CN204820041U - Improvement type polycarbonate fuse -element pipeline system - Google Patents
Improvement type polycarbonate fuse -element pipeline system Download PDFInfo
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- CN204820041U CN204820041U CN201520504900.XU CN201520504900U CN204820041U CN 204820041 U CN204820041 U CN 204820041U CN 201520504900 U CN201520504900 U CN 201520504900U CN 204820041 U CN204820041 U CN 204820041U
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- heat exchanger
- melt
- static mixer
- screw extruder
- fuse
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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The utility model discloses an improvement type polycarbonate fuse -element pipeline system, including fuse -element delivery pump and screw extruder sprue and supplementary runner, the sprue includes in proper order by continuous fuse -element delivery pump, first heat exchanger, a static mixer and the screw extruder of pipeline, the control system who closes with the sprue is still opened including this reserve runner of control including in proper order by continuous fuse -element delivery pump, second heat exchanger, the 2nd static mixer and the screw extruder of pipeline to reserve runner to reduce the delivery pressure in pipeline exit, and then reduce the outlet pressure of polycarbonate fuse -element, make the fuse -element distribute and evenly improved the quality of product, and when the sprue takes place the problem, can automatic switch -over to supplementary runner.
Description
Technical field
The utility model relates to a kind of process pipe of melt transesterification polycarbonate synthesis device, and more particularly, it relates to modified form polycarbonate melt pipeline system.
Background technology
Use the device of melt transesterification technique polycarbonate synthesis finally all can by one section of melt Conveying pipeline by melt Conveying to the die head of pelletizing system and pelletizing become final products or be delivered to screw extruder to process.
But because polycarbonate melt viscosity is larger, carrying out conveying by pipeline must by a melt Conveying pump to its pressure-increasing unit, this easily causes at exit (being generally the die head of pelletizing system or the entrance of the screw extruder) pressure of melt pipe excessive, very easily affect the uniformity coefficient that melt distributes at die head, the uneven harmful effect of particle size is caused to pelletizing system or makes screw extruder by normal feeding, the normal operation of screw extruder can not be affected.
Meanwhile, there is turbulence effect in polymer melt in pipeline, and the melt flows state near the melt of tube wall and center is variant, and both situations of being heated are also different, and this easily causes final products uneven, reduces the quality of product.
In addition, the melt temperature transported out from reactor is generally 290-310 DEG C, and polycarbonate melt is very responsive to temperature, very easily degrades, have a strong impact on performance and the color of final products when at high temperature stopping for a long time.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide modified form polycarbonate melt pipeline system, can effectively reduce pipe outlet pressure, make melt even, and avoid melt to degrade in the duct, and by arranging auxiliary flow, further add the stability of system.
For achieving the above object, the utility model provides following technical scheme: a kind of modified form polycarbonate melt pipeline system, comprise melt Conveying pump and screw extruder, comprise sprue, described sprue comprises the melt Conveying pump be connected by conveyance conduit successively, First Heat Exchanger, first static mixer and screw extruder, also comprise reserve runner, described reserve runner comprises the melt Conveying pump be connected by conveyance conduit successively, second heat exchanger, second static mixer and screw extruder, also comprise and control the control system that this reserve runner is opened and sprue is closed, this control system comprises the temperature sensor be arranged on First Heat Exchanger, be arranged at the first automatic regulating valve between melt Conveying pump and First Heat Exchanger, be arranged at the second automatic regulating valve of melt Conveying pump and the second heat exchanger, described first automatic regulating valve and cut-offfing of the second automatic regulating valve are all controlled by temperature sensor.
As preferably, described sprue is also provided with alarm, this alarm is controlled by described temperature sensor.
As preferably, described conveyance conduit and melt Conveying pump, First Heat Exchanger, the first static mixer and screw extruder are all by Flange joint, and described conveyance conduit and melt Conveying pump, the second heat exchanger, the second static mixer and screw extruder all pass through Flange joint.
As preferably, distance between described melt Conveying pump and First Heat Exchanger or the second heat exchanger is 2 ~ 4m, distance between described First Heat Exchanger and the first static mixer is 1 ~ 3m, and the distance between described second heat exchanger and the second static mixer is 1 ~ 3m.
Compared with prior art, the utility model has the advantage of: during normal operating conditions, first automatic regulating valve is opened, second automatic regulating valve cuts out, i.e. sprue work, after First Heat Exchanger cooling, through the first static mixer, polycarbonate melt is heated evenly again, reduce polycarbonate melt temperature thus decrease the degraded of melt, reduce the output pressure in conveyance conduit exit, and then reduce the outlet pressure of polycarbonate melt, melt is evenly distributed improve the quality of product, and the damage reduced down-stream system, improve the service life of whole system, further by arranging auxiliary flow, when temperature after temperature sensor detects via First Heat Exchanger cooling is different from the preset value of setting, just control the first automatic regulating valve to close, second automatic regulating valve is opened, auxiliary flow is operated, prevents the polycarbonate melt of excessive temperature from degrading, or the too low polycarbonate melt of temperature makes flowing not smooth, and give the alarm, remind staff to make relative measure.
Accompanying drawing explanation
Fig. 1 is the pipe arrangement schematic diagram of the utility model modified form polycarbonate melt pipeline system embodiment.
Accompanying drawing illustrates: 1, melt Conveying pump; 21, First Heat Exchanger; 22, the second heat exchanger; 31, the first static mixer; 32, the second static mixer; 4, screw extruder; 5, temperature sensor; 6, alarm; 71, the first automatic regulating valve; 72, the second automatic regulating valve.
Detailed description of the invention
With reference to Fig. 1, the utility model modified form polycarbonate melt pipeline system embodiment is described further.
embodiment:
A kind of modified form polycarbonate melt pipeline system, comprise sprue: successively melt Conveying pump 1, First Heat Exchanger 21, first static mixer 31 and screw extruder 4 are all passed through Flange joint by conveyance conduit, auxiliary flow: successively melt Conveying pump 1, second heat exchanger 22, second static mixer 32 and screw extruder 4 are all passed through Flange joint by conveyance conduit, by flange, improve the efficiency that removes and installs and simple to operate.
In order to reduce conveyance conduit outlet pressure, distance between described melt Conveying pump 1 and First Heat Exchanger 21 or the second heat exchanger 22 is 2 ~ 4m, and the distance preferably between melt Conveying pump 1 and First Heat Exchanger 21 or the second heat exchanger 22 is 2m, distance between described First Heat Exchanger 21 and the first static mixer 31 is 1 ~ 3m, distance between preferred First Heat Exchanger 21 and the first static mixer 31 is 1m, distance between described second heat exchanger 22 and the second static mixer 32 is 1 ~ 3m, distance preferably between the second heat exchanger 22 and the second static mixer 32 is 1m.
Outlet pressure described in the utility model all refers to the pressure that static mixer 3 exports, i.e. the inlet pressure of screw extruder 4.
During normal operating conditions, first automatic regulating valve 71 is opened, second automatic regulating valve 72 cuts out, i.e. sprue work, after the first switching heat-exchanger 21 cools, through the first static mixer 31, polycarbonate melt is heated evenly again, reduce polycarbonate melt temperature thus decrease the degraded of melt, reduce the output pressure in conveyance conduit exit, and then reduce the outlet pressure of polycarbonate melt, melt is evenly distributed improve the quality of product, and the damage reduced down-stream system, improves the service life of whole system; Further by arranging auxiliary flow, when temperature after temperature sensor 5 detects via First Heat Exchanger 21 cooling is different from the preset value of setting, just control the first automatic regulating valve 71 to close, second automatic regulating valve 72 is opened, auxiliary flow is operated, prevents the polycarbonate melt of excessive temperature from degrading, or the too low polycarbonate melt of temperature makes flowing not smooth, and siren 6 is worked, remind staff to make relative measure.
comparing embodiment:
According to the modified form polycarbonate melt pipeline system removing First Heat Exchanger 21 described in embodiment and the first static mixer 31.
performance comparison:
At the polycarbonate melt feed-line that same length is 10m
| The polycarbonate melt pipeline system of embodiment | The polycarbonate melt pipeline system of comparing embodiment | |
| Outlet pressure | 20~65bar | 30~200bar |
Greatly reduced by the pipeline system middle outlet pressure that upper table is adding First Heat Exchanger 21 and the first static mixer 31, melt is evenly distributed improve the quality of product, and reduce the damage to down-stream system, improve the service life of whole system.
The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a modified form polycarbonate melt pipeline system, comprise melt Conveying pump and screw extruder, it is characterized in that, comprise sprue, described sprue comprises the melt Conveying pump be connected by conveyance conduit successively, First Heat Exchanger, first static mixer and screw extruder, also comprise reserve runner, described reserve runner comprises the melt Conveying pump be connected by conveyance conduit successively, second heat exchanger, second static mixer and screw extruder, also comprise and control the control system that this reserve runner is opened and sprue is closed, this control system comprises the temperature sensor be arranged on First Heat Exchanger, be arranged at the first automatic regulating valve between melt Conveying pump and First Heat Exchanger, be arranged at the second automatic regulating valve of melt Conveying pump and the second heat exchanger, described first automatic regulating valve and cut-offfing of the second automatic regulating valve are all controlled by temperature sensor.
2. modified form polycarbonate melt pipeline system according to claim 1, is characterized in that, described sprue is also provided with alarm, and this alarm is controlled by described temperature sensor.
3. modified form polycarbonate melt pipeline system according to claim 2, it is characterized in that, described conveyance conduit and melt Conveying pump, First Heat Exchanger, the first static mixer and screw extruder are all by Flange joint, and described conveyance conduit and melt Conveying pump, the second heat exchanger, the second static mixer and screw extruder all pass through Flange joint.
4. the modified form polycarbonate melt pipeline system according to claim 1 or 2 or 3, it is characterized in that, distance between described melt Conveying pump and First Heat Exchanger or the second heat exchanger is 2 ~ 4m, distance between described First Heat Exchanger and the first static mixer is 1 ~ 3m, and the distance between described second heat exchanger and the second static mixer is 1 ~ 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504900.XU CN204820041U (en) | 2015-07-13 | 2015-07-13 | Improvement type polycarbonate fuse -element pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520504900.XU CN204820041U (en) | 2015-07-13 | 2015-07-13 | Improvement type polycarbonate fuse -element pipeline system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204820041U true CN204820041U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520504900.XU Active CN204820041U (en) | 2015-07-13 | 2015-07-13 | Improvement type polycarbonate fuse -element pipeline system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355978A (en) * | 2018-03-26 | 2019-10-22 | 科倍隆有限公司 | From the trigger valve throttle device of screw extruder melt conveying, the preparation system with the equipment and with the delivery method of the equipment |
-
2015
- 2015-07-13 CN CN201520504900.XU patent/CN204820041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355978A (en) * | 2018-03-26 | 2019-10-22 | 科倍隆有限公司 | From the trigger valve throttle device of screw extruder melt conveying, the preparation system with the equipment and with the delivery method of the equipment |
| CN110355978B (en) * | 2018-03-26 | 2022-11-04 | 科倍隆有限公司 | Start valve throttling device for conveying melt from screw extruder, preparation system with device and conveying method using device |
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