CN219427416U - Extruder with pressurizing spiral coil at rear end - Google Patents
Extruder with pressurizing spiral coil at rear end Download PDFInfo
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- CN219427416U CN219427416U CN202320677858.6U CN202320677858U CN219427416U CN 219427416 U CN219427416 U CN 219427416U CN 202320677858 U CN202320677858 U CN 202320677858U CN 219427416 U CN219427416 U CN 219427416U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses an extruder with a pressurizing spiral coil at the rear end, which comprises an extrusion motor, a reduction gearbox, a screw, a feeding mechanism, a machine barrel and a shell, wherein the extrusion motor drives the screw to rotate in the machine barrel through the reduction gearbox, the machine barrel is arranged in the shell, the front end part of the machine barrel extends out of the shell, the feeding mechanism is arranged above the front end part, the screw is divided into three parts from the front end to the rear end and is respectively provided with a feeding section, a mixing section and a compression section, the compression section at the rear end of the screw is additionally provided with the pressurizing spiral coil, the pressurizing spiral coil is sleeved and fixed on the screw, the screw edge angle of the pressurizing spiral coil is the same as the screw edge angle of the compression section of the screw, the inner diameter of the pressurizing spiral coil is larger than the screw edge outer diameter of the screw, and the screw edge lower width of the pressurizing spiral coil is gradually increased from the front end to the rear end. The utility model can increase the pressure of the material at the rear section of the extruder, improve the rate of the material passing through the outlet, and reduce the production cost and the machine halt time.
Description
Technical Field
The utility model relates to an extruder used in the production of lithium battery diaphragms, in particular to an extruder with a pressurizing spiral coil at the rear end, belonging to the field of diaphragm production and processing.
Background
An important process in the production of the polyethylene lithium battery diaphragm is extrusion molding, and the requirements on an extruder are that several raw materials can be blended, homogenized and plasticated, and a uniformly filled polymer is pushed into the next link step by step.
Presently common extruders are single screw extruders and twin screw extruders. The inner diameter of the cylinder body of the single screw rod is the same as the outer diameter of the screw edges of the screw rod, the screw grooves of the designed and manufactured screw rod are gradually shallower from deep, the diameter of the screw grooves is also changed from small to large, the space in the screw rod is changed from large to small, the space is smaller and smaller when the screw rod extrudes materials forwards, and the pressure of the materials is increased. But the self-cleaning rate of the screw groove of the single screw is low, and the mixing and stirring of materials are extremely small, so that the single screw extruder is rarely applied and only used for processing materials with low requirements. The two screws of the conical double-screw extruder are all conical, and the rotation speed of the whole screw is the same, but the diameter is gradually reduced, the space is smaller and smaller, the pressure is naturally increased, and the conical double-screw extruder is suitable for materials which are sensitive to shearing and are easy to decompose in a plasticizing state. But the two screws are integrally processed, if one screw is damaged, the whole screw is scrapped. In addition, the conical double screw is troublesome to assemble and disassemble at ordinary times, the length is limited, the conical double screw cannot be long like the parallel double screw, and the conical double screw can be randomly adjusted front and back like building blocks, so that the occupancy of the conical double extruder in the plastic industry is low.
At present, a parallel double-screw extruder is a main machine type in the plastic industry. However, the parallel twin-screw extruder has the disadvantage that the extrusion pressure on the plastic is not high. When plastic with low melting temperature or more impurities in raw materials are encountered, the filter screen needs to be replaced frequently. The prior solution is to make a good plasticizing material by using a parallel double-screw extruder, and then throw the plasticizing material into a single-screw extruder to make one-time pressurized extrusion granulation or pressurized extrusion molding, which is called a double-stage machine in the industry. Also, after twin screw extrusion, a gear pump was connected to increase the extrusion pressure of the material. But these clearly add to the process and cost.
Disclosure of Invention
The utility model aims to provide an extruder with a pressurizing spiral coil at the rear end, and the extruding efficiency of the extruder is improved by the aid of the pressurizing spiral coil.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides an extruder that pressure boost helical coil is equipped with is added to rear end, includes extrusion motor, reduction gear box, screw rod, feeding mechanism, barrel and shell, the horizontal level of screw rod sets up in the center department of barrel to its front end is connected with extrusion motor through reduction gear box, extrusion motor drives the screw rod and rotates in the barrel, the barrel sets up in the shell, and the front end of barrel stretches out the shell and the top of this tip is equipped with feeding mechanism, the screw rod divide into triplex from the front end to the rear end, is charging section, mixing section and compression section respectively, the compression section of screw rod rear end is equipped with pressure boost helical coil, pressure boost helical coil suit is fixed on the screw rod, pressure boost helical coil's spiral angle is the same with the spiral angle of screw rod, and pressure boost helical coil's internal diameter is greater than the spiral external diameter of screw rod, and pressure boost helical coil's spiral width is increased gradually under the spiral angle from the front end to the rear end.
Further, feeding mechanism includes feed bin, screw pump and lower hopper, the entry of screw pump is connected to the bottom outlet of feed bin, and the hopper is down connected through the conveying pipe connection that sets up perpendicularly to the outlet of screw pump, the exit linkage barrel of hopper and with the inside intercommunication of barrel down.
Further, the front end of the shell is provided with a first oil filling port and a second oil filling port for conveying white oil raw materials, the first oil filling port and the second oil filling port penetrate through the shell and are communicated with the inside of the machine barrel, the first oil filling port is located at one side of the screw feeding section, close to the blanking hopper, and the second oil filling port is located at the tail of the screw feeding section.
Further, a gap is reserved between the outer wall of the machine barrel and the inner wall of the shell, and a temperature control mechanism is arranged on the shell.
Further, the temperature control mechanism comprises a heating tile, a temperature control water circulating pipe and a temperature control water return valve.
Further, the length of the booster spiral coil is consistent with the length of the screw compression section.
Further, the upper width of the screw rib of the pressurizing spiral coil is larger than that of the screw rib of the screw.
Further, the angle of the edges of the booster spiral coil and the screw is 14 degrees.
Further, the end of the screw is provided with an extrusion head.
Furthermore, the mixing section of the screw is also provided with a pressurizing spiral coil which is connected with the pressurizing spiral coil of the compression section in series.
The beneficial effects of the utility model are as follows: when the extrusion pressure and the extrusion speed of the existing extruder do not meet the production requirement, the cost of replacing the extruder or the screw is high, and the spiral coil is additionally arranged, so that the pressure of the material at the rear section of the extruder can be increased, the speed of the material passing through the outlet is improved, meanwhile, the production cost and the machine halt time can be reduced, and the extrusion efficiency of the extruder and the effective operation rate of equipment are improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic view of the overall structure of an extruder of the present utility model;
FIG. 2 is a cross-sectional view of the extruder of the present utility model;
FIG. 3 is a schematic view of the screw and barrel lengths of the present utility model;
FIG. 4 is a schematic view of a screw of the screw compression section of the present utility model;
FIG. 5 is a schematic view of the structure of the tail end of the screw of the present utility model;
FIG. 6 is a schematic view of the booster spiral coil of the present utility model;
fig. 7 is a schematic illustration of the booster spiral coil attachment of the present utility model.
Marked in the figure as: the device comprises a 1-extrusion motor, a 2-reduction gear box, a 3-bearing, a 4-screw, a 5-machine barrel, a 6-shell, a 7-pressurizing spiral coil, an 8-storage bin, a 9-screw pump, a 10-blanking hopper, an 11-first oil filling port, a 12-second oil filling port, a 13-heating tile, a 14-temperature control water circulating pipe, a 15-temperature control water return valve and a 16-extrusion head.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in figures 1 and 2, an extruder with a pressurizing spiral coil at the rear end comprises an extrusion motor 1, a reduction gear box 2, a screw 4, a feeding mechanism, a machine barrel 5 and a shell 6, wherein the screw 4 is horizontally arranged at the center of the machine barrel 5, the front end of the screw 4 is connected with the extrusion motor 1 through the reduction gear box 2, the extrusion motor 1 drives the screw 4 to rotate in the machine barrel 5, the machine barrel 5 is arranged in the shell 6, the front end part of the machine barrel 5 extends out of the shell, the feeding mechanism is arranged above the end part, the screw 5 is divided into three parts from the front end to the rear end, namely a feeding section, a mixing section and a compression section, the pressurizing spiral coil 7 is additionally arranged at the compression section of the rear end of the screw 5, and the pressurizing spiral coil 7 is fixedly sleeved on the screw 5.
In this embodiment, feeding mechanism includes feed bin 8, screw pump 9 and lower hopper 10, the entry of screw pump 9 is connected to the bottom export of feed bin 8, and the export of screw pump 9 passes through the conveying pipe connection that sets up perpendicularly and lower hopper 10, the export of lower hopper 10 is connected barrel 5 and is communicate with barrel 5 inside.
In this embodiment, the front end of the housing 6 is provided with a first oil filling port 11 and a second oil filling port 12 for conveying white oil raw materials, the first oil filling port 11 and the second oil filling port 12 penetrate through the housing 6 and are communicated with the inside of the machine barrel 5, the first oil filling port 11 is located at one side of the screw feeding section, which is close to the blanking hopper, and the second oil filling port 12 is located at the tail of the screw feeding section.
In this embodiment, a gap is left between the outer wall of the barrel 5 and the inner wall of the housing 6, and a temperature control mechanism is arranged on the housing 6, and the temperature control mechanism comprises a heating tile 13, a temperature control water circulating pipe 14 and a temperature control water return valve 15.
The working principle of the extruder is as follows: the temperature of the machine barrel 5 is set at a process value and kept stable through a heating tile 13 and temperature control circulating water, the extrusion motor 1 is started, the extrusion motor 1 drives a gear box, the gear box drives a screw 4 of the extruder to rotate, meanwhile, materials in a storage bin 8 enter the machine barrel 5 of the extruder from a blanking pipe at a constant speed through a screw pump 9, are conveyed through a conveying section of the screw 4, are respectively mixed and sheared with the incoming materials of a first oil filling port 11 and a second oil filling port 12 (raw material white oil is conveyed through an oil filling pipeline), and are compressed through a compression section of the screw 4, and then are extruded into a machine head.
As shown in fig. 3 to 5, the diameter D of the screw 4 is 110mm, the screw length H is 3600mm, and the compression section length H 1 1000mm, length of kneading block H 2 800mm length of charging section H 3 1800mm, a groove depth h of 35mm, a screw rib upper width S of 10mm, and a screw rib lower width S 1 40mm and the screw angle theta is 14 degrees. The extrusion head at the tail end of the screw rod is of length H 5 Regular half cylinders of 80mm and 20mm cut width d. Barrel diameter H 4 190mm.
As shown in FIG. 6, the added booster spiral coil 7 has an outer diameter L of 182mm and an inner diameter L 1 180.1mm, length H 1 1000mm, a screw angle theta of 14 degrees and an upper width S of screw edge 3 Is 12mm, the width of the screw edge is 40mm from the extrusion inlet direction (S 1 ) Gradually increase to 46mm (S 2 )，S 2 Slightly greater than S 1 And is away from S 1 Width S under screw edge with length of Xmm X And coil length H 1 Satisfy the relation of the unitary one-time equation (S X =0.006x+40), i.e. the wall thickness of the screw coil is thinner nearer to the extruder inlet, the wall thickness of the screw coil is thicker nearer to the extruder outlet. The material is thereby gradually extruded and the pressure is gradually increased and the rate of passage through the extruder outlet is also increased.
In addition, besides the screw compression section, a plurality of booster spiral coils can be connected in series and applied to the mixing section in the middle of the screw, the screw edges of the mixing section consist of short screw edges with different lengths, screw groove depths, screw edge distances and screw edge angles, and single-circle spiral coils are manufactured according to different screw edge sizes and are added to the screw edges of the mixing section one by one, so that the requirement of high-pressure mixing of materials is met.
As shown in fig. 7, a booster helical coil is mounted to the screw flights. As the screw edges of the spiral coil are widened gradually, the volume of the screw grooves of the screw is reduced gradually, the pressure of the materials in the mixing section is extruded gradually when the materials pass through, and the extrusion rate is accelerated.
The installation process is as follows: because the external diameter of the screw rib of the screw rod is 180mm (110+35+35), and the internal diameter of the pressurizing spiral coil is 180.1mm, which is slightly larger than the external diameter of the screw rib, the screw rod of the extruder is horizontally placed, after the screw rod is placed in liquid nitrogen for cooling and shrinking, the pressurizing spiral coil is horizontally aligned with the screw rod, the spiral coil is rotated until the coil is completely overlapped with the screw rib, then the coil is welded on the screw rod, and the smooth welding part is polished, thus the screw rod after being additionally installed can be used.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It should be understood by those skilled in the art that the above embodiments do not limit the scope of the present utility model in any way, and all technical solutions obtained by equivalent substitution and the like fall within the scope of the present utility model. The utility model is not related in part to the same as or can be practiced with the prior art.
Claims (10)
1. The utility model provides an extruder that pressure boost helical coil is equipped with is added to rear end, includes extrusion motor, reduction gear box, screw rod, feeding mechanism, barrel and shell, the horizontal level of screw rod sets up in the center department of barrel to its front end is connected with extrusion motor through reduction gear box, extrusion motor drives the screw rod and rotates in the barrel, its characterized in that, the barrel sets up in the shell, and the front end of barrel stretches out the shell and the top of this tip is equipped with feeding mechanism, the screw rod divide into three parts from front end to rear end, are charging section, mixing section and compression section respectively, the compression section of screw rod rear end is equipped with pressure boost helical coil additional, pressure boost helical coil suit is fixed on the screw rod, pressure boost helical coil's spiral angle is the same with the spiral angle of screw rod compression section, and pressure boost helical coil's internal diameter is greater than the spiral edge external diameter of screw rod, pressure boost helical coil's spiral edge lower width is from front end to rear end increase gradually.
2. The extruder with the pressurizing spiral coil arranged at the rear end according to claim 1, wherein the feeding mechanism comprises a feed bin, a screw pump and a discharging hopper, the bottom outlet of the feed bin is connected with the inlet of the screw pump, the outlet of the screw pump is connected with the discharging hopper through a feeding pipe which is vertically arranged, and the outlet of the discharging hopper is connected with the machine barrel and is communicated with the interior of the machine barrel.
3. The extruder with a pressurizing spiral coil at the rear end according to claim 1, wherein a first oil filling port and a second oil filling port for conveying white oil raw materials are arranged at the front end of the shell, the first oil filling port and the second oil filling port penetrate through the shell and are communicated with the inside of the machine barrel, the first oil filling port is located at one side of the screw feeding section, which is close to the discharging hopper, and the second oil filling port is located at the tail of the screw feeding section.
4. An extruder with a booster coil attached to the rear end of claim 1, wherein a gap is left between the outer wall of the barrel and the inner wall of the housing, and a temperature control mechanism is provided on the housing.
5. The extruder with a pressurizing spiral coil at the rear end according to claim 4, wherein the temperature control mechanism comprises a heating tile, a temperature control water circulation pipe and a temperature control water return valve.
6. An extruder having a booster coil attached to the rear end of the extruder as defined in claim 1, wherein the booster coil has a length corresponding to the length of the compression section of the screw.
7. An extruder having a booster coil attached to the rear end of the extruder as defined in claim 1, wherein the booster coil has a flight width greater than the flight width of the screw.
8. An extruder having a booster screw attached to the rear end of claim 1, wherein the booster screw and screw have a screw angle of 14 °.
9. An extruder with a booster coil attached to the rear end of the extruder as defined in claim 1, wherein the screw is provided with an extrusion head at the end.
10. An extruder with a booster coil at the rear end of the extruder as defined in claim 1, wherein the kneading section of the screw is also provided with a booster coil which is serially connected with the booster coil of the compression section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320677858.6U CN219427416U (en) | 2023-03-31 | 2023-03-31 | Extruder with pressurizing spiral coil at rear end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320677858.6U CN219427416U (en) | 2023-03-31 | 2023-03-31 | Extruder with pressurizing spiral coil at rear end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219427416U true CN219427416U (en) | 2023-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320677858.6U Active CN219427416U (en) | 2023-03-31 | 2023-03-31 | Extruder with pressurizing spiral coil at rear end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219427416U (en) |
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2023
- 2023-03-31 CN CN202320677858.6U patent/CN219427416U/en active Active
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