CN101920552B - Screw extruder barrel and temperature control method thereof - Google Patents
Screw extruder barrel and temperature control method thereof Download PDFInfo
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- CN101920552B CN101920552B CN2009100868672A CN200910086867A CN101920552B CN 101920552 B CN101920552 B CN 101920552B CN 2009100868672 A CN2009100868672 A CN 2009100868672A CN 200910086867 A CN200910086867 A CN 200910086867A CN 101920552 B CN101920552 B CN 101920552B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/834—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/924—Barrel or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92971—Fluids, e.g. for temperature control or of environment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/251—Design of extruder parts, e.g. by modelling based on mathematical theories or experiments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/682—Barrels or cylinders for twin screws
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a screw extruder barrel and a temperature control method thereof. The barrel has a double-layer two-channel temperature control structure; on two different radial layers of the cross section of the barrel, a plurality of heat conducting medium runners are formed on two layers; a heating medium or a cooling medium can be introduced into the runner; the outer-layer runners are formed along the peripheral direction of the barrel, and the inner-layer runners are formed along the axial direction of the barrel; and the runners of the two layers are connected in parallel. Two temperature sensors are arranged inside and outside to respectively measure the nearby temperature of the inner surface of the barrel and the temperature of the outer layer of the barrel, the barrel temperature is controlled by a logic control program, and the local temperature difference of the inside and outside of the barrel and the alternate cold and hot local temperature difference can be reduced, so the temperature control of the whole barrel is uniform, overhigh stress is not generated locally, the contact heat transfer area between the heat conducting medium and the barrel is effectively increased, the heat exchange efficiency is improved, the sensitivity of the barrel temperature control system is improved and the energy consumption is reduced. The screw extruder barrel and the temperature control method are particularly suitable for large and medium-size double-screw extrusion granulators.
Description
Technical field:
The present invention relates to a kind of screw extruder barrel, be specifically related to have the machine barrel of temperature control channel design, particularly to the method for improvement and the barrel zone temperature control of the heating/cooling channel structure of machine barrel.Be applicable to large-scale screw extruder pelletizer group.
Background technology:
Heating/type of cooling that present screw extruder barrel generally adopts mainly contains: 1, external electric heater heating+water cooling mode, this mode machine barrel is offered the cooling duct, adopt water as cooling medium, because the impact of water vapor, temperature-control range and accuracy of temperature control all are restricted.2, the external electric heater heating+steam type of cooling, this mode adopts high steam as cooling medium, has overcome the problem of water vapor, but must supporting high steam supply station.3, the external electric heater heating+conduction oil type of cooling; compare with the 2nd kind of mode with the 1st, this mode not only has higher temperature-control range and accuracy of temperature control, and applicability is strong; be that middle-size and small-size extruder uses maximum heating and cooling forms, in large-scale extruding pelletization unit, use arranged also.But; owing to adopt external Electric heating; the extruder barrel internal-external temperature difference is larger; particularly for large-scale extruder barrel; cause easily barrel temperature profile inhomogeneous; thereby cause the machine barrel distortion, affect unit and use, so this mode only has the example of application less than the large-scale granulation unit of 320mm at screw diameter.
Chinese patent (200810011909.1) discloses a kind of binary channels machine barrel of arranging with layer that has, such as Fig. 1, shown in Figure 2, this machine barrel is on the same radially aspect of cross section, alternate intervals offers two groups of heat-conducting medium axial passages, be respectively heat medium runner and cooling medium runner, heating and cooling are carried out in machine barrel, avoid internal-external temperature difference excessive, but should be with the binary channels machine barrel of layer layout, still there is following defective: A in temperature control for the machine barrel of large-scale extruder, because cold, hot flow path is alternately arranged with layer, cause that alternately to locate local temperature difference excessive, machine barrel end face weld particularly, produce easily larger thermal stress deformation, thereby cause weld cracking; B, arrange with layer, be subject to the space layout restriction, be difficult to realize that the parallel connection of passage is communicated with, cause the transmission of heat by contact area between heat-conducting medium and the machine barrel little, temperature control sensitivity is low; The temperature sensor of installing on C, this machine barrel can only be measured near the surface temperature of machine barrel inner flow passage, and the machine barrel exospheric temperature can not get effective control, causes energy dissipation.
Summary of the invention
The present invention is for solving the temperature control problem of large-scale extruder barrel, a kind of machine barrel and temperature-controlled process thereof with rebuilding channel structure proposed, can reduce the local temperature difference that machine barrel is inside and outside and cold and heat succeed each other, make whole barrel temperature profile even, and the part does not produce excessive stresses, effectively increase the transmission of heat by contact area between heat-conducting medium and the machine barrel, improve heat exchanger effectiveness.
The machine barrel that the present invention proposes, has the binary channels temperature-control structure, described binary channels is on two of the machine barrel cross section different radially aspects, offer the heat-conducting medium passage of rebuilding, heat-conducting medium is arranged in the passage, and outer layer channel is made of many runners of circumferentially offering along machine barrel, and the internal layer passage is made of many runners of axially offering along machine barrel, with passing into a kind of heat-conducting medium (heat medium or cooling medium) in the laminar flow road, adopt parallel form between the runner with layer.
Adopt parallel form between the described runner, the runner that is every layer is to be communicated with two or more pieces runner parallel way, makes heat medium or cooling medium flow into respectively one group of runner in parallel.
Heat-conducting medium in the described passage is heat medium or cooling medium, according to actual processing and control requirement, the heat-conducting medium type in the control channel.
Two temperature sensors are installed on the machine barrel of the present invention, control respectively machine barrel ectonexine channel temperature.Two temperature sensors installing on the machine barrel, in the extruder normal operation process, internal layer sensor measuring device tube inner surface place temperature, control material plasticizing quality; Outer sensor measurement machine barrel exospheric temperature plays the barrel zone temperature compensating action.When ambient temperature variable effect barrel zone temperature, outer runner will play regulating action; When Flow of Goods and Materials variable effect barrel zone temperature, the internal layer runner plays regulating action, and is constant to guarantee barrel zone temperature.Machine barrel can be regarded as inside and outside two-layer thus, so that the relative controlled volume of machine barrel reduces, can reduce energy loss.
Heat-conducting medium in the described runner is preferably conduction oil.
Barrel zone temperature control method provided by the invention is: pass into heat-conducting medium in the runner of the rebuilding of machine barrel, be used in two temperature sensor T1 are installed on the machine barrel, T2, measure respectively machine barrel skin and internal surface temperature, the connection of heat-conducting medium is by two solenoid directional control valve V1 and V2 control in the runner, wherein V1 control passes into the switching (heat medium or cooling medium) of the heat-conducting medium type of machine barrel runner, V2 control heat-conducting medium switches in two-layer runner, mounting temperature sensor T3 and T4 on the pipeline, control heater H1, the switching of the cooling water control valve V3 of H2 and heat exchanger S1, with the temperature of control heat-conducting medium, the heat-conducting medium concrete control program that circulates is as follows:
(1) warm before the driving: reversal valve V1, V2 open inside and outside layer passage simultaneously, and machine barrel passes into heat medium.
(2) driving preincubation process:
When machine barrel exospheric temperature＜design temperature, temperature sensor T1 sends signal, and reversal valve V1, V2 control outer layer channel is opened, and the machine barrel outer layer channel passes into heat medium.
When machine barrel internal layer temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and machine barrel internal layer passage passes into heat medium.
(3) in the normal process process:
When barrel zone temperature＞＞during design temperature, temperature sensor T2 sends signal, the inside and outside layer of reversal valve V1, V2 control passage opened simultaneously, machine barrel passes into cooling medium.
When barrel zone temperature＞design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and the machine barrel internal layer passes into cooling medium.
When barrel zone temperature＜＜during design temperature, temperature sensor T2 sends signal, the inside and outside layer of reversal valve V1, V2 control passage opened simultaneously, machine barrel passes into heat medium.
When barrel zone temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and internal layer passes into heat medium.
During normal process, the heating/cooling system of extruder mainly plays the effect of cooling, to derive the heat that the material stickiness dissipates and generates in the machine barrel.
The invention effect: the present invention adopts the binary channels machine barrel of rebuilding, so that the contact area between heat-conducting medium and the machine barrel cylindrical shell increases greatly, not only can increase heat exchange area, the raising efficiency of heating surface of machine barrel heating/cooling system, and also improve the susceptibility of barrel zone temperature control.FEM calculation also shows, when adopting 160 ℃ of cold oil coolings, guarantee under the consistent prerequisite of runner inlet pressure, it is 26s that the binary channels barrel zone temperature of rebuilding of the present invention is reduced to 200 ℃ of (machine barrel mean temperature) required times from 210 ℃ (machine barrel mean temperatures), and the binary channels machine barrel required time of arranging with layer is 32s, temperature fall time reduces 12.5%, and the binary channels machine barrel of visible rebuilding obviously improves than the control sensitivity of the binary channels machine barrel of arranging with layer.
Fig. 8 and Fig. 9 are respectively the machine barrel mean temperature binary channels machine barrel that individual layer is arranged when being 200 ℃ and the interior Temperature Distribution situation of the binary channels machine barrel cross section of rebuilding of the present invention, as seen after adopting the flow passage structure of rebuilding, Temperature Distribution is more even in the machine barrel, can reduce like this because the temperature internal stress that temperature distributing disproportionation produces improves machine barrel safety coefficient and service life.
The binary channels machine barrel of rebuilding of the present invention is when cooling, and the internal layer passage passes into the low temperature conduction oil, and the welding closure plate only contacts with the low temperature conduction oil, does not have the excessive phenomenon of internal-external temperature difference, can reduce because the possibility of the weld cracking that thermal stress causes.
Two temperature sensors are installed on the binary channels machine barrel of rebuilding, can control respectively the ectonexine temperature, realize barrel zone temperature is regulated and mutually compensation, control material plasticizing quality, and then so that the relative controlled volume of machine barrel reduces, can reduce energy loss.
Description of drawings
The binary channels machine barrel three-dimensional model diagram that Fig. 1 arranges with layer
The binary channels machine barrel front flange cutaway view that Fig. 2 arranges with layer
The binary channels machine barrel three-dimensional model diagram of Fig. 3 rebuilding of the present invention
Fig. 4 binary channels machine barrel of the present invention transverse cross-sectional view
Fig. 5 binary channels machine barrel of the present invention axial section B-B cutaway view
Fig. 6 binary channels machine barrel of the present invention internal layer shaft orientation flowing channel expanded view
The outer circumferentially runner expanded view A-A of Fig. 7 binary channels machine barrel of the present invention analyses and observe
The interior temperature profile of binary channels machine barrel that Fig. 8 arranges with layer
Temperature profile in the binary channels machine barrel of Fig. 9 rebuilding of the present invention
Figure 10 binary channels barrel zone temperature of the present invention control flow chart
The specific embodiment
The binary channels barrel configuration of rebuilding such as Fig. 3, Fig. 4, shown in Figure 5 among the present invention, on two of the machine barrel cross section different radially aspects, divide two-layer many heat-conducting medium runners that offer, according to actual processing and control requirement, can pass into heat medium or cooling medium in the runner, outer runner is circumferentially offered along machine barrel, and the internal layer runner is axially offered along machine barrel, adopts parallel form between every layer the runner.Internal layer runner expanded view as shown in Figure 6, employing be the two-way parallel-connection structure.Heat-conducting medium is by oil-in flow ipe 26 and 25, and then sequential flow flows out pipeline by oil-out at last through 24 and 23,22 and 21,20 and 19,18 and 17,16 and 15,14 and 13,12 and 11,10 and 9,8 and 7,6 and 5,4 and 3,2 and 1.
Outer runner expanded view as shown in Figure 7, employing be the two-way parallel-connection structure.Heat-conducting medium flows into runner 27 and 28 by oil-in, and then sequential flow flows out by oil-out at last through 29 and 30,31 and 32,33 and 34.
The temperature control flow figure of machine barrel of the present invention sees Figure 10.Offer ectonexine installation of sensors hole 35 and 36 on the machine barrel, two temperature sensor T2 and T1 are installed, outer sensor T1 measures machine barrel exospheric temperature, internal layer sensor T2 measuring machine tube inner surface place temperature.Oil circuit is communicated with by two solenoid directional control valve V1 and V2 control, and wherein V1 control passes into the heat-conducting medium type (heat medium or cooling medium) of machine barrel runner, and which machine barrel runner V2 control heat-conducting medium enters actually.Mounting temperature sensor T3 and T4 on the pipeline, the switching of the cooling water control valve V3 of control heater H1, H2 and heat exchanger S1 is with the temperature of control heat-conducting medium.The heat-conducting medium concrete control program that circulates is as follows:
Warm before 1 driving
Reversal valve V1 to A holds, reversal valve V2 to B position, and inside and outside layer passage opened simultaneously, and pump P1 opens, and machine barrel passes into heat medium.
2 driving preincubation processes
When machine barrel exospheric temperature＜design temperature, temperature sensor T1 sends signal, and reversal valve V1 to A holds, and reversal valve V2 to A holds, and outer layer channel is opened, and pump P1 opens, and machine barrel passes into heat medium.
When machine barrel internal layer temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1 to A holds, and reversal valve V2 to C holds, and the internal layer passage is opened, and pump P1 opens, and machine barrel passes into heat medium.
In the 3 normal process processes
When barrel zone temperature＞＞during design temperature, temperature sensor T2 sends signal, reversal valve V1 to B holds, reversal valve V2 to B position, inside and outside layer passage opened simultaneously, pump P1 opens, machine barrel passes into cooling medium.
When barrel zone temperature＞design temperature, temperature sensor T2 sends signal, and reversal valve V1 to B holds, reversal valve V2 to C position, and the internal layer passage is opened, and pump P1 opens, and machine barrel passes into cooling medium.
When barrel zone temperature＜＜during design temperature, temperature sensor T2 sends signal, reversal valve V1 to A holds, reversal valve V2 to B position, inside and outside layer passage opened simultaneously, passes into heat medium.
When barrel zone temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1 to A holds, reversal valve V2 to C position, and the internal layer passage is opened, and passes into heat medium.
Claims (4)
1. screw extruder barrel, has the binary channels temperature-control structure, it is characterized in that, on two of the machine barrel cross section different radially aspects, offer the heat-conducting medium passage of rebuilding, outer layer channel is made of many runners of circumferentially offering along machine barrel, the internal layer passage is made of many runners of axially offering along machine barrel, adopt parallel form between the runner with layer, two temperature sensors are installed on the described machine barrel, control respectively machine barrel ectonexine temperature.
2. according to claim 1 machine barrel is characterized in that, described runner adopts parallel form, is that the two or more pieces runner is in parallel.
3. according to claim 1 machine barrel is characterized in that the heat-conducting medium in the described passage is heat medium or cooling medium.
4. according to claim 1 the temperature-controlled process of screw extruder barrel, it is characterized in that: in the runner of the rebuilding of machine barrel, pass into heat-conducting medium, with two temperature sensor T1 that install on the machine barrel, T2, measure respectively machine barrel skin and internal surface temperature, the connection of heat-conducting medium is by two solenoid directional control valve V1 and V2 control in the runner, wherein V1 control passes into heat-conducting medium heating or the cooling type of machine barrel runner, V2 control heat-conducting medium switches in two-layer runner, by the temperature sensor T3 and the T4 that install on the pipeline, control heater H1, the switching of the cooling water control valve V3 of H2 and heat exchanger S1, temperature with the control heat-conducting medium, concrete control method is: warm before drive (1): reversal valve V1, in V2 incites somebody to action, outer layer channel is opened simultaneously, and machine barrel passes into heat medium; (2) driving preincubation process: when machine barrel exospheric temperature＜design temperature, temperature sensor T1 sends signal, and reversal valve V1, V2 control outer layer channel is opened, and the machine barrel outer layer channel passes into heat medium; When machine barrel internal layer temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and machine barrel internal layer passage passes into heat medium; (3) in the normal process process: when barrel zone temperature＞＞during design temperature, temperature sensor T2 sends signal, the inside and outside layer of reversal valve V1, V2 control passage opened simultaneously, machine barrel passes into cooling medium; When barrel zone temperature＞design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and the machine barrel internal layer passes into cooling medium; When barrel zone temperature＜＜during design temperature, temperature sensor T2 sends signal, the inside and outside layer of reversal valve V1, V2 control passage opened simultaneously, machine barrel passes into heat medium; When barrel zone temperature＜design temperature, temperature sensor T2 sends signal, and reversal valve V1, V2 control internal layer passage is opened, and internal layer passes into heat medium.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100868672A CN101920552B (en) | 2009-06-17 | 2009-06-17 | Screw extruder barrel and temperature control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100868672A CN101920552B (en) | 2009-06-17 | 2009-06-17 | Screw extruder barrel and temperature control method thereof |
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| CN101920552A CN101920552A (en) | 2010-12-22 |
| CN101920552B true CN101920552B (en) | 2013-02-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102495128B (en) * | 2009-06-30 | 2015-08-19 | 同方威视技术股份有限公司 | A kind of heating and temperature controlling device being suitable for doping gas generating means |
| DE102010003154B4 (en) * | 2010-03-23 | 2014-01-02 | Extruder Experts Gmbh & Co. Kg | extruder |
| CN103376807B (en) * | 2012-04-13 | 2016-02-03 | 北京三博中自科技有限公司 | A kind of Electromagnetic Heating temperature-controlling system and air cooling system thereof |
| JP6049648B2 (en) * | 2013-07-02 | 2016-12-21 | 富士フイルム株式会社 | Twin screw extrusion apparatus and film manufacturing method |
| CN104149308B (en) * | 2014-07-24 | 2016-06-22 | 大连理工大学 | A kind of barrel configuration of the single screw rod/double screw extruder based on phase-change heat transfer |
| US11090848B2 (en) * | 2019-03-29 | 2021-08-17 | Toray Plastics (America), Inc. | Liquid injection barrel element for barrel extruder |
| DE102019215880A1 (en) * | 2019-10-15 | 2021-04-15 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | PROCESS AND FILM STRETCHER FOR THE PRODUCTION OF SEALABLE BIAXIAL ORIENTED POLYESTER-BASED FILM |
| CN117601399B (en) * | 2024-01-23 | 2024-03-22 | 沧州金达包装制品有限公司 | Double-screw temperature control device for PET extruder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1214460A1 (en) * | 1984-12-19 | 1986-02-28 | Украинский Научно-Исследовательский И Конструкторский Институт По Разработке Машин И Оборудования Для Переработки Пластмасс,Резины И Искусственной Кожи | Cooling device for extruder |
| GB2406541A (en) * | 2003-08-29 | 2005-04-06 | Mars Inc | Regulating extrudate flow in a cooling die |
| DE202005001985U1 (en) * | 2005-02-07 | 2005-05-19 | Fagerdala Benelux S.A. | Melt cooler for an extruder comprises cooled inner and outer tubes forming an intermediate melt flow chamber and barrier directs flow from inner chamber to intermediate chamber and back to inner chamber |
-
2009
- 2009-06-17 CN CN2009100868672A patent/CN101920552B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1214460A1 (en) * | 1984-12-19 | 1986-02-28 | Украинский Научно-Исследовательский И Конструкторский Институт По Разработке Машин И Оборудования Для Переработки Пластмасс,Резины И Искусственной Кожи | Cooling device for extruder |
| GB2406541A (en) * | 2003-08-29 | 2005-04-06 | Mars Inc | Regulating extrudate flow in a cooling die |
| DE202005001985U1 (en) * | 2005-02-07 | 2005-05-19 | Fagerdala Benelux S.A. | Melt cooler for an extruder comprises cooled inner and outer tubes forming an intermediate melt flow chamber and barrier directs flow from inner chamber to intermediate chamber and back to inner chamber |
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| Publication number | Publication date |
|---|---|
| CN101920552A (en) | 2010-12-22 |
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