CN116747541A

CN116747541A - Devolatilization device for processing lithium polymer

Info

Publication number: CN116747541A
Application number: CN202311056482.8A
Authority: CN
Inventors: 张冠宇; 雷桑; 陈景俊; 张艳君; 李学然; 张晨阳; 何珍; 胡玉普
Original assignee: Tianjin Junyu Technology Co ltd
Current assignee: Tianjin Junyu Technology Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2023-09-15
Anticipated expiration: 2043-08-22
Also published as: CN116747541B

Abstract

The invention discloses a devolatilization device for processing lithium polymers, which belongs to the field of polymers and comprises a bracket, wherein a tank body is fixedly arranged on the bracket, one end of the tank body is fixedly provided with a driving mechanism, a primary devolatilization device and a secondary devolatilization device are arranged in the tank body, the primary devolatilization device and the secondary devolatilization device are both connected with the driving mechanism, the feeding directions of the primary devolatilization device and the secondary devolatilization device are opposite, a feeding mechanism is rotatably arranged at the other end of the tank body, the feeding mechanism is connected with the driving mechanism through a transmission shaft, and the feeding directions of the primary devolatilization device and the secondary devolatilization device are opposite. Two groups of screws are arranged in the tank body, the two screw devolatilization devices are connected with each other to realize continuous production, and the two screw devolatilization devices are heated simultaneously by introducing steam into the tank body, so that the energy consumption is reduced; the material transferring between the two devolatilization devices can be realized through the feeding mechanism, so that the mutual influence between the two devolatilization devices is avoided, and the working efficiency is improved.

Description

Devolatilization device for processing lithium polymer

Technical Field

The invention belongs to the field of polymers, and particularly relates to a devolatilization device for processing lithium polymers.

Background

The lithium-based polymer is a polymer obtained by anionic polymerization of a styrene-based monomer and an active conjugated olefin such as butadiene, isoprene, and piperylene, and is a polymer obtained by anionic polymerization of an alkyl lithium, and a large number of industrial products are produced, and among these, styrene-butadiene-styrene triblock copolymer SBS, styrene-isoprene-styrene triblock copolymer SIS, hydrogenated products thereof, solution polymerized styrene-butadiene rubber, and the like are most typical.

The main solvent of the existing lithium polymerization process is cyclohexane (such as a mixed solution of cyclohexane and n-hexane), and the devolatilization process of the lithium polymer is wet devolatilization. At present, in the process of preparing the lithium polymer, two devolatilization processes are required, and the vacuum degree required for each devolatilization is different, and generally, the vacuum degree for the secondary devolatilization is greater than the vacuum degree for the primary devolatilization. In the prior art, the lithium polymer is produced by arranging two devolatilization devices, controlling the two devolatilization devices to respectively control different vacuum degrees to perform devolatilization processing, so that the two devolatilization devices are required to be heated during production, materials are required to be transferred to a second devolatilization device for secondary devolatilization through a conveying device after primary devolatilization in a first devolatilization device, the temperature of the materials can be reduced during transfer, and the materials are required to be heated again during secondary devolatilization, so that energy consumption is increased, and the production cost of enterprises is increased.

It is therefore desirable to design a devolatilizer for lithium-based polymer processing to address these issues.

Disclosure of Invention

The invention aims to provide a devolatilization device for processing a lithium polymer, which is particularly suitable for the production and devolatilization of the lithium polymer.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a devolatilization device for lithium system polymer processing, includes the support, fixedly is provided with the jar body on the support, the fixed actuating mechanism that is provided with of one end of jar body, jar internal one-level devolatilization device and the second grade devolatilization device of being provided with, one-level devolatilization device with the second grade devolatilization device all with actuating mechanism links to each other, just one-level devolatilization device with the pay-off opposite direction of second grade devolatilization device the other end of jar body rotates and is provided with feeding mechanism, feeding mechanism pass through the transmission shaft with actuating mechanism links to each other, just feeding mechanism is used for with the material transport of one-level devolatilization device output arrives the input of second grade devolatilization device jar body with one-level devolatilization device with still be provided with the heating chamber between the second grade devolatilization device.

Preferably, the first-stage devolatilizing device and the second-stage devolatilizing device comprise mounting bodies fixedly arranged in the tank body, a first mounting hole and a second mounting hole are formed in the mounting bodies, a first screw rod group is rotationally arranged in the first mounting hole, a second screw rod group is rotationally arranged in the second mounting hole, a first volatilizing pipe and a second volatilizing pipe are fixedly arranged on the tank body, the first volatilizing pipe penetrates through the side wall of the tank body and then is communicated with the first mounting hole, the second volatilizing pipe penetrates through the side wall of the tank body and then is communicated with the second mounting hole, the first screw rod group and the first volatilizing pipe jointly form the first-stage volatilizing device, and the second mounting hole, the second screw rod group and the second volatilizing pipe jointly form the second-stage volatilizing device.

So set up, set up two sets of devolatilization devices in the jar internal to make two sets of devolatilization devices can realize the transport of material under the condition of mutually noninterfere, share a jar body heating moreover can reduce the waste of energy.

Preferably, the driving mechanism comprises a transmission gear box fixedly arranged on the tank body, the primary devolatilizing device, the secondary devolatilizing device and the transmission shaft are connected with the output end of the transmission gear box, a speed reducer is arranged at the input end of the transmission gear box, the output end of the speed reducer is connected with the input end of the transmission gear box, a driving motor is arranged at the input end of the speed reducer, and the output end of the driving motor is connected with the input end of the speed reducer.

So set up, can provide power for equipment through driving motor, can reduce the rotational speed and increase moment of torsion through the speed reducer, drive gear box can realize the transmission of power between first screw rod group, second screw rod group and the transmission shaft.

Preferably, the feeding mechanism comprises a mounting block arranged in the tank body and an end cover arranged at the end part of the tank body, the mounting block is fixedly connected with the mounting block, the second mounting hole penetrates through the mounting block, a storage bin is arranged on the mounting block, the storage bin is communicated with the first mounting hole, a feeding plate is arranged in the storage bin in a sliding mode, a limiting boss is fixedly arranged on the end cover, a limiting groove is formed in the limiting boss, a driving groove is formed in the inner wall of the limiting groove, a rotating body is further arranged between the limiting boss and the mounting block in a rotating mode, the rotating body is respectively in rotary joint with the mounting block and the limiting boss, one end of the transmission shaft is fixedly connected with the rotating body, the other end of the transmission shaft is connected with the driving mechanism, a plurality of feeding grooves are formed in the rotating body, push plates are fixedly arranged on the push plates, free ends of the push rods penetrate through the rotating body and then extend into the driving groove, and are arranged in the driving groove, and the driving groove is sequentially communicated with the driving groove, and the driving groove is fixedly arranged in the driving groove.

So set up, can realize the transportation of material under the circumstances that does not influence two devolatilization device negative pressure environment, ensure that equipment can continuous production, heat loss when having reduced the material transportation has improved efficiency, reduction in production cost.

Preferably, the feeding mechanism is further provided with a feeding assembly, the feeding assembly comprises a driving cavity and a sliding cavity which are arranged on the mounting block, and a switch groove which is arranged on the rotating body, a piston is arranged in the driving cavity, a connecting rod is fixedly arranged on the piston, the free end of the connecting rod is fixedly connected with the feeding plate, a reversing piece and a spring are slidably arranged in the sliding cavity, a connecting pipe, a feeding air pipe and a resetting air pipe are further arranged on the sliding cavity, the free end of the connecting pipe is connected with the driving cavity, the free end of the feeding air pipe is connected with the heating cavity, and the free end of the resetting air pipe is connected with the first volatilizing pipe.

So set up, utilize the reversing piece to combine negative pressure and the steam that produces when devolatilizing to drive the delivery plate and remove, improved the transportation efficiency of material.

Preferably, the tank body is further provided with a supporting plate and a plurality of reinforcing plates, and the supporting plate and the reinforcing plates are fixedly connected with the inner wall of the tank body and the installation body.

So set up, can consolidate jar body and installation body.

Preferably, the tank body is fixedly provided with a feeding pipe and a discharging pipe, the feeding pipe is communicated with the first mounting hole and is located at the input end of the first screw rod group, and the discharging pipe is communicated with the second mounting hole and is located at the output end of the second screw rod group.

The arrangement ensures the input and output of materials.

Preferably, a heat circulation pipe is fixedly arranged on the tank body, and the heat circulation pipe is communicated with the heating cavity.

So set up, can heat the jar internal, make and take off the effect of volatilizing better.

Preferably, the reversing piece comprises a mounting rod, a sealing ring and a sealing block, the sealing block is fixedly arranged at one end of the mounting rod, the sealing ring is fixedly sleeved on the mounting rod, the other end of the mounting rod penetrates out of the sliding cavity, and when the rotating body rotates to the position that the switch groove is aligned with the end part of the mounting rod, the spring pushes the reversing piece to move, so that the other end of the mounting rod enters the switch groove.

So set up, can make up different pipelines through the cooperation of sealing block and sealing ring, can drive the removal of charge plate through negative pressure and steam.

Preferably, the cross section of the switch groove is semicircular.

So set up, the roll-in and the roll-out of the installation pole tip of being convenient for.

The invention has the advantages and positive effects that:

according to the invention, two groups of screws with opposite material conveying directions are arranged in the tank body, and the two groups of screws are connected, so that the series connection of the two screw devolatilization devices is realized, the two screw devolatilization devices can be heated simultaneously by introducing high-temperature and high-pressure steam into the heating bin in the tank body, and the heating cavity between the tank body and the installation body is separated by the supporting plate and the reinforcing plate, so that the flow direction of the steam can be controlled, the temperature is conveniently controlled, and the energy consumption is reduced; the material transferring device has the advantages that the material transferring between the two devolatilization devices can be realized through the feeding mechanism, the mutual influence between the two devolatilization devices can be avoided, the material transferring flow is shortened, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram showing the connection of a lithium-based polymer production facility;

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

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

FIG. 4 is an exploded view of the feed structure of the present invention;

FIG. 5 is a schematic view in horizontal section taken along line I-I in FIG. 3;

FIG. 6 is a schematic cross-sectional view taken along line II-II in FIG. 5;

FIG. 7 is a schematic view of the position of the rotary body and the feed chute and the switch chute of the present invention;

FIG. 8 is a schematic view of the end cap and spacing bump structure of the present invention;

FIG. 9 is a schematic diagram showing the engagement of the rotating body with the limit grooves and the drive grooves on the limit protrusions;

fig. 10 is a schematic diagram of a reversing device and a feeding driving structure of the present invention.

The reference numerals are explained as follows:

1. a flash tank; 2. a devolatilization device; 201. a bracket; 202. a tank body; 203. a driving motor; 204. a speed reducer; 205. a transmission gear box; 206. a mounting body; 207. a first mounting hole; 208. a first screw set; 209. a second mounting hole; 210. a second screw set; 211. a transmission shaft; 212. a support plate; 213. a reinforcing plate; 214. a first volatilization tube; 215. a second volatilization tube; 216. a rotating body; 217. a feed chute; 218. a push plate; 219. a push rod; 220. a driving block; 221. a driving groove; 222. an end cap; 223. a discharge pipe; 224. a sealing plate; 225. a feed pipe; 226. a heat circulation pipe; 227. a mounting block; 228. a limit protrusion; 229. a limit groove; 230. a switch groove; 231. a reversing piece; 2311. a mounting rod; 2312. a seal ring; 2313. a sealing block; 232. a piston; 233. a storage bin; 234. a feeding plate; 235. a connecting rod; 236. a connecting pipe; 237. a drive chamber; 238. a sliding chamber; 239. a spring; 240. a feeding air pipe; 241. resetting the trachea; 3. a conveying device; 4. a granulator.

Detailed Description

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention is further described below with reference to the accompanying drawings:

example 1: as shown in fig. 1-10, a devolatilization device for processing lithium-based polymer comprises a support 201, a tank 202 is fixedly arranged on the support 201, a driving mechanism is fixedly arranged at one end of the tank 202, a primary devolatilization device and a secondary devolatilization device are arranged in the tank 202, the primary devolatilization device and the secondary devolatilization device are connected with the driving mechanism, the feeding directions of the primary devolatilization device and the secondary devolatilization device are opposite, a feeding mechanism is rotatably arranged at the other end of the tank 202, the feeding mechanism is connected with the driving mechanism through a transmission shaft 211, the feeding mechanism is used for conveying materials at the output end of the primary devolatilization device to the input end of the secondary devolatilization device, and a heating cavity is further arranged between the tank 202 and the primary devolatilization device and the secondary devolatilization device.

As shown in fig. 4 and 6, the first-stage devolatilization device and the second-stage devolatilization device each include an installation body 206 fixedly disposed in the tank 202, a first installation hole 207 and a second installation hole 209 are disposed on the installation body 206, a first screw rod group 208 is disposed in the first installation hole 207 in a rotating manner, a second screw rod group 210 is disposed in the second installation hole 209 in a rotating manner, a first volatilization tube 214 and a second volatilization tube 215 are also fixedly disposed on the tank 202, the first volatilization tube 214 penetrates through the side wall of the tank 202 and then is communicated with the first installation hole 207, the second volatilization tube 215 penetrates through the side wall of the tank 202 and then is communicated with the second installation hole 209, the first installation hole 207, the first screw rod group 208 and the first volatilization tube 214 jointly form the first-stage devolatilization device, and the second installation hole 209, the second screw rod group 210 and the second volatilization tube 215 jointly form the second-stage devolatilization device, so that the two groups of devolatilization devices are disposed in the tank 202, and the two groups of devolatilization devices can realize material conveying under the condition of no interference, and the waste of heat energy of the tank 202 can be reduced.

As shown in fig. 2 and 3, the driving mechanism includes a transmission gear box 205 fixedly disposed on the tank 202, the primary devolatilizing device, the secondary devolatilizing device and the transmission shaft 211 are all connected with the output end of the transmission gear box 205, a speed reducer 204 is disposed at the input end of the transmission gear box 205, the output end of the speed reducer 204 is connected with the input end of the transmission gear box 205, a driving motor 203 is disposed at the input end of the speed reducer 204, the output end of the driving motor 203 is connected with the input end of the speed reducer 204, and thus the driving motor 203 can supply power to the equipment, the rotation speed can be reduced and the torque can be increased through the speed reducer 204, and the transmission gear box 205 can realize the transmission of power among the first screw set 208, the second screw set 210 and the transmission shaft 211.

As shown in fig. 4, fig. 7, fig. 8 and fig. 9, the feeding mechanism includes a mounting block 227 disposed in the tank 202 and an end cap 222 mounted at the end of the tank 202, the mounting block 227 is fixedly connected with the tank 202, the mounting block 206 is fixedly connected with the mounting block 227, and the second mounting hole 209 penetrates through the mounting block 227, a storage bin 233 is disposed on the mounting block 227, the storage bin 233 is mutually communicated with the first mounting hole 207, a feeding plate 234 is disposed in the storage bin 233 in a sliding manner, a limiting boss 228 is fixedly disposed on the end cap 222, a limiting groove 229 is disposed on the limiting boss 228, a driving groove 221 is disposed on the inner wall of the limiting groove 229, a rotating body 216 is further rotatably disposed between the limiting boss 228 and the mounting block 227, the rotating body 216 is respectively in rotary joint with the mounting block 227 and the limiting boss 228, one end of the transmission shaft 211 is fixedly connected with the rotating body 216, the other end is connected with the driving mechanism, a plurality of feeding grooves 217 are disposed on the rotating body 216, push plates 218 are fixedly disposed on the pushing plates 218, free ends of the pushing rods 219 penetrate through the rotating body 216 and extend into the limiting groove 229, and are disposed in the driving grooves 220, and are disposed at the free ends 220 of the driving grooves 220 in the driving groove, and are not in the driving groove 220, and are sequentially in the driving groove 220 is in the driving groove, and the driving groove is sequentially reduced in the driving groove is capable of continuously, and the driving groove is continuously driven, and the driving groove is continuously lost, and the driving device is sequentially can be reduced.

As shown in fig. 10, the feeding mechanism is further provided with a feeding assembly, the feeding assembly includes a driving chamber 237 and a sliding chamber 238 which are disposed on the mounting block 227, and a switch slot 230 disposed on the rotating body 216, a piston 232 is disposed in the driving chamber 237, a connecting rod 235 is fixedly disposed on the piston 232, a free end of the connecting rod 235 is fixedly connected with the feeding plate 234, a reversing member 231 and a spring 239 are slidably disposed in the sliding chamber 238, a connecting pipe 236, a feeding air pipe 240 and a resetting air pipe 241 are further disposed in the sliding chamber 238, the free end of the connecting pipe 236 is connected with the driving chamber 237, the free end of the feeding air pipe 240 is connected with the heating chamber, and the free end of the resetting air pipe 241 is connected with the first volatilizing pipe 214.

As shown in fig. 5 and 6, a support plate 212 and a plurality of reinforcing plates 213 are further disposed in the tank 202, and the support plate 212 and the reinforcing plates 213 are fixedly connected with the inner wall of the tank 202 and the mounting body 206, so that the tank 202 and the mounting body 206 can be reinforced.

As shown in fig. 2 and 3, a feeding pipe 225 and a discharging pipe 223 are fixedly arranged on the tank 202, the feeding pipe 225 is communicated with the first mounting hole 207 and is positioned at the input end of the first screw rod group 208, the discharging pipe 223 is communicated with the second mounting hole 209 and is positioned at the output end of the second screw rod group 210, and thus, the input and output of materials are ensured.

As shown in fig. 3, a heat circulation pipe 226 is fixedly arranged on the tank 202, and the heat circulation pipe 226 is communicated with the heating cavity, so that the tank 202 can be heated, and the devolatilization effect is better.

As shown in fig. 10, the reversing member 231 includes a mounting rod 2311, a sealing ring 2312 and a sealing block 2313, the sealing block 2313 is fixedly disposed at one end of the mounting rod 2311, the sealing ring 2312 is fixedly sleeved on the mounting rod 2311, the other end of the mounting rod 2311 penetrates out of the sliding cavity 238, when the rotating body 216 rotates to align the switch groove 230 with the end of the mounting rod 2311, the spring 239 pushes the reversing member 231 to move, the other end of the mounting rod 2311 enters the switch groove 230, and thus different pipelines can be combined through the cooperation of the sealing block 2313 and the sealing ring 2312, and the feeding plate 234 can be driven to move by negative pressure and steam.

Specifically, the switch groove 230 has a semicircular cross section, so that the end of the installation bar 2311 can be easily slid in and out.

The working procedure of this embodiment is:

the first volatilizing pipe 214 and the second volatilizing pipe 215 are connected with external vacuum equipment, then a vacuum system is started, air in the equipment is extracted by the vacuum system, nitrogen is filled into the equipment, the air in the equipment is replaced by the nitrogen, and the input of the nitrogen is closed after the oxygen concentration in the equipment is lower than the dangerous concentration; starting a driving motor 203 of the devolatilizing device 2, and keeping the driving motor 203 running at a low speed, wherein the driving motor 203 drives a transmission gear box 205 to rotate through a speed reducer 204, and the transmission gear box 205 drives a first screw rod group 208, a second screw rod group 210 and a transmission shaft 211 to rotate at a low speed after rotating;

steam is filled into the tank 202 through the heat circulation pipe 226 to heat the inside of the tank 202, so that the whole devolatilizer 2 reaches the temperature to meet the temperature requirement during devolatilization;

finally, the material in the flash tank 1 is sent into the first mounting hole 207 in the tank 202 from the feeding pipe 225, when the material enters the equipment along the feeding pipe 225, the processing environment temperature and the vacuum degree of the equipment are required to be adjusted according to the process requirements, negative pressure of-25 kPa is generated in the first mounting hole 207, negative pressure of-50 kPa is generated in the second mounting 209 pipe, then high-temperature steam is led into the heating cavity between the tank 202 and the mounting body 206 through the heat circulation pipe 226, and the steam flows out of the second mounting hole 209 and then flows out of the first mounting hole 207, so that the temperature in the second mounting hole 209 is ensured to be higher than the temperature in the first mounting hole 207, and the adjustment of the production environment temperature in the equipment is achieved through controlling the flow speed and the steam quantity of the steam.

After the material enters the first mounting hole 207, the first screw rod group 208 in the first mounting hole 207 is in a rotating state under the driving of the driving motor 203, so that the material entering the first mounting hole 207 can move under the driving of the rotating first screw rod group 208, and the devolatilization process is completed in the moving process, volatile components generated by the devolatilization process can be pumped by the vacuum equipment through the first devolatilization pipe 214, when the material moves to the limit position along the first mounting hole 207 under the driving of the first screw rod group 208, the material enters the storage bin 233, at the moment, the feeding mechanism is in an initial state, the mounting rod 2311 can be pushed into the sliding cavity 238 under the initial state due to the rotating body 216 and the mounting block 227 are rotationally attached together, the spring 239 can be compressed, the sealing ring on the mounting rod 2311 can seal the feeding air pipe 240, and the sealing block 2313 can release the reset air pipe 241, the reset air pipe 241, the sliding cavity 238 and the connecting pipe 236 are communicated with the driving cavity 237, the reset air pipe 241 is connected with the first volatilizing pipe 214, at this time, the first volatilizing pipe 214 generates negative pressure under the action of vacuum equipment, so that the air in the driving cavity 237 can be pumped away, the piston 232 moves inwards and drives the feeding plate 234 to move through the connecting rod 235, when the rotating body 216 rotates under the driving of the transmission shaft 211 to the feeding groove 217 to be aligned and connected with the storage bin 233, the switch groove 230 is aligned with the end part of the mounting rod 2311, at this time, the spring 239 stretches, the spring 239 pushes the reversing piece 231 to move in the sliding cavity 238 when stretching, the end part of the mounting rod 2311 enters the switch groove 230 on the rotating body 216 when the reversing piece 231 moves, at the same time, the sealing block 2313 seals the reset air pipe 241, and the sealing ring 2312 releases the feeding air pipe 240, at this time the feeding air pipe 240 is aligned and connected with the storage bin 233, the sliding cavity 238, the connecting pipe 236 and the driving cavity 237 are communicated, the feeding air pipe 240 is connected with the heating cavity, and the heating cavity is filled with steam, so that steam flows through the feeding air pipe 240, the sliding cavity 238 and the connecting pipe 236 in sequence and then enters the driving cavity 237, steam entering the driving cavity 237 pushes the piston 232 to move, the piston 232 moves to push the feeding plate 234 to move through airing, the feeding plate 234 moves to push materials entering the storage bin 233 into the feeding groove 217, the end of the connecting rod 235 is extruded by the switch groove 230 along with the continuous rotation of the rotating body 216, the mounting rod 2311 enters the sliding cavity 238 again, at the moment, the sealing ring 2312 seals the feeding air pipe 240 again, the sealing block 2313 releases the resetting air pipe 241, the sliding cavity 238, the connecting pipe 236 and the driving cavity 237 are communicated, and steam in the driving cavity 237 is pumped away, and the piston 232 drives the feeding plate 234 to move inwards and finally reset through the connecting rod 235.

When the feeding groove 217 on the rotating body 216 rotates to be aligned with the second mounting hole 209, the driving groove 221 pushes the driving block 220 to move, when the starting block moves, the push plate 218 is pushed to move through the push rod 219, after the push plate 218 moves, the material in the feeding groove 217 is pushed into the second mounting hole 209, the material moves through the rotation of the second screw rod group 210 in the second mounting hole 209, secondary devolatilization is performed in the moving process, the devolatilized material is extruded from the discharging pipe 223, and the extruded material is conveyed by the conveying device 3 and enters the granulator 4 for granulation.

And because rotator 216 and installation piece 227 are rotatory laminating together, so rotator 216 can seal second mounting hole 209 and second mounting hole 209, avoids negative pressure environment to influence each other, along with and rotator 216's rotation drive groove 221 can drive the drive piece 220 again and slide, makes push rod 219 drive push pedal 218 slide into feed chute 217 to carry out the transportation of material once more.

The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.

Claims

1. The utility model provides a devolatilization device for lithium system polymer processing, includes support (201), fixedly on support (201) be provided with jar body (202), its characterized in that: one end of the tank body (202) is fixedly provided with a driving mechanism, a first-stage devolatilization device and a second-stage devolatilization device are arranged in the tank body (202), the first-stage devolatilization device and the second-stage devolatilization device are connected with the driving mechanism, the feeding direction of the first-stage devolatilization device is opposite to that of the second-stage devolatilization device, a feeding mechanism is rotationally arranged at the other end of the tank body (202), the feeding mechanism is connected with the driving mechanism through a transmission shaft (211), and the feeding mechanism is used for transporting materials at the output end of the first-stage devolatilization device to the input end of the second-stage devolatilization device, and a heating cavity is further arranged between the tank body (202) and the first-stage devolatilization device and the second-stage devolatilization device.

2. The devolatilizer for lithium-based polymer processing as defined in claim 1, wherein: the one-level devolatilization device and the two-level devolatilization device comprise a mounting body (206) fixedly arranged in the tank body (202), a first mounting hole (207) and a second mounting hole (209) are formed in the mounting body (206), a first screw rod group (208) is arranged in the first mounting hole (207) in a rotating mode, a second screw rod group (210) is arranged in the second mounting hole (209) in a rotating mode, a first volatilization tube (214) and a second volatilization tube (215) are fixedly arranged on the tank body (202), the first volatilization tube (214) penetrates through the side wall of the tank body (202) and then is communicated with the first mounting hole (207), the second volatilization tube (215) penetrates through the side wall of the tank body (202) and then is communicated with the second mounting hole (209), the first mounting hole (207), the first screw rod group (208) and the first volatilization tube (214) jointly form the one-level devolatilization device, and the second volatilization tube (210) jointly form the second volatilization tube (209).

3. The devolatilizer for lithium-based polymer processing as defined in claim 1, wherein: the driving mechanism comprises a transmission gear box (205) fixedly arranged on the tank body (202), the primary devolatilizing device, the secondary devolatilizing device and the transmission shaft (211) are connected with the output end of the transmission gear box (205), a speed reducer (204) is arranged at the input end of the transmission gear box (205), the output end of the speed reducer (204) is connected with the input end of the transmission gear box (205), a driving motor (203) is arranged at the input end of the speed reducer (204), and the output end of the driving motor (203) is connected with the input end of the speed reducer (204).

4. The devolatilizer for lithium-based polymer processing as defined in claim 2, wherein: the feeding mechanism comprises a mounting block (227) arranged in the tank body (202) and an end cover (222) arranged at the end part of the tank body (202), wherein the mounting block (227) is fixedly connected with the tank body (202), the mounting body (206) is fixedly connected with the mounting block (227), the second mounting hole (209) penetrates through the mounting block (227), a storage bin (233) is arranged on the mounting block (227), the storage bin (233) is communicated with the first mounting hole (207), a feeding plate (234) is arranged in the storage bin (233) in a sliding manner, a limit protrusion (228) is fixedly arranged on the end cover (222), a limit groove (229) is formed in the limit protrusion (228), a rotating body (216) is further arranged between the limit protrusion (228) and the mounting block (227) in a rotating manner, the rotating body (216) is respectively connected with the mounting block (217) and the protrusion (228), a plurality of rotating bodies (216) are connected with one end of the feeding plate (218) in a plurality of driving mechanism, push pedal (218) are last fixed be provided with push rod (219), the free end of push rod (219) passes in behind rotator (216) stretch into in spacing groove (229), and the free end of push rod (219) is fixed be provided with drive piece (220), drive piece (220) are located in drive groove (221), works as behind rotator (216) rotation, feed chute (217) respectively with stock bin (233) with second mounting hole (209) intercommunication, just drive piece (220) are followed drive groove (221) are slided.

5. The devolatilizer for lithium based polymer processing as defined in claim 4, wherein: the feeding mechanism is further provided with a feeding assembly, the feeding assembly comprises a driving cavity (237) and a sliding cavity (238) which are arranged on the mounting block (227) and a switch groove (230) which is arranged on the rotating body (216), a piston (232) is arranged in the driving cavity (237), a connecting rod (235) is fixedly arranged on the piston (232), the free end of the connecting rod (235) is fixedly connected with the feeding plate (234), a reversing piece (231) and a spring (239) are arranged in the sliding cavity (238) in a sliding mode, a connecting pipe (236), a feeding air pipe (240) and a resetting air pipe (241) are further arranged on the sliding cavity (238), the free end of the connecting pipe (236) is connected with the driving cavity (237), the free end of the feeding air pipe (240) is connected with the heating cavity, and the free end of the resetting air pipe (241) is connected with the first volatilizing pipe (214).

6. The devolatilizer for lithium-based polymer processing as defined in claim 1, wherein: still be provided with backup pad (212) and a plurality of reinforcing plate (213) in jar body (202), backup pad (212) and a plurality of reinforcing plate (213) all with jar body (202) inner wall and installation body (206) fixed connection.

7. The devolatilizer for lithium-based polymer processing as defined in claim 2, wherein: the tank body (202) is fixedly provided with a feeding pipe (225) and a discharging pipe (223), the feeding pipe (225) is communicated with the first mounting hole (207) and is located at the input end of the first screw rod group (208), and the discharging pipe (223) is communicated with the second mounting hole (209) and is located at the output end of the second screw rod group (210).

8. The devolatilizer for lithium-based polymer processing as defined in claim 1, wherein: a heat circulation pipe (226) is fixedly arranged on the tank body (202), and the heat circulation pipe (226) is communicated with the heating cavity.

9. The devolatilizer for lithium based polymer processing as defined in claim 5, wherein: the reversing piece (231) comprises a mounting rod (2311), a sealing ring (2312) and a sealing block (2313), the sealing block (2313) is fixedly arranged at one end of the mounting rod (2311), the sealing ring (2312) is fixedly sleeved on the mounting rod (2311), the other end of the mounting rod (2311) penetrates out of the sliding cavity (238), and when the rotating body (216) rotates to the position where the switch groove (230) is aligned with the end of the mounting rod (2311), the spring (239) pushes the reversing piece (231) to move, so that the other end of the mounting rod (2311) enters the switch groove (230).

10. The devolatilizer for lithium-based polymer processing as defined in claim 9, wherein: the switch groove (230) is semicircular in cross section.