CN210911096U - Exhaust structure of special conical double-screw extruder for polyolefin - Google Patents
Exhaust structure of special conical double-screw extruder for polyolefin Download PDFInfo
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- CN210911096U CN210911096U CN201921925827.8U CN201921925827U CN210911096U CN 210911096 U CN210911096 U CN 210911096U CN 201921925827 U CN201921925827 U CN 201921925827U CN 210911096 U CN210911096 U CN 210911096U
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- exhaust
- machine barrel
- conical
- polyolefin
- screw
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Images
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- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an exhaust structure of a conical double-screw extruder special for polyolefin, which comprises a machine barrel and a driving box arranged at the tail end of the machine barrel, wherein a pair of conical screws are arranged in the machine barrel, a feed inlet is arranged above the rear end of the machine barrel, an exhaust port is arranged at the tail end of the machine barrel, a plurality of exhaust grooves which are uniformly distributed are arranged on the screw edge of each conical screw, and an exhaust valve is arranged in each exhaust port; a motor is arranged in the driving box, and a motor shaft of the motor is in transmission connection with the tail end of the conical screw through a bevel gear; the utility model is provided with the exhaust port on the machine barrel for exhausting, and the exhaust valve is arranged in the exhaust port, which can accurately adjust the exhaust volume, thereby ensuring that the internal pressure of the machine barrel meets the production and processing requirements of polyolefin; the gas vent sets up the rear end at the feed inlet, and installs the striker plate between gas vent and the feed inlet, can prevent that the feeding from blockking up the gas vent, guarantees that the gas vent is unblocked.
Description
Technical Field
The utility model relates to a double screw extruder technical field especially relates to a special toper double screw extruder's of polyolefin exhaust structure.
Background
The conical double-screw extruder has the characteristics of uniform plasticizing and mixing, high yield, stable quality, wide application range, long service life, direct molding of PVC powder and the like. By means of the corresponding die and auxiliary machine, various thermoplastic plastics may be extruded into pipe, plate, sheet, rod, film, etc. and the modification and pelletizing of various plastics may be completed.
Chinese patent publication No. CN 201446668U discloses a venting structure of a conical twin-screw extruder dedicated for polyolefin, which is provided with venting grooves on the screw edges of the feeding section and the compression section of the conical screw, and vents air through the feeding port, thereby reducing venting speed and increasing pressure in the machine barrel, and is used for polyolefin production and processing.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a special toper double screw extruder's of polyolefin exhaust structure can adjust extruder barrel internal pressure, makes things convenient for the production and processing of polyolefin.
In order to solve the technical problem, the utility model provides a following technical scheme:
an exhaust structure of a conical double-screw extruder special for polyolefin comprises a machine barrel and a driving box arranged at the tail end of the machine barrel, wherein a pair of conical screws are arranged in the machine barrel, a feed inlet is arranged above the rear end of the machine barrel, an exhaust port is arranged at the tail end of the machine barrel, a plurality of exhaust grooves which are uniformly distributed are formed in the screw ridges of the conical screws, and exhaust valves are arranged in the exhaust ports; a motor is installed in the driving box, and a motor shaft of the motor is in transmission connection with the tail end of the conical screw through a bevel gear.
As a preferred technical scheme of the utility model, install in the barrel and be located gas vent one side baroceptor.
As an optimal technical scheme of the utility model, install the three-way pipe in the exhaust port, three-way pipe one end and exhaust port intercommunication, both ends communicate with exhaust valve and air pump respectively in addition.
As an optimized technical scheme of the utility model, discharge valve is one-way pneumatic valve.
As an optimal technical scheme of the utility model, conical screw's end is provided with the striker plate, the striker plate is located between feed inlet and the gas vent, just be provided with a plurality of exhaust holes on the striker plate.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
the utility model is provided with the exhaust port on the machine barrel for exhausting, and the exhaust valve is arranged in the exhaust port, which can accurately adjust the exhaust volume, thereby ensuring that the internal pressure of the machine barrel meets the production and processing requirements of polyolefin; the gas vent sets up the rear end at the feed inlet, and installs the striker plate between gas vent and the feed inlet, can prevent that the feeding from blockking up the gas vent, guarantees that the gas vent is unblocked.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view of the conical screw of the present invention;
wherein: 1. a barrel; 2. a drive box; 3. a conical screw; 4. a feed inlet; 5. a striker plate; 6. a motor; 7. an exhaust port; 8. a three-way pipe; 9. an exhaust valve; 10. an air pump; 11. a bevel gear; 12. and an exhaust groove.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Referring to fig. 1-2, an exhaust structure of a conical twin-screw extruder dedicated for polyolefin comprises a machine barrel 1 and a driving box 2 mounted at the tail end of the machine barrel 1, wherein a pair of conical screws 3 are arranged in the machine barrel 1, a feed inlet 4 is arranged above the rear end of the machine barrel 1, a vent 7 is arranged at the tail end of the machine barrel 1, a plurality of exhaust grooves 12 uniformly distributed are arranged on the screw ridges of the conical screws 3, and vent valves 9 are mounted in the vent 7; a motor 6 is installed in the driving box 2, and a motor shaft of the motor 6 is in transmission connection with the tail end of the conical screw rod 3 through a bevel gear 11.
Install in barrel 1 and be located gas vent 7 one side baroceptor, accessible baroceptor monitors the pressure in barrel 1 to conveniently cooperate discharge valve 9 to carry out the accurate regulation to the pressure in barrel 1.
A three-way pipe 8 is installed in the exhaust port 7, one end of the three-way pipe 8 is communicated with the exhaust port 7, the other two ends of the three-way pipe are respectively communicated with the exhaust valve 9 and the air pump 10, when the pressure in the machine barrel 1 is too large, the exhaust efficiency of the exhaust valve 9 is insufficient, or the pressure in the machine barrel 1 is too small, so that polyolefin production and processing are affected, air can be exhausted through the air pump 10 or air can be fed and pressurized through the air pump 10, and the internal pressure. The exhaust valve 9 is a one-way valve.
The end of the conical screw rod 3 is provided with a baffle plate 5, the baffle plate 5 is positioned between the feed inlet 4 and the exhaust port 7, and the baffle plate 5 is provided with a plurality of exhaust holes, so that the exhaust port 7 can be prevented from being blocked by feeding, and the smoothness of the exhaust port is ensured.
Specifically, when the device uses, feeding mechanism adds the raw materials for in the barrel 1 by feed inlet 4, motor 6 passes through bevel gear 11 drive conical screw 3 and rotates, thereby process the short material of polyolefin that gets into by feed inlet 4, the gas that produces in the course of working can return to the end of barrel 1 from exhaust groove 12, and discharge from gas vent 7, through the degree of opening of adjusting exhaust valve 9 in the gas vent 7, can regulate and control exhaust efficiency, thereby carry out the accurate regulation to the pressure in the barrel 1, guarantee that 1 internal pressure of barrel satisfies the production and processing demand of polyolefin, enable the polyolefin material to obtain mixing and plastify well.
The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.
Claims (5)
1. The exhaust structure of the conical double-screw extruder special for polyolefin comprises a machine barrel (1) and a driving box (2) arranged at the tail end of the machine barrel (1), and is characterized in that a pair of conical screws (3) are arranged in the machine barrel (1), a feed inlet (4) is arranged above the rear end of the machine barrel (1), an exhaust port (7) is arranged at the tail end of the machine barrel (1), a plurality of exhaust grooves (12) which are uniformly distributed are formed in the screw edge of each conical screw (3), and an exhaust valve (9) is arranged in each exhaust port (7); a motor (6) is installed in the driving box (2), and a motor shaft of the motor (6) is in transmission connection with the tail end of the conical screw (3) through a bevel gear (11).
2. The venting structure of a conical twin-screw extruder specially used for polyolefin as claimed in claim 1, wherein an air pressure sensor is installed in the cylinder (1) at one side of the vent (7).
3. The exhaust structure of the conical twin-screw extruder special for polyolefin according to claim 1, wherein a three-way pipe (8) is installed in the exhaust port (7), one end of the three-way pipe (8) is communicated with the exhaust port (7), and the other two ends are respectively communicated with an exhaust valve (9) and an air pump (10).
4. The vent structure of the conical twin-screw extruder special for polyolefin according to claim 3, wherein the vent valve (9) is a one-way air valve.
5. The exhaust structure of the conical twin-screw extruder special for polyolefin according to claim 1, wherein a material baffle plate (5) is arranged at the tail end of the conical screw (3), the material baffle plate (5) is positioned between the feed port (4) and the exhaust port (7), and a plurality of exhaust holes are arranged on the material baffle plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925827.8U CN210911096U (en) | 2019-11-11 | 2019-11-11 | Exhaust structure of special conical double-screw extruder for polyolefin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921925827.8U CN210911096U (en) | 2019-11-11 | 2019-11-11 | Exhaust structure of special conical double-screw extruder for polyolefin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210911096U true CN210911096U (en) | 2020-07-03 |
Family
ID=71359098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921925827.8U Active CN210911096U (en) | 2019-11-11 | 2019-11-11 | Exhaust structure of special conical double-screw extruder for polyolefin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210911096U (en) |
-
2019
- 2019-11-11 CN CN201921925827.8U patent/CN210911096U/en active Active
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