drive the blocking balls 9 to move upwards, meanwhile, the springs 12 continuously apply downward elastic force to the circular plates 11, the circular plates 11 continuously apply downward thrust force to the ejector rods 10, and therefore the ejector rods 10 and the blocking balls 9 reciprocate upwards and downwards, then the blocking balls 9 and the annular sealing plates 8 can be opened and closed circularly, and automatic blanking can be intermittently performed on initiators and transfer agents;

s3, automatic discharging, open the control valve on the unloading pipe 6, polystyrene after the mixing preparation is discharged through the unloading pipe 6, simultaneously carry out the antiport with servo motor 18, servo motor 18 antiport makes puddler 4 drive two sets of stirring leaf 19 and rotate and reciprocating up and down, puddler 4 still drives two arcs through two connecting rods 29 and scrapes the pole 28 and rotate, two arcs scrape the pole 28 and scrape the remaining polystyrene polymer on the blending tank 1 inner wall downwards, make blending tank 1 unloading fast, reduce the inside polystyrene residue of blending tank 1, and when puddler 4 antiport, two first bevel gears 14 drive two second bull sticks 17 antiport respectively, thereby two first bull sticks 16 can not take place the rotation, can stop promptly to add initiator and transfer agent in blending tank 1.

The working principle of the invention is as follows: when the raw materials are mixed, the servo motor 18 is started, the servo motor 18 rotates in the forward direction, the servo motor 18 drives the stirring rod 4 to rotate, the stirring rod 4 drives the two reciprocating screw rods 25 to rotate around the stirring rod 4 through the two groups of fixed blocks 26, the two reciprocating screw rods 25 drive the two vertical rods 21 to rotate around the stirring rod 4 through the two screw rod nuts 20, the two vertical rods 21 drive the two groups of stirring blades 19 to rotate around the stirring rod 4, meanwhile, the two feed screw nuts 20 drive the two straight gears 24 to rotate around the stirring rod 4 in the annular rack 23, the two straight gears 24 respectively drive the two reciprocating screw rods 25 to rotate, the two reciprocating screw rods 25 can enable the two screw rod nuts 20 to simultaneously reciprocate up and down, the two screw rod nuts 20 respectively drive the two groups of stirring blades 19 to reciprocate up and down through the two vertical rods 21, and raw materials in the mixing tank 1 can be fully stirred and mixed to prepare a polystyrene polymer;

the stirring rod 4 rotates and also drives the second bevel gear 15 to rotate, the second bevel gear 15 simultaneously drives the two first bevel gears 14 to rotate, the two first bevel gears 14 respectively drive the two second rotating rods 17 to rotate, the two second rotating rods 17 respectively drive the two first rotating rods 16 to rotate through the two overrunning clutches, the two first rotating rods 16 respectively drive the two cams 13 to rotate, the first cams 13 can intermittently jack the ejector rods 10 upwards, the ejector rods 10 intermittently drive the blocking balls 9 to move upwards, meanwhile, the springs 12 continuously apply downward elastic force to the circular plates 11, the circular plates 11 continuously apply downward thrust force to the ejector rods 10, so that the ejector rods 10 and the blocking balls 9 reciprocate upwards and downwards, then the blocking balls 9 and the annular sealing plates 8 can be opened and closed circularly, the initiator and the transfer agent can be automatically fed intermittently, and the initiator and the transfer agent can be fully contacted with raw materials, thereby fully improving the polymerization phase change efficiency and the conversion efficiency after the raw materials are mixed;

during the ejection of compact, open the control valve on the unloading pipe 6, polystyrene after the mixture preparation passes through unloading pipe 6 and discharges, carry out the antiport with servo motor 18 simultaneously, servo motor 18 antiport makes puddler 4 drive two sets of stirring leaves 19 and rotate and up-and-down reciprocating motion, puddler 4 still drives two arcs through two connecting rods 29 and scrapes the pole 28 rotation, two arcs scrape the pole 28 and strike off remaining polystyrene polymer on the 1 inner wall of blending tank downwards, make blending tank 1 unloading fast, reduce the inside polystyrene of blending tank 1 and remain, and when puddler 4 antiport, two first bevel gears 14 drive two second bull stick 17 antiport respectively, thereby two first bull sticks 16 can not take place to rotate, can stop promptly to add initiating agent and shifting agent in blending tank 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a raw materials mixing arrangement that heat-resisting fire-retardant type polystyrene preparation was used, includes blending tank (1) and rabbling mechanism, its characterized in that: the automatic feeding device is characterized by further comprising a first reagent box (2), a second reagent box (3) and two groups of automatic feeding mechanisms, wherein a feeding hole is formed in the front side of the upper end of the mixing tank (1), the stirring mechanisms are arranged inside the mixing tank (1), a stirring rod (4) in the stirring mechanisms can be vertically and rotatably arranged in the mixing tank (1), the first reagent box (2) and the second reagent box (3) are respectively and fixedly arranged on the left side and the right side of the upper end of the mixing tank (1), the lower ends of the first reagent box (2) and the second reagent box (3) are respectively and fixedly connected with feeding pipes (5), the lower ends of the two feeding pipes (5) are respectively and fixedly penetrate through the upper side wall of the mixing tank (1) and extend to the upper portion inside of the mixing tank (1), the two groups of automatic feeding mechanisms are respectively arranged in the two feeding pipes (5), and a discharging pipe (6) is fixedly connected to the middle of the lower end of the mixing tank (1), the lower extreme of unloading pipe (6) is provided with the control valve, a plurality of symmetric distribution's supporting legs (7) are fixedly connected with all around to the lower extreme of blending tank (1).

2. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 1, characterized in that: each group of automatic adding mechanism comprises a blanking assembly and a circulating driving assembly, the blanking assembly comprises an annular sealing plate (8), a blocking ball (9), an ejector rod (10), a circular plate (11) and a spring (12), the annular sealing plate (8) is horizontally and fixedly arranged inside the adding pipe (5), the blocking ball (9) is movably arranged in the adding pipe (5) and is positioned above the annular sealing plate (8), the middle part of the lower side of the blocking ball (9) is fixedly connected with the ejector rod (10), the lower end of the ejector rod (10) penetrates through the annular sealing plate (8) and extends to the outer side of the lower part of the adding pipe (5), the circular plate (11) is slidably arranged in the adding pipe (5), the ejector rod (10) is fixedly inserted with the circular plate (11), the spring (12) is positioned between the annular sealing plate (8) and the circular plate (11), and the upper and lower ends of the spring (12) are respectively and fixedly connected with the annular sealing plate (8) and the circular plate (11), spring (12) are established with ejector pin (10) activity cover, the setting of circulation drive assembly is in the below that adds pipe (5), and puddler (4) accessible drive assembly drives ejector pin (10) vertical removal, a plurality of round holes that are annular evenly distributed around ejector pin (10) have been seted up to the upper end of plectane (11).

3. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 2, characterized in that: the circulating driving assembly comprises a transmission rod, a cam (13), a first bevel gear (14) and a second bevel gear (15), the transmission rod is transversely arranged below the ejector rod (10), one end, far away from the stirring rod (4), of the transmission rod is rotatably connected with the side wall of the mixing tank (1) through a first bearing, the cam (13) is located below the ejector rod (10) and fixedly connected with the transmission rod in an inserting mode, the upper side of the cam (13) abuts against the lower end of the ejector rod (10), the right end of the transmission rod is fixedly connected with the first bevel gear (14), the second bevel gear (15) is fixedly connected with the upper portion of the rod wall of the stirring rod (4) in an inserting mode, and the first bevel gear (14) is connected with the second bevel gear (15) in an engaging mode.

4. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 3, characterized in that: the transmission rod comprises a first rotating rod (16) and a second rotating rod (17), the first rotating rod (16) is rotatably connected with the side wall of the mixing tank (1) through a first bearing and fixedly inserted into the cam (13), the second rotating rod (17) is fixedly inserted into the first bevel gear (14), and the first rotating rod (16) and the second rotating rod (17) are connected with each other through an overrunning clutch (31).

5. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 4, characterized in that: rabbling mechanism includes servo motor (18), puddler (4), reciprocal subassembly and two sets of stirring leaf (19) from top to bottom, servo motor (18) are fixed to be set up at the upper end middle part of blending tank (1), the upper end of puddler (4) is passed through the second bearing and is rotated with the last lateral wall of blending tank (1) and is connected and extend to the top outside of blending tank (1), the upper end fixed connection of shaft coupling and puddler (4) is passed through to the output of servo motor (18), reciprocal subassembly setting is on the pole wall of puddler (4) from top to bottom, and two equal fixedly connected with montant (21) in two lead screw nut (20) opposite both sides in the reciprocal subassembly from top to bottom, two the opposite both sides pole wall of montant (21) respectively with two sets of stirring leaf (19) fixed connection.

6. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 5, characterized in that: the up-down reciprocating assembly comprises a circular ring (22), an annular rack (23), two straight gears (24), two reciprocating screw rods (25) and two screw rod nuts (20), wherein the reciprocating screw rods (25) are vertically arranged on the left side and the right side of the stirring rod (4) respectively, each screw rod wall of each reciprocating screw rod (25) is provided with a fixing block (26) at two ends and is connected with the fixing block (26) through a third bearing in a rotating manner, the fixing blocks (26) are fixedly connected with the screw rod walls of the stirring rod (4), the screw rod nuts (20) are respectively sleeved with the screw rod walls of the two reciprocating screw rods (25) in a matching and moving manner, a sleeve (27) is fixedly connected between the two screw rod nuts (20), the sleeve (27) is sleeved with the stirring rod (4) in a sliding manner, the upper ends of the reciprocating screw rods (25) pass through fourth bearings, pass through second bevel gears (15) and are respectively fixedly connected with the two straight gears (24), ring (22) and mixing tank (1) go up inside wall middle part fixed connection, annular rack (23) are fixed to be set up in ring (22), two straight-teeth gear (24) all are located the inside of annular rack (23) and are connected with annular rack (23) meshing.

7. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 6, characterized in that: both sides all are provided with the arc around puddler (4) and scrape pole (28), two the arc scrapes pole (28) and is slope setting and about puddler (4) central symmetry, and two arcs scrape pole (28) and offset and can slide with two inside walls in the front and back of blending tank (1) respectively, two pole (28) are all scraped to the arc through connecting rod (29) and puddler (4) fixed connection.

8. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 7, characterized in that: every group the quantity of stirring leaf (19) sets up to four, four stirring leaf (19) is from last to lower align to grid in proper order.

9. The raw material mixing device for preparing heat-resistant flame-retardant polystyrene according to claim 8, characterized in that: and a sealing sleeve (30) is fixedly sleeved on the outer surface of the plugging ball (9).

10. A process for mixing raw materials for the production of heat-resistant flame-retardant polystyrene, comprising the mixing apparatus according to any one of claims 1 to 9, characterized in that: further comprising the steps of:

s1, preparing, namely introducing the preparation raw materials to be mixed into a mixing tank (1) through a feed hopper, and introducing an initiator and a transfer agent into a first reagent box (2) and a second reagent box (3) respectively;

s2, mixing preparation, starting a servo motor (18), enabling the servo motor (18) to rotate in the positive direction, enabling the servo motor (18) to drive a stirring rod (4) to rotate, enabling the stirring rod (4) to drive two reciprocating screw rods (25) to rotate around the stirring rod (4) through two fixing blocks (26), enabling the two reciprocating screw rods (25) to drive two vertical rods (21) to rotate around the stirring rod (4) through two screw rod nuts (20), enabling the two vertical rods (21) to drive two stirring blades (19) to rotate around the stirring rod (4), enabling the two screw rod nuts (20) to drive two straight gears (24) to rotate around the stirring rod (4) inside an annular rack (23), enabling the two straight gears (24) to respectively drive the two reciprocating screw rods (25) to rotate, enabling the two screw rod nuts (20) to simultaneously reciprocate up and down through the two screw rod nuts (20) respectively drive the two groups of stirring blades (19) to reciprocate up and down through the two vertical rods (21), the raw materials in the mixing tank (1) can be fully stirred and mixed to prepare a polystyrene polymer;

the stirring rod (4) rotates and drives the second bevel gear (15) to rotate, the second bevel gear (15) simultaneously drives the two first bevel gears (14) to rotate, the two first bevel gears (14) respectively drive the two second rotating rods (17) to rotate, the two second rotating rods (17) respectively drive the two first rotating rods (16) to rotate through the two overrunning clutches (), the two first rotating rods (16) respectively drive the two cams (13) to rotate, the first cams (13) can intermittently jack the ejector rod (10) upwards, the ejector rod (10) intermittently drives the plugging ball (9) to move upwards, meanwhile, the spring (12) continuously applies downward elastic force to the circular plate (11), the circular plate (11) continuously applies downward thrust to the ejector rod (10), so that the ejector rod (10) and the plugging ball (9) move up and down in a reciprocating mode, and then the plugging ball (9) and the annular sealing plate (8) can be opened and closed in a circulating mode, the initiator and the transfer agent can be automatically fed intermittently;

s3, automatically discharging, opening a control valve on the discharging pipe (6), discharging the polystyrene after mixing preparation through the discharging pipe (6), meanwhile, the servo motor (18) is rotated reversely, the servo motor (18) rotates reversely to drive the stirring rod (4) to drive the two groups of stirring blades (19) to rotate and move up and down in a reciprocating manner, the stirring rod (4) also drives the two arc-shaped scraping rods (28) to rotate through the two connecting rods (29), the two arc-shaped scraping rods (28) scrape the residual polystyrene polymer on the inner wall of the mixing tank (1) downwards, so that the mixing tank (1) is rapidly discharged, and the polystyrene residue in the mixing tank (1) is reduced, when the stirring rod (4) rotates reversely, the two first bevel gears (14) drive the two second rotating rods (17) to rotate reversely, so that the two first rotary levers (16) do not rotate, i.e. the addition of initiator and transfer agent to the mixing tank (1) can be stopped.