CN211441087U - Heat insulation device for feeding end of double-screw extruder barrel - Google Patents
Heat insulation device for feeding end of double-screw extruder barrel Download PDFInfo
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- CN211441087U CN211441087U CN201922378630.3U CN201922378630U CN211441087U CN 211441087 U CN211441087 U CN 211441087U CN 201922378630 U CN201922378630 U CN 201922378630U CN 211441087 U CN211441087 U CN 211441087U
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- barrel
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- heat insulation
- double
- feeding
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Abstract
The utility model relates to a heat insulation device for double screw extruding machine barrel feeding end installs the adiabatic liner the same with barrel section shape additional between extruding machine first section barrel and second section barrel, and the feeding mouth is installed to first section barrel top. The heat insulation gasket can enable the temperature difference between two adjacent machine barrels to reach more than 150 ℃, so that the problem that materials are adhered due to the fact that auxiliary agents of the first machine barrel are melted due to the fact that heat of the second machine barrel is transferred to the first machine barrel is avoided, the problem that feeding at a feeding opening is difficult is solved, the using amount of cooling water is reduced, and the operation cost is saved.
Description
Technical Field
The utility model belongs to the plastics processing field relates to the double screw extruding machine, especially a heat insulation device that is used for double screw extruding machine barrel feeding end.
Background
In the production of modified plastics, twin-screw extruders are the main processing equipment, from the feed inlet to the head, and generally have 6 to 10 heating zones. The feeding section is the first section. In order to ensure the performance of the plastic, a formula needs to be designed according to the performance of the material, and auxiliaries such as an antioxidant, a lubricant, a flame retardant and the like are added into the raw materials. The mixed materials enter a feeding port of a double-screw extruder through a forced feeding screw in a hopper under the action of gravity, the double screws belong to a material conveying section, and the thread structure is a deep screw groove. Because the melting point of the auxiliary agent is low, when the dosage of the auxiliary agent is large, especially when the dosage of the auxiliary agent reaches more than 10 percent, the auxiliary agent is melted and adhered with resin material particles at high temperature, and the blanking is difficult. The materials hung on the wall of the barrel of the feeding port are accumulated to cause the blockage of the feeding port, so that the production is difficult to be normally carried out. In a common method, a heating power supply of the section of the cylinder is cut off, cooling water is started to cool the cylinder, and heat is conducted to the section due to the fact that the section is too close to an adjacent heating section, so that the temperature of the section is higher than the melting temperature of the auxiliary agent, and the treatment effect is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's weak point, provide an investment is little, effectual a heat-insulating device for double screw extruder barrel feeding end.
The utility model provides a technical scheme that technical problem adopted is:
a heat insulation device for the feeding end of a double-screw extruder barrel is characterized in that a heat insulation gasket with the same shape as the section shape of the barrel is additionally arranged between a first section of barrel and a second section of barrel of the extruder, and a feeding port is arranged above the first section of barrel.
And a double-screw through hole is formed in the center of the heat insulation gasket, and a plurality of bolt holes for connecting the first section cylinder and the second section cylinder are symmetrically formed on the periphery of the heat insulation gasket.
Moreover, the heat insulation gasket is made of zirconia ceramic material.
The utility model has the advantages that:
the utility model discloses install the adiabatic ceramic liner the same with barrel section shape additional between the first section barrel (feed inlet) of barrel and second section barrel, can make two sections adjacent barrel difference in temperature reach more than 150 ℃, avoid making first section barrel auxiliary agent melt and cause the glutinous problem of material because of second section barrel heat transfer to first section barrel, and then solved the problem of feed inlet unloading difficulty, reduced the cooling water quantity simultaneously, practice thrift the running cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the insulation blanket of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative, not restrictive, and the scope of the invention should not be limited thereto.
A thermal insulation device for the feed end of the barrel of a twin screw extruder is provided with a thermal insulation liner 1 between a first barrel 4 and a second barrel 3 of the extruder, and a feed port 2 is arranged in the first barrel. The section of the heat insulation gasket is shown in figure 2, a double-screw through hole 5 is formed in the center of the heat insulation gasket, and a plurality of bolt holes 6 are symmetrically formed on the periphery of the heat insulation gasket and used for connecting a machine barrel.
The heat insulating pad is preferably a zirconia ceramic material with a thermal conductivity of 1.6 w/m.k-2 w/m.k.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the spirit of the present invention, and these modifications and improvements are all within the protection scope of the present invention.
Claims (3)
1. An insulating device for the feed end of a barrel of a twin screw extruder, characterized by: and a heat insulation gasket with the same shape as the section of the first section of the cylinder and the second section of the cylinder of the extruder is additionally arranged between the first section of the cylinder and the second section of the cylinder of the extruder, and a feeding port is arranged above the first section of the cylinder.
2. The insulation for the feed end of the barrel of a twin screw extruder of claim 1, wherein: a double-screw through hole is formed in the center of the heat insulation gasket, and a plurality of bolt holes for connecting the first section of the machine barrel and the second section of the machine barrel are symmetrically formed on the periphery of the heat insulation gasket.
3. The insulation for the feed end of the barrel of a twin screw extruder of claim 1, wherein: the heat insulation gasket is made of zirconia ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922378630.3U CN211441087U (en) | 2019-12-26 | 2019-12-26 | Heat insulation device for feeding end of double-screw extruder barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922378630.3U CN211441087U (en) | 2019-12-26 | 2019-12-26 | Heat insulation device for feeding end of double-screw extruder barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211441087U true CN211441087U (en) | 2020-09-08 |
Family
ID=72308888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922378630.3U Active CN211441087U (en) | 2019-12-26 | 2019-12-26 | Heat insulation device for feeding end of double-screw extruder barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211441087U (en) |
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2019
- 2019-12-26 CN CN201922378630.3U patent/CN211441087U/en active Active
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