CN113799363A - Extrusion equipment with automatic exhaust function - Google Patents
Extrusion equipment with automatic exhaust function Download PDFInfo
- Publication number
- CN113799363A CN113799363A CN202111079498.1A CN202111079498A CN113799363A CN 113799363 A CN113799363 A CN 113799363A CN 202111079498 A CN202111079498 A CN 202111079498A CN 113799363 A CN113799363 A CN 113799363A
- Authority
- CN
- China
- Prior art keywords
- screw
- barrel
- cylinder
- transition sleeve
- machine barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001125 extrusion Methods 0.000 title claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims description 47
- 238000013022 venting Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 81
- 238000002425 crystallisation Methods 0.000 abstract description 14
- 230000008025 crystallization Effects 0.000 abstract description 14
- 238000001035 drying Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 14
- 230000009471 action Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 239000000155 melt Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Images
Classifications
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- 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
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- 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
- B29C48/76—Venting, drying means; Degassing means
- B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
- B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
- B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
Abstract
The invention discloses an extrusion device with an automatic exhaust function, which comprises: the extruder comprises a motor, a speed reducer, a charging barrel, a machine barrel assembly, a screw assembly and an extruder head; the machine barrel assembly comprises a first machine barrel, a second machine barrel and a third machine barrel, the third machine barrel is connected between the first machine barrel and the second machine barrel, a feed port is formed in the first machine barrel, a vent port is formed in the third machine barrel, and a gear ring is further arranged in the third machine barrel; the screw rod assembly comprises a first screw rod, a second screw rod, a third screw rod and a plurality of fourth screw rods, the third screw rods are connected between the first screw rod and the second screw rods, a plurality of mounting grooves are formed in the surface of the third screw rods, gears are arranged at one end portions of the fourth screw rods, and the fourth screw rods are rotatably arranged in the corresponding mounting grooves. The pre-crystallization drying machine is saved, so that the energy consumption of pre-crystallization drying treatment in the early stage of material processing and a multi-stage exhaust type extruder is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of machinery, in particular to extrusion equipment with an automatic exhaust function.
Background
Extruders are widely used in industrial production and generally comprise a barrel, a screw and a driving mechanism, wherein the driving mechanism drives the screw to rotate in the barrel so as to extrude and convey materials in the barrel. Part of high molecular plastics are sensitive to moisture, for example, saturated high molecular polymers contain hydrophilic groups in molecular structures, COOR is very easy to absorb water, and hydrolysis is caused during melt extrusion, so that the melt viscosity and molecular weight are reduced, and the phenomena of foaming, brittleness, yellowing and the like of an extrusion molded product are caused. Therefore, a pre-crystallization dryer is needed to be configured, and the pre-crystallization dryer is used for pre-crystallizing and drying the materials. Because a pre-crystallization dryer needs to be configured, on one hand, the production energy consumption is increased, and on the other hand, the production efficiency is reduced. The invention aims to solve the technical problem of how to design a technology for reducing energy consumption and improving production efficiency.
Disclosure of Invention
The invention provides extrusion equipment with an automatic exhaust function, which saves a pre-crystallization dryer so as to reduce the energy consumption of pre-crystallization drying treatment at the early stage of material processing and a multi-stage exhaust type extruder and improve the production efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an extrusion device with an automatic exhaust function, which comprises: the extruder comprises a motor, a speed reducer, a charging barrel, a machine barrel assembly, a screw assembly and an extruder head;
the barrel assembly comprises a first barrel, a second barrel and a third barrel, the third barrel is connected between the first barrel and the second barrel, a feed port is formed in the first barrel, a vent port is formed in the third barrel, and a gear ring is further arranged in the third barrel;
the screw assembly comprises a first screw, a second screw, a third screw and a plurality of fourth screws, the third screw is connected between the first screw and the second screw, a plurality of mounting grooves are formed in the surface of the third screw, a gear is arranged at one end of each fourth screw, and the fourth screws are rotatably arranged in the corresponding mounting grooves;
wherein the first screw is rotatably disposed in the first barrel, the second screw is rotatably disposed in the second barrel, the third screw is rotatably disposed in the third barrel, and the gear is engaged with the ring gear;
in addition, the motor is connected with the first screw rod through the speed reducer, the extruder head is arranged on the second cylinder, and the cylinder is arranged on the feeding hole.
Further, one end portion of the mounting groove is provided with an opening, and the other end portion forms a positioning portion, and the end portion of the gear is arranged opposite to the positioning portion.
Furthermore, the end surface of the third screw, on which the gear is mounted, is provided with a plurality of guide grooves, and the guide grooves are communicated with the corresponding mounting grooves.
Further, the third cylinder is connected with the first cylinder through a first connector, and the third cylinder is connected with the second cylinder through a second connector.
Further, the first connecting head comprises a first flange and a first transition sleeve, a first mounting hole is formed in the first flange, the first transition sleeve is arranged in the first mounting hole, and a first annular flow passage is formed between the first transition sleeve and the inner wall of the first mounting hole; the first flange is arranged between the first cylinder and the third cylinder, the first transition sleeve is arranged between the first screw and the third screw, and the first annular flow passage is communicated with the first cylinder and the third cylinder.
Further, the second connector comprises a second flange and a second transition sleeve, a second mounting hole is formed in the second flange, the second transition sleeve is arranged in the second mounting hole, and a second annular flow channel is formed between the second transition sleeve and the inner wall of the second mounting hole; the second flange is arranged between the second cylinder and the third cylinder, the second transition sleeve is arranged between the second screw and the third screw, and the second annular flow passage is communicated with the second cylinder and the third cylinder.
Furthermore, a plurality of first flow channel notches corresponding to the diversion trenches are arranged at the edge of the end part, close to the third screw, of the first transition sleeve, and the first flow channel notches are communicated with the corresponding diversion trenches.
Furthermore, a plurality of second flow channel notches are formed in the edges, close to the third screw, of the end portions of the second transition sleeve and the third screw, and the second flow channel notches are communicated with the corresponding openings.
Furthermore, a positioning ring is further arranged on the second transition sleeve, and the other end of the fourth screw abuts against the positioning ring.
Further, the steam-water separator further comprises an auxiliary exhaust assembly, wherein the auxiliary exhaust assembly is connected with the exhaust port and is used for sucking steam at the exhaust port.
Compared with the prior art, the technical scheme of the invention has the following technical effects: the third machine barrel is arranged between the first machine barrel and the second machine barrel, the third machine barrel is provided with a third screw and a plurality of fourth screws, the material extruded and conveyed from the first machine barrel enters the third machine barrel, under the driving action of the third screw, the material is extruded and conveyed between the third screw and the plurality of fourth screws, the third screw rotates and synchronously rotates the plurality of fourth screws through the gear ring transmission power, so that the material is repeatedly sheared and kneaded between the tooth side surfaces of the screws and in the radial clearance, the heat exchange area of the material is greatly increased, the material is subjected to strong shearing stress action in the third machine barrel, the surface of the material is continuously updated and releases the moisture on the surface of the material, the moisture contained in the material can be rapidly heated and evaporated, the moisture separated from the material is discharged from a discharge port along with hot gas, and the material is subjected to deformation and stretching action when passing, the pre-crystallization drying device is beneficial to mixing and plasticizing of plastics, can improve the distribution mixing effect, does not need to pre-crystallize and dry materials in advance through the pre-crystallization drying machine, saves the cost of the pre-crystallization drying machine, simplifies the process structure, saves the energy consumption, reduces the occupied area, and improves the production efficiency and the extrusion effect.
Drawings
FIG. 1 is a schematic structural diagram of an extrusion apparatus with an automatic venting function according to the present invention;
FIG. 2 is a schematic view of a partial structure of an extrusion apparatus having an automatic degassing function according to the present invention;
FIG. 3 is a partial cross-sectional view of the extrusion apparatus with automatic venting of air in accordance with the present invention;
FIG. 4 is an enlarged view of a portion of area A of FIG. 3;
FIG. 5 is an enlarged partial view of the area B in FIG. 3;
FIG. 6 is one of the partial assembly views of the extrusion apparatus having an automatic venting function according to the present invention;
FIG. 7 is a second partial assembly view of the extrusion apparatus with automatic venting function of the present invention;
FIG. 8 is an exploded view of FIG. 7;
FIG. 9 is a schematic illustration of the first transition piece of FIG. 7;
fig. 10 is an assembly view of the second transition sleeve and retaining ring of fig. 7.
Reference numerals:
a barrel assembly 1;
the heating part 10, the first machine barrel 11, the second machine barrel 12, the third machine barrel 13, the first connector 14 and the second connector 15;
the exhaust port 130, the gear ring 131, the first flange 141, the first transition sleeve 142, the extension sleeve 143, the second flange 151, the second transition sleeve 152 and the positioning ring 153;
a first flow channel notch 1421, a flow guide rib 1431, and a second flow channel notch 1521;
a screw assembly 2;
a first screw 21, a second screw 22, a third screw 23, and a fourth screw 24;
the mounting groove 231, the opening 232, the positioning part 233, the guide groove 234, and the gear 241;
a motor 3;
a speed reducer;
a cartridge 100.
Detailed Description
As shown in fig. 1 to 10, the present invention provides an extrusion apparatus having an automatic air discharging function, comprising: a barrel assembly 1, a screw assembly 2, a motor 3, a reducer 4 and an extruder head (not shown);
the machine barrel assembly 1 comprises a first machine barrel 11, a second machine barrel 12 and a third machine barrel 13, wherein the third machine barrel 13 is connected between the first machine barrel 11 and the second machine barrel 12, a feed port is formed in the first machine barrel, a charging barrel 100 is arranged on the feed port, a vent 130 is formed in the third machine barrel 13, and a gear ring 131 is further arranged in the third machine barrel;
the screw assembly 2 comprises a first screw 21, a second screw 22, a third screw 23 and a plurality of fourth screws 24, wherein the third screw is connected between the first screw and the second screw, a plurality of mounting grooves 231 are formed on the surface of the third screw, a gear 241 is arranged at one end of each fourth screw, and the fourth screws are rotatably arranged in the corresponding mounting grooves;
wherein the first screw is rotatably disposed in the first barrel, the second screw is rotatably disposed in the second barrel, the third screw is rotatably disposed in the third barrel, and the gear 241 is engaged with the ring gear 131;
in addition, the motor is connected with the first screw rod through the speed reducer, and the extruder head is arranged on the second cylinder.
Specifically, in the actual use process, the first barrel 11 is provided with the charging barrel 100 for facilitating the feeding, and the discharge port of the charging barrel 100 is connected with the feeding port formed on the side wall of the first barrel 11. The material barrel 100 contains a material to be extruded, and the material is output from the discharge port of the material barrel 100 and enters the first barrel 11 through the feed port.
The material enters the first barrel 11, the first screw 21 is driven by the motor 3 to rotate in the first barrel 11, the material is driven to be conveyed forwards in the first barrel 11, and the material is preliminarily extruded by the first screw 21 while being conveyed forwards in the first barrel 11.
The material output from the first barrel 11 enters the third barrel 13, and the third barrel 13 is provided with a third screw 23 and a plurality of fourth screws 24. The third screw 23 is connected with the first screw 21 to rotate together with the first screw 21, and the third screw 23 drives the fourth screw 24 to rotate synchronously with the first screw in the rotating process, and the fourth screw can rotate relative to the third screw 23 in the mounting groove under the matching action of the gear ring 131 and the gear 241. Thus, after the material enters the third barrel 13, the material is extruded and conveyed by the third screw 23 and is further extruded and conveyed by the fourth screw 24.
A planetary section is formed between the third screw 23 and the plurality of fourth screws 24, the material is extruded between the third screw 23 and the fourth screws 24, the material is subjected to the strong shearing stress action of the third screw 23 and the fourth screws 24 in the conveying process of the planetary section, so that the surface of the material is continuously updated and turned outwards, the helical teeth of the third screw 23 and the fourth screws 24 are matched with each other to extrude the material from inside to outside, and the external contact area of the material is effectively increased to release the moisture in the material; meanwhile, the helical teeth of the third screw 23 are at a helical angle of 45 ℃ to ensure that the material integrally flows forwards so as to avoid the material from accumulating at the planet section, thus the planet section has good self-cleaning and air exhaust performance.
After the materials are treated by the planetary section, the melt output from the third cylinder 13 has high plasticizing and mixing quality, the melt temperature is low and the distribution is uniform, and the method has the advantages of reducing leakage flow and reverse flow, saving a conventional huge pre-crystallization drying device, simplifying the process structure, saving energy consumption, reducing the occupied area, improving the production efficiency and the like.
In addition, the first cylinder 11 and the second cylinder 12 are provided with heating members 10, respectively. Specifically, the first barrel 11 and the second barrel 12 are respectively provided with a heating member 10 to heat the material in the barrels, wherein the heating member 10 is wrapped outside the barrels to uniformly and efficiently heat the material in the barrels.
Further, in order to facilitate the output of the material, one end of the mounting groove is provided with an opening 232, and the other end forms a positioning portion 233, and the end of the gear 241 is arranged opposite to the positioning portion.
In particular, during the process that the material is extruded and conveyed by the fourth screw in the mounting groove, the material can be finally output from the opening of the mounting groove into the second cylinder. Similarly, the end surface of the third screw, on which the gear 241 is mounted, is provided with a plurality of guide grooves 234, and the guide grooves are communicated with the corresponding mounting grooves. For material flowing from the first barrel into the third barrel, material will enter into the mounting groove via the diversion trench. Therefore, the materials can be uniformly distributed into the mounting grooves, so that the materials are uniformly extruded by the fourth screw rods at different positions.
Still further, in order to rapidly and efficiently discharge moisture in the third barrel 13, the extrusion apparatus with automatic air discharge function further comprises an auxiliary air discharge assembly connected to the air discharge port 130 and used for sucking moisture and other volatile substances at the air discharge port 130.
Specifically, during the process that the material enters the third barrel 13 and is extruded by the third screw 23 and the fourth screw 24, after moisture in the material is extruded and separated by the third screw 23 and the fourth screw 24, moisture in the third barrel 13 is released from the vent 130 by the auxiliary venting assembly, and the moisture released from the material in the third barrel 13 is quickly and efficiently pumped out by the auxiliary venting assembly. Wherein the auxiliary exhaust assembly includes a vacuum pump and an exhaust box connected between the vacuum pump and the exhaust port 130. The exhaust box is installed on the exhaust port 130, and the vacuum pump is connected with the exhaust box through the air pipe, so that negative pressure is formed in the exhaust box under the action of the vacuum pump, and moisture in the third barrel 13 can be rapidly exhausted under the action of the negative pressure.
Based on the above technical solution, optionally, in order to facilitate the connection of the third barrel 13 between the first barrel 11 and the second barrel 12, the third barrel 13 and the first barrel 11 are connected together by a first connector 14, and the third barrel 13 and the second barrel 12 are connected together by a second connector 15.
Specifically, because the barrels are of a sectional structure, the third barrel 13 is connected between the first barrel 11 and the second barrel 12, and the third barrel 13 is connected between the first barrel 11 and the second barrel 12 in a connecting head manner, on one hand, the requirement of structural fixed connection is met, and on the other hand, materials are conveyed in the first barrel 11, the third barrel 13 and the second barrel 12.
The first connecting head 14 includes a first flange 141 and a first transition sleeve 142, a first mounting hole (not labeled) is disposed on the first flange 141, the first transition sleeve 142 is disposed in the first mounting hole, and a first annular flow passage is formed between the first transition sleeve 142 and an inner wall of the first mounting hole; a first flange 141 is arranged between the first barrel 11 and the third barrel 13, a first transition sleeve 142 is arranged between the first screw 21 and the third screw 23, and the first annular flow passage is communicated with the first barrel 11 and the third barrel 13;
the second connector 15 includes a second flange 151 and a second transition sleeve 152, a second mounting hole (not marked) is provided on the second flange 151, the second transition sleeve 152 is disposed in the second mounting hole, and a second annular flow passage is formed between the second transition sleeve 152 and an inner wall of the second mounting hole; a second flange 151 is disposed between the second barrel 12 and the third barrel 13, and a second transition sleeve 152 is disposed between the second screw 22 and the third screw 23, the second annular flow passage communicating the second barrel 12 and the third barrel 13.
Specifically, in the actual assembly process, the first barrel 11 and the third barrel 13 are connected together by the first flange 141, and at the same time, the first transition sleeve 142 is connected between the first screw 21 and the third screw 23, so that the material output from the first barrel 11 enters the third barrel 13 through the first annular flow passage.
Similarly, in the actual assembly process, the second cylinder 12 is connected with the third cylinder 13 by the second flange 151, and at the same time, the second transition sleeve 152 is connected between the second screw 22 and the third screw 23, and the material output from the third cylinder 13 enters the second cylinder 12 through the second annular flow channel.
Wherein, along material direction of delivery, the cross sectional dimension of first annular runner crescent, and the cross sectional dimension of first annular runner dwindles gradually. Correspondingly, the cross section of the outer contour of the first transition sleeve 142 and the second transition sleeve 152 is a trapezoid structure. The end edge of the first transition sleeve 142 adjacent to the third screw 23 is provided with a plurality of first flow channel notches 1421 corresponding to the fourth screw 24, and the end edge of the second transition sleeve 152 adjacent to the third screw 23 is provided with a second flow channel notch 1521. Specifically, the material output from the first barrel 11 is conveyed into the third barrel 13 through the first annular flow channel and flows into the space between the corresponding fourth screw 24 and third screw 23 from the first flow channel notch 1421. Similarly, the material flowing out of the third barrel 13 is dispersed out through the second flow channel gap 1521 and into the second barrel 12.
In addition, in order to reduce the overall length dimension of the apparatus, the first transition sleeve 142 is fitted over the first screw 21, and the second transition sleeve 152 is fitted over the second screw 22.
Preferably, in order to ensure that the material can smoothly enter the third barrel 13 from the first barrel 11 and be uniformly distributed in the third barrel 13, the first transition sleeve 142 is further provided with an extension sleeve 143, the extension sleeve 143 extends towards the first screw 21, and a plurality of flow guiding ribs 1431 are distributed on the outer peripheral wall of the extension sleeve 143.
Specifically, because the material output from the first barrel 11 needs to be uniformly dispersed to the position corresponding to each fourth screw 24, and the plurality of flow guide ribs 1431 arranged along the length direction are arranged on the outer peripheral wall of the extension sleeve 143, the material output from the first barrel 11 can be guided and divided by the flow guide ribs 1431, so that the material can be uniformly dispersed and conveyed to each fourth screw 24.
Further, a plurality of first runner notches 1421 corresponding to the diversion trenches are formed in the end edges, adjacent to the third screw, of the first transition sleeve, and the first runner notches are communicated with the corresponding diversion trenches.
Specifically, after the material is output from the first barrel, the material is divided by the flow guide rib and flows into the corresponding flow guide groove 234 through each first flow channel notch 1421, so that the material is more effectively ensured to uniformly disperse and flow.
Similarly, a plurality of second flow channel notches 1521 are arranged at the edges of the adjacent ends of the second transition sleeve and the third screw, and the second flow channel notches are communicated with the corresponding openings.
Specifically, material output from the third barrel can flow out through the openings and the corresponding second flow channel gaps 1521 to enter the second barrel in a uniform distribution. In addition, in order to facilitate the end positioning of the fourth screw rod in the mounting groove, a positioning ring 153 is further disposed on the second transition sleeve, and the other end of the fourth screw rod abuts against the positioning ring 153. Specifically, the positioning ring 153 is sandwiched between the second transition sleeve and the end of the third screw, and the fourth screw is sandwiched between the positioning ring 153 and the positioning portion, so as to position the fourth screw.
In addition, the invention also provides a using method of the extrusion equipment with the automatic exhaust function, which comprises the following steps:
the material enters a first machine barrel, is pushed to advance by a rotating first screw rod and is heated, melted and plasticized at the same time, then enters a third machine barrel, is extruded and mixed by the third screw rod and a plurality of fourth screw rods, enters a second machine barrel, is pushed to advance by a rotating second screw rod, is heated at the same time, and is finally output from an extruder head.
Specifically, the first barrel 11, the third barrel 13 and the second barrel 12 respectively form three stages of a solid conveying area, a melting area and a melt conveying area, the solid material enters the first barrel 11 to be heated and conveyed by the first screw 21, and finally enters the third barrel 13 after being melted and plasticized, the material is subjected to high-strength extrusion by the third screw 23 and the plurality of fourth screws 24 in the third barrel 13, so that the material is melted and fully mixed, and meanwhile, moisture in the material is fully separated out and discharged from the exhaust port 130, so that the plasticizing and mixing quality of the material is improved. Finally, the material is melted to form a melt, and the melt enters the second barrel 12 to be continuously extruded and conveyed by the second screw 22. By adopting the method, the materials can be fully plasticized and mixed, and the moisture exhaust operation is completed in the extrusion process, so that the production efficiency is improved.
Compared with the prior art, the technical scheme of the invention has the following technical effects: through the machine barrel with a three-section structure, the third machine barrel is provided with the third screw and the plurality of fourth screws, materials extruded and conveyed from the first machine barrel enter the third machine barrel, the materials are extruded and conveyed between the third screw and the plurality of fourth screws under the driving action of the third screw, the third screw and the plurality of fourth screws are continuously meshed, so that the materials are repeatedly sheared and kneaded between tooth side surfaces of the screws and in radial gaps, the heat exchange area of the materials is greatly increased, the materials are subjected to strong shearing stress action in a planetary section, the surfaces of the materials are continuously updated and release moisture on the surfaces of the materials, further, the moisture contained in the materials can be rapidly heated and evaporated, the moisture separated from the materials is discharged from a discharge port along with hot air, and the materials are subjected to deformation and stretching action when passing, thereby being beneficial to the mixing and plasticizing of plastics, the distribution mixing effect can be improved, the pre-crystallization drying treatment of the material by a pre-crystallization dryer is not needed in advance, the cost of the pre-crystallization dryer is saved, the process structure is simplified, the energy consumption is saved, the occupied area is reduced, and the production efficiency is improved; meanwhile, materials meshed with the spiral teeth of the screw rod flow back to form a vortex, meanwhile, the materials can be guaranteed to flow forwards under the driving action of the screw rod, the effects of reducing leakage flow and backflow are achieved, the materials are prevented from accumulating in the planetary section of the screw rod, the screw rod in the third cylinder has good self-cleaning and air discharging performance, a melt produced by the multi-section type air discharge extruder has high plasticizing and mixing quality, the temperature of the melt is low, the distribution is uniform, and the extrusion effect is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An extrusion apparatus with automatic venting, comprising: the extruder comprises a motor, a speed reducer, a charging barrel, a machine barrel assembly, a screw assembly and an extruder head;
the barrel assembly comprises a first barrel, a second barrel and a third barrel, the third barrel is connected between the first barrel and the second barrel, a feed port is formed in the first barrel, a vent port is formed in the third barrel, and a gear ring is further arranged in the third barrel;
the screw assembly comprises a first screw, a second screw, a third screw and a plurality of fourth screws, the third screw is connected between the first screw and the second screw, a plurality of mounting grooves are formed in the surface of the third screw, a gear is arranged at one end of each fourth screw, and the fourth screws are rotatably arranged in the corresponding mounting grooves;
wherein the first screw is rotatably disposed in the first barrel, the second screw is rotatably disposed in the second barrel, the third screw is rotatably disposed in the third barrel, and the gear is engaged with the ring gear;
in addition, the motor is connected with the first screw rod through the speed reducer, the extruder head is arranged on the second cylinder, and the cylinder is arranged on the feeding hole.
2. The extrusion apparatus with an automatic air discharging function as claimed in claim 1, wherein one end portion of the mounting groove is provided with an opening, and the other end portion forms a positioning portion, and an end portion of the gear is disposed opposite to the positioning portion.
3. The extrusion apparatus with automatic air exhaust function as claimed in claim 2, wherein the end surface of the third screw on which the gear is mounted is provided with a plurality of guide grooves, and the guide grooves are communicated with the corresponding mounting grooves.
4. The extrusion apparatus with automatic air exhaust function as claimed in claim 3, wherein the third cylinder is connected with the first cylinder through a first connector, and the third cylinder is connected with the second cylinder through a second connector.
5. The extrusion apparatus with automatic exhaust function according to claim 4, wherein the first connecting head comprises a first flange and a first transition sleeve, the first flange is provided with a first mounting hole, the first transition sleeve is arranged in the first mounting hole, and a first annular flow passage is formed between the first transition sleeve and the inner wall of the first mounting hole; the first flange is arranged between the first cylinder and the third cylinder, the first transition sleeve is arranged between the first screw and the third screw, and the first annular flow passage is communicated with the first cylinder and the third cylinder.
6. The extrusion apparatus with automatic air exhaust function as recited in claim 5, wherein the end edge of the first transition sleeve adjacent to the third screw is provided with a plurality of first runner notches corresponding to the guide grooves, and the first runner notches are communicated with the corresponding guide grooves.
7. The extrusion apparatus with automatic exhaust function as recited in claim 5, wherein the second connector comprises a second flange and a second transition sleeve, the second flange is provided with a second mounting hole, the second transition sleeve is arranged in the second mounting hole, and a second annular flow channel is formed between the second transition sleeve and an inner wall of the second mounting hole; the second flange is arranged between the second cylinder and the third cylinder, the second transition sleeve is arranged between the second screw and the third screw, and the second annular flow passage is communicated with the second cylinder and the third cylinder.
8. The extrusion apparatus with automatic air exhaust function as recited in claim 7, wherein the end edge of the second transition sleeve adjacent to the third screw is provided with a plurality of second flow passage notches, and the second flow passage notches are communicated with the corresponding openings.
9. The extrusion apparatus with automatic air exhaust function as claimed in claim 8, wherein a positioning ring is further disposed on the second transition sleeve, and the other end of the fourth screw abuts against the positioning ring.
10. The extrusion apparatus with automatic air exhaust function according to any one of claims 1 to 9, further comprising an auxiliary air exhaust assembly connected to the air exhaust port and used for sucking moisture at the air exhaust port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111079498.1A CN113799363A (en) | 2021-09-15 | 2021-09-15 | Extrusion equipment with automatic exhaust function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111079498.1A CN113799363A (en) | 2021-09-15 | 2021-09-15 | Extrusion equipment with automatic exhaust function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113799363A true CN113799363A (en) | 2021-12-17 |
Family
ID=78941023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111079498.1A Pending CN113799363A (en) | 2021-09-15 | 2021-09-15 | Extrusion equipment with automatic exhaust function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113799363A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050047267A1 (en) * | 2001-10-12 | 2005-03-03 | Detlef Gneuss | Extruder for producing molten plastic materials |
| CN101823327A (en) * | 2010-05-10 | 2010-09-08 | 广东轻工职业技术学院 | Seven planet screw combination device and method for plastifing, exhausting and extruding |
| CN101837633A (en) * | 2010-03-31 | 2010-09-22 | 广东轻工职业技术学院 | Embedded planetary-screw pulsation plasticizing exhaust extruder and method |
| US20140245891A1 (en) * | 2013-03-01 | 2014-09-04 | Detlef Gneuss | Extruder |
| CN203888184U (en) * | 2014-06-03 | 2014-10-22 | 东莞市吉鑫高分子科技有限公司 | Multi-screw type thermoplastic polyurethane extruding machine |
| CN110573318A (en) * | 2017-05-23 | 2019-12-13 | 格诺伊斯有限责任公司 | Extruder screw for a multi-screw extruder for extruding plastics |
| WO2021008660A1 (en) * | 2019-07-18 | 2021-01-21 | Gneuss Gmbh | Extruder for the viscosity-increasing preparation of meltable polymers |
| CN113165248A (en) * | 2018-11-28 | 2021-07-23 | 格诺伊斯有限责任公司 | Method for processing solid polymer particles of polycondensates by means of a multi-rotating system |
| CN216100330U (en) * | 2021-09-15 | 2022-03-22 | 青岛新大成塑料机械有限公司 | Extrusion equipment with automatic exhaust function |
-
2021
- 2021-09-15 CN CN202111079498.1A patent/CN113799363A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050047267A1 (en) * | 2001-10-12 | 2005-03-03 | Detlef Gneuss | Extruder for producing molten plastic materials |
| CN101837633A (en) * | 2010-03-31 | 2010-09-22 | 广东轻工职业技术学院 | Embedded planetary-screw pulsation plasticizing exhaust extruder and method |
| CN101823327A (en) * | 2010-05-10 | 2010-09-08 | 广东轻工职业技术学院 | Seven planet screw combination device and method for plastifing, exhausting and extruding |
| US20140245891A1 (en) * | 2013-03-01 | 2014-09-04 | Detlef Gneuss | Extruder |
| CN203888184U (en) * | 2014-06-03 | 2014-10-22 | 东莞市吉鑫高分子科技有限公司 | Multi-screw type thermoplastic polyurethane extruding machine |
| CN110573318A (en) * | 2017-05-23 | 2019-12-13 | 格诺伊斯有限责任公司 | Extruder screw for a multi-screw extruder for extruding plastics |
| CN113165248A (en) * | 2018-11-28 | 2021-07-23 | 格诺伊斯有限责任公司 | Method for processing solid polymer particles of polycondensates by means of a multi-rotating system |
| WO2021008660A1 (en) * | 2019-07-18 | 2021-01-21 | Gneuss Gmbh | Extruder for the viscosity-increasing preparation of meltable polymers |
| CN216100330U (en) * | 2021-09-15 | 2022-03-22 | 青岛新大成塑料机械有限公司 | Extrusion equipment with automatic exhaust function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216100330U (en) | Extrusion equipment with automatic exhaust function | |
| CN110421818B (en) | Plastic extruder with temperature-adjustable extrusion barrel | |
| EP2168743A1 (en) | Melting-kneading deaeration extruder | |
| US4154535A (en) | Screw-type plastics extruder | |
| CN113799363A (en) | Extrusion equipment with automatic exhaust function | |
| CN216100335U (en) | Multi-section exhaust type extruder | |
| CN1775506A (en) | Planetary screw chaos trigger extruding method and apparatus | |
| CN113829607A (en) | Multi-stage vented extruder and method of use | |
| JP4738073B2 (en) | Extrusion method of strip rubber for tire component and strip rubber extrusion system | |
| CN210525797U (en) | Plastic extruder | |
| CN106426630B (en) | Method and equipment for preventing material overflow in continuous dehydration and drying process by vacuum auxiliary screw extrusion of rubber | |
| CN214926957U (en) | Double screw extruder is with preventing popping material vacuum exhaust apparatus | |
| CN212826751U (en) | Anti-adhesion screw for extruder | |
| CN113561446A (en) | Double-stage extruder set for MMA continuous polymerization extrusion | |
| CN217196847U (en) | High-efficient broken cavity grid plate granulation extruder of exempting from | |
| CN212219218U (en) | Double-screw extruder for sealant production | |
| CN219988420U (en) | Screw machine of plate extruder | |
| CN218196767U (en) | Exhaust type injection molding machine material barrel device | |
| CN218640296U (en) | Strip extruding machine with cooling function | |
| CN214324132U (en) | High-efficient plastify exhaust extruder | |
| CN210026176U (en) | Double-screw extrusion device of injection molding machine | |
| CN213440241U (en) | Extruder for preparing glass fiber reinforced concrete | |
| CN212147460U (en) | Extrusion device is used in plastic bag production | |
| CN214092296U (en) | Melt metering pump | |
| CN209832282U (en) | Plasticizing and toughening device for waste rubber and plastic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |