CN213166787U - Double-screw extruder - Google Patents
Double-screw extruder Download PDFInfo
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- CN213166787U CN213166787U CN202021564531.0U CN202021564531U CN213166787U CN 213166787 U CN213166787 U CN 213166787U CN 202021564531 U CN202021564531 U CN 202021564531U CN 213166787 U CN213166787 U CN 213166787U
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Abstract
The utility model discloses a double-screw extruder, including first screw rod, first screw rod is including first reinforced section, first mixed section with first reinforced section is connected, first reinforced section is including first screw thread, constitute first spiral groove between the adjacent first screw thread, first mixed section is including the second screw thread, constitute the second spiral groove between the adjacent second screw thread, the distance between the adjacent second screw thread is 4.5 times of first screw rod diameter, the depth of second spiral groove is less than the depth of first spiral groove; the second screw rod, the second screw rod is located first screw rod top has solved the not good problem of double screw extruder's shearing force and mixing property, has realized that double screw extruder has promoted shearing force and dispersibility effect when producing some polymers that the melting point is high, has improved the mixability, has ensured the quality of product, improves production efficiency, has effectively practiced thrift the raw materials, reduces economic cost.
Description
Technical Field
The utility model belongs to the technical field of the material processing equipment, concretely relates to double screw extruder.
Background
Most plastics have the advantages of light weight, stable chemical property, no corrosion, good impact resistance, better transparency and abrasion resistance, good insulativity, good colorability, low processing cost and the like, so the plastics are widely applied to daily life and industrial production. The processing technology of the thermoplastic plastics is mainly extrusion, and a screw extruder is common extrusion equipment.
In the prior art, when a Ferrel type double-screw extruder is used for producing some polymers with high melting points, materials cannot be completely melted and plasticized, the shearing force is poor, the dispersing effect is poor, the mixing performance is weak, the product quality is reduced, the production efficiency is reduced, and the economic cost is increased.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a double screw extruder, the shearing force and the not good problem of mixing property of Ferrel model double screw extruder have been solved, thereby lead to the material can not melt the plastify completely, reduce production efficiency, increase economic cost, through improving the screw rod shape, when having realized Ferrel model double screw extruder and producing the polymer that some melting points are high, shearing force and dispersibility effect have been promoted, the mixability has been improved, the quality of product has been ensured, and the production efficiency is improved, the raw materials has effectively been practiced thrift, and the economic cost is reduced.
The technical scheme provided by the embodiment of the application is as follows:
a twin screw extruder comprising a motor;
the speed reducer is connected with one end of the motor;
the first screw comprises a first connecting head, a first feeding section and a first mixing section, one side of the first connecting head is connected with one end of the speed reducer, the other side of the first connecting head is connected with a thrust bearing, the first feeding section is connected with the first connecting head, the first mixing section is connected with the first feeding section, the first feeding section comprises first threads, a first screw groove is formed between the adjacent first threads, the first mixing section comprises second threads, a second screw groove is formed between the adjacent second threads, the distance between the adjacent second threads is 4.5 times of the diameter of the first screw, and the depth of the second screw groove is smaller than that of the first screw groove;
the second screw rod is arranged above the first screw rod, the diameter of the second screw rod is equal to that of the first screw rod, the second screw rod comprises a second connector, a second feeding section and a second mixing section, the second feeding section is connected with the second connector, the second mixing section is connected with the second feeding section, the second connector is connected with the thrust bearing, the second feeding section comprises third threads, third thread grooves are formed between the adjacent third threads, the second mixing section comprises fourth threads, fourth thread grooves are formed between the adjacent fourth threads, the structure of the third threads is the same as that of the first threads, and the structure of the fourth threads is the same as that of the second threads;
the first thread and the third thread are arranged in a staggered mode, and the second thread and the fourth thread are arranged in a staggered mode.
Further, the angle of the first thread relative to the first thread groove is 80-90 degrees.
The utility model discloses in, through the screw thread interval and the thread groove degree of depth that change reinforced section and mixing section, when producing the polymer that some melting point is high, realized that the material reaches complete melting plastify, promote the shearing force, the dispersibility effect is good, has improved the mixing performance to improve production efficiency, effectively practiced thrift the raw materials, reduced economic cost.
The material cylinder is arranged on the periphery of the first screw rod and the second screw rod; the heater is arranged on the surface of the charging barrel; a diverter plate connected to an end of the barrel proximate the mixing section; and the discharge die head is connected with the flow distribution plate.
Furthermore, the discharging die head array is provided with discharging holes, the middle part of the discharging die head is provided with grooves, the groove array is provided with clamping holes, the particle size of a product can be controlled according to the size of the discharging holes by arranging the discharging holes, the particle size of the product can be adjusted by selecting the size of the discharging holes, the discharging die head is fast and convenient, the discharging die head can be used as the clamping holes for wrench operation by arranging the grooves and the clamping holes, the discharging die head is convenient to twist, the discharging die head is practical and convenient, fast and easy, and the discharging die head can be simply and easily replaced according to the particle size of the product.
Furthermore, the depth of the discharge hole is equal to the height of the discharge die head, and the product passes through the first screw and the second screw and then flows out of the splitter plate to the discharge die head, so that the product can be rapidly output.
Further, the aperture of the discharge hole is smaller than that of the clamping hole.
Further, the shape of the clamping hole is cylindrical.
Further, the depth of the clamping hole is smaller than the height of the discharge hole.
Further, the degree of depth of recess is less than the degree of depth in card hole, through the block of two depths, can effectively fix discharge die and spanner, realize that the spanner can easily take off and trade discharge die, and the recess with block the middle part that is in discharge die in hole, the atress is even, conveniently takes out and takes off and trade, and the discharge hole is located discharge die all around, is difficult for damaging the discharge hole when taking off and trade discharge die, has guaranteed the quality of product output.
Further, the shape of the groove is cylindrical.
The utility model has the advantages that:
by improving the shape of the screw, the problem that the shearing force and the mixing performance of the Ferrel-type double-screw extruder are poor is solved, the shearing force and the dispersing effect are improved when the Ferrel-type double-screw extruder is used for producing certain polymers with high melting points, the mixing performance is improved, the product quality is guaranteed, the production efficiency is improved, the raw materials are effectively saved, and the economic cost is reduced.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a schematic view of a first screw structure in the present invention;
FIG. 3 is a schematic view of a second screw structure of the present invention;
fig. 4 is a schematic view of a discharging die structure in the present invention;
fig. 5 is a sectional view taken along line a-a' in fig. 4.
The labels in the figure are: a motor 1; a speed reducer 2; the first screw 3, the first connecting head 31, the feeding section 32, the first screw thread 321, the first screw groove 322, the mixing section 33, the second screw thread 331 and the second screw groove 332; a thrust bearing 4; a second screw 5, a second connector 51; a charging barrel 6; a heater 7; a flow distribution plate 8; discharge die 9, discharge opening 91, recess 92, card hole 93.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
To facilitate understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
A twin screw extruder comprising: a motor 1; the speed reducer 2 is connected with one end of the motor 1; the first screw rod 3, the first screw rod 3 includes a first connection head 31, a first feeding section 32, and a first mixing section 33, one side of the first connection head 31 is connected to one end of the speed reducer 2, the other side of the first connection head 31 is connected to a thrust bearing 4, the first feeding section 32 is connected to the first connection head 31, the first mixing section 33 is connected to the first feeding section 31, the first feeding section 32 includes first threads 321, a first screw groove 322 is formed between adjacent first threads 321, the first mixing section 33 includes second threads 331, a second screw groove 332 is formed between adjacent second threads 331, a distance between adjacent second threads 331 is 4.5 times of a diameter of the first screw rod 3, and a depth of the second screw groove 332 is smaller than a depth of the first screw groove 322; a second screw 5, the second screw 5 being disposed above the first screw 3, the diameter of the second screw 5 being equal to the diameter of the first screw 3, the second screw 5 comprises a second connector 51, a second feeding section 52 and a second mixing section 53, the second feeding section 52 is connected with the second connector 51, the second mixing section 53 is connected with the second feeding section 52, the second connector 51 is connected to the thrust bearing 4, the second feeding section 52 comprises third threads 521, a third screw groove 522 is formed between adjacent third threads, the second mixing section 53 includes fourth threads 531, fourth grooves 532 are formed between adjacent fourth threads 531, the third thread 521 has the same structure as the first thread 321, and the fourth thread 531 has the same structure as the second thread 331; the first thread 321 is offset from the third thread 521, and the second thread 331 is offset from the fourth thread 531.
Further, the angle of the first thread 321 relative to the first thread groove 322 is 80-90 degrees.
The utility model discloses in, through the screw thread interval and the thread groove degree of depth that change reinforced section 32 and mixing section 33, when producing the polymer that some melting point is high, realized that the material reaches complete melting plastify, promote the shearing force, the dispersibility effect is good, has improved the mixing performance to improve production efficiency, effectively practiced thrift the raw materials, reduced economic cost.
Further, the device also comprises a material barrel 6, wherein the material barrel 6 is arranged on the periphery of the first screw 321 and the second screw 332; the heater 7 is arranged on the surface of the charging barrel 6; a diverter plate 8, said diverter plate 8 being attached to an end of said barrel 6 adjacent to said mixing section 33; and the discharge die head 9 is connected with the flow distribution plate 8, and the discharge die head 9 is connected with the flow distribution plate 8.
Furthermore, discharge die 9 is equipped with discharge opening 91 all around, discharge die 9's intermediate part is equipped with recess 92, recess 92 array is equipped with card hole 93, through setting up discharge opening 91, can come the particle size of control product according to the size of discharge opening, and the particle size of product can be adjusted to the size of optional discharge opening, and is swift convenient, through setting up recess 92 and card hole 93, can regard as the card hole that pulls the manual operation effect, is convenient for twist discharge die, and is practical convenient, and is swift light, can change discharge die according to the particle size of product easily.
Further, the depth of the discharge hole 91 is equal to the height of the discharge die head 9, and the product passes through the first screw 3 and the second screw 5 and then flows out of the splitter plate 8 to the discharge die head 9, so that the product can be rapidly output.
Further, the aperture of the discharging hole 91 is smaller than that of the clamping hole 93.
Further, the shape of the locking hole 93 is a cylinder.
Further, the depth of the clamping hole 93 is smaller than the height of the discharging hole 91.
Further, the degree of depth of recess 92 is less than the degree of depth of card hole 93, through the block of two depths, can effectively fix discharge die head and spanner, realize that the spanner can easily take off and trade discharge die head, and the middle part that is in discharge die head of recess 92 and card hole 93, the atress is even, conveniently takes out and takes off and trade, and the discharge hole is located discharge die head all around, is difficult for damaging the discharge hole when taking off and trade discharge die head, has guaranteed the quality of product output.
Further, the shape of the groove is cylindrical.
The utility model has the advantages that:
by improving the shape of the screw, the problem that the shearing force and the mixing performance of the Ferrel-type double-screw extruder are poor is solved, the shearing force and the dispersing effect are improved when the Ferrel-type double-screw extruder is used for producing certain polymers with high melting points, the mixing performance is improved, the product quality is guaranteed, the production efficiency is improved, the raw materials are effectively saved, and the economic cost is reduced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art.
Claims (8)
1. A twin screw extruder, comprising:
an electric motor;
the speed reducer is connected with one end of the motor;
the first screw comprises a first connecting head, a first feeding section and a first mixing section, one side of the first connecting head is connected with one end of the speed reducer, the other side of the first connecting head is connected with a thrust bearing, the first feeding section is connected with the first connecting head, the first mixing section is connected with the first feeding section, the first feeding section comprises first threads, a first screw groove is formed between the adjacent first threads, the first mixing section comprises second threads, a second screw groove is formed between the adjacent second threads, the distance between the adjacent second threads is 4.5 times of the diameter of the first screw, and the depth of the second screw groove is smaller than that of the first screw groove;
the second screw rod is arranged above the first screw rod, the diameter of the second screw rod is equal to that of the first screw rod, the second screw rod comprises a second connector, a second feeding section and a second mixing section, the second feeding section is connected with the second connector, the second mixing section is connected with the second feeding section, the second connector is connected with the thrust bearing, the second feeding section comprises third threads, third thread grooves are formed between the adjacent third threads, the second mixing section comprises fourth threads, fourth thread grooves are formed between the adjacent fourth threads, the structure of the third threads is the same as that of the first threads, and the structure of the fourth threads is the same as that of the second threads;
the first thread and the third thread are arranged in a staggered mode, and the second thread and the fourth thread are arranged in a staggered mode;
the charging barrel is arranged on the peripheries of the first screw and the second screw; the heater is arranged on the surface of the charging barrel; a diverter plate connected to an end of the barrel proximate the mixing section; the discharge die head is connected with the flow distribution plate;
the discharging die head array is provided with discharging holes, the middle part of the discharging die head is provided with grooves, and the groove array is provided with clamping holes.
2. The twin screw extruder of claim 1, wherein the angle of the first flight relative to the first flight is from 80 to 90 degrees.
3. The twin screw extruder of claim 1, wherein the discharge opening has a depth equal to the height of the discharge die.
4. The twin screw extruder as claimed in claim 1, wherein the discharge opening has a smaller diameter than the bore of the bayonet.
5. The twin screw extruder of claim 1, wherein the bayonet is cylindrical in shape.
6. The twin screw extruder of claim 1, wherein the depth of the bayonet is less than the height of the discharge opening.
7. The twin screw extruder of claim 1, wherein the depth of the groove is less than the depth of the bayonet.
8. A twin screw extruder as defined in claim 1 wherein the recess is cylindrical in shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564531.0U CN213166787U (en) | 2020-07-31 | 2020-07-31 | Double-screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564531.0U CN213166787U (en) | 2020-07-31 | 2020-07-31 | Double-screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213166787U true CN213166787U (en) | 2021-05-11 |
Family
ID=75797513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021564531.0U Active CN213166787U (en) | 2020-07-31 | 2020-07-31 | Double-screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213166787U (en) |
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2020
- 2020-07-31 CN CN202021564531.0U patent/CN213166787U/en active Active
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