CN204914514U - A melt pump for extruder - Google Patents
A melt pump for extruder Download PDFInfo
- Publication number
- CN204914514U CN204914514U CN201520638308.9U CN201520638308U CN204914514U CN 204914514 U CN204914514 U CN 204914514U CN 201520638308 U CN201520638308 U CN 201520638308U CN 204914514 U CN204914514 U CN 204914514U
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- axle sleeve
- driven
- driving wheel
- tooth axle
- driving
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- Expired - Fee Related
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Abstract
The utility model relates to a melt pump for extruder, the power distribution box comprises a box body, a pair of installation respectively in the end cover at box both ends, driving gear and the driven gear of setting in the box, the driving gear includes action wheel and driving tooth axle, driven gear includes from driving wheel and driven tooth axle, the action wheel meshes with the follow driving wheel mutually, the action wheel both ends are equipped with respectively rotates the lubricated axle sleeve that supports the driving tooth axle, it also is equipped with the lubricated axle sleeve that rotates the driven tooth axle of support respectively to follow the driving wheel both ends, be equipped with the lubrication groove on the lubricated axle sleeve pore wall, two pairs of lubricated axle sleeves all are located the box, driving tooth axle both ends are overlapped respectively and are equipped with the anti - thread sealing cover that lies in the lubricated axle sleeve outside. The utility model has the characteristics of the meshing is smooth and easy, the noise low, the vibration is little, high temperature resistant, corrosion -resistant, high reliability etc, can realize the output accurate control, improve the size precision of product.
Description
Technical field
The utility model relates to a kind of Melt Pump for extruder.
Background technology
Stability of flow Melt Pump major function sends into extruder head by from after the hot plastic melt supercharging of extruder, voltage stabilizing, the ability of its stable melting material pressure, flow is better than various types of extruder, it is connected with singe screw or parallel dual-screw extruding machine when using, just make the remarkable benefit of whole production line increase.Smelt gear pump has been widely used on the production lines such as chemical fibre, granulation, plastic sheeting, sheet material, sheet material, section bar, tubing, electric wire, wire drawing, compound extruded, machinable material almost covers most of macromolecular material, as: PE, PC, PP, PVC, HIPS, PS, PA, TPUR, fluoropolymer, polysulfones, polyester, thermoplastic elastomer (TPE), rubber and hot binder etc.
Along with market requires to improve constantly to the production efficiency of Melt Pump, as extruder being stablized the Melt Pump of compression portion also more and more to high accuracy, high production capacity, low energy consumption, high reliability development.Melt Pump is still for external product is taken as the leading factor in the market, due to the difference of material and production technology, home products ubiquity that non-refractory, perishable, poor reliability, noise are large, the easy defect such as seepage, cannot meet that Melt Pump is high temperature resistant, corrosion-resistant, the requirement of high reliability.
Utility model content
The technical problems to be solved in the utility model is: based on the problems referred to above, provides a kind of Melt Pump for extruder.
The utility model solves the technical scheme that its technical problem adopts: a kind of Melt Pump for extruder, comprise casing, be installed on the end cap of tank ends for a pair respectively, be arranged on the driving gear in casing and driven gear, driving gear comprises driving wheel and active gear shaft, driven gear comprises driven pulley and driven tooth axle, driving wheel is meshed with driven pulley, driving wheel two ends are respectively equipped with the lubricative axle sleeve of rotational support active gear shaft, driven pulley two ends are also respectively equipped with the lubricative axle sleeve of rotational support driven tooth axle, lubricative axle sleeve hole wall is provided with lubrication groove, two pairs of lubricative axle sleeves are all positioned at casing, active gear shaft two ends are respectively installed with the left-hand thread sealing shroud be positioned at outside lubricative axle sleeve.
Described driving wheel and driven pulley surface, active gear shaft and driven tooth axle surface, lubricative axle sleeve surfaces externally and internally and left-hand thread sealing shroud surfaces externally and internally are equipped with scuff-resistant coating, and this scuff-resistant coating is iron nitride coating.
The material of described driving wheel, active gear shaft, driven pulley and driven tooth axle is 20CrNi2MoA.
Described driving wheel and driven pulley are helical gear, and its pressure angle is 25 ° ~ 30 °.
The beneficial effects of the utility model are: casing of the present utility model is integrated case, this Melt Pump has the features such as engagement is smooth and easy, noise is low, it is little to vibrate, high temperature resistant, corrosion-resistant, high reliability, the rotating speed of extrusion capacity and gear pump is linear, can realize accurately controlling output, improve the dimensional accuracy of product.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Wherein: 1. casing, 2. driving wheel, 3. active gear shaft, 4. driven pulley, 5. driven tooth axle, 6. lubricative axle sleeve, 7. left-hand thread sealing shroud.
Detailed description of the invention
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of Melt Pump for extruder as shown in Figure 1, comprise casing 1, be installed on the end cap at casing 1 two ends for a pair respectively, be arranged on the driving gear in casing 1 and driven gear, driving gear comprises driving wheel 2 and active gear shaft 3, driven gear comprises driven pulley 4 and driven tooth axle 5, driving wheel 2 is meshed with driven pulley 4, driving wheel 2 two ends are respectively equipped with the lubricative axle sleeve 6 of rotational support active gear shaft 3, driven pulley 4 two ends are also respectively equipped with the lubricative axle sleeve 6 of rotational support driven tooth axle 5, lubricative axle sleeve 6 hole wall is provided with lubrication groove, two pairs of lubricative axle sleeves 6 are all positioned at casing 1, active gear shaft 3 two ends are respectively installed with the left-hand thread sealing shroud 7 be positioned at outside lubricative axle sleeve 6.
Described driving wheel 2 and driven pulley 4 surface, active gear shaft 3 and driven tooth axle 5 surface, lubricative axle sleeve 6 surfaces externally and internally and left-hand thread sealing shroud 7 surfaces externally and internally are equipped with scuff-resistant coating, and this scuff-resistant coating is iron nitride coating.
The material of described driving wheel 2, active gear shaft 3, driven pulley 4 and driven tooth axle 5 is 20CrNi2MoA.
Described driving wheel 2 and driven pulley 4 are helical gear, and its pressure angle is 25 ° ~ 30 °.
During work, high molecular polymer melt enters in casing 1 from the charging aperture casing 1, by the gap that driving wheel 2 and driven pulley 4 match between tooth, then from the discharging opening injection casing 1, melt enters Melt Pump from charging aperture, the gap that major part melt is engaged with driven pulley 4 by driving wheel 2, material is sent to discharging opening, sub-fraction melt enters in the space between lubricative axle sleeve 6 and active gear shaft 3 and/or driven tooth axle 5 by the lubrication groove on lubricative axle sleeve 6, form the protecting film that one deck is thin, prevent lubricative axle sleeve 6 from forming dry friction with active gear shaft 3 and/or driven tooth axle 5, now have in the annular space that a small amount of melt enters between left-hand thread sealing shroud 7 outer circumference surface and end cap through hole, because left-hand thread sealing shroud 7 outer circumference surface is provided with the left-hand thread for returning charge, thus enter in the material squeezed time casing 1 in annular space, thus serve sealing function, and left-hand thread sealing shroud 7 outer end also has the annular edge extended radially outward, end-face seal ring is provided with between annular edge inner face and relative end cap outer face, in order to improve the sealing of this Melt Pump further.
Utilize Helical gear Transmission can slow down the entrap phenomenon of Melt Pump, lengthen tooth long, intensified pressure angle, makes melt pump delivery strengthen, and can reduce to export pulse.Adopt advanced gear-grinding process, all gears all adopt German shaping mill, and the accuracy of gear reaches DIN3960-675 class precision simultaneously.
Because the temperature of high molecular polymer melt is higher, some material also has corrosivity, and traditional gear heat treatment method cannot meet the requirement of this Melt Pump.Consider temperature of charge and corrupting influence, adopt nitrizing quenching technology, make gear surface have high temperature resistance, corrosion resistant coating, under the operating temperature of 500 DEG C, still can keep higher hardness, thus add the wearability of gear, and improve service life.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (4)
1. the Melt Pump for extruder, comprise casing (1), be installed on the end cap at casing (1) two ends for a pair respectively, be arranged on the driving gear in casing (1) and driven gear, driving gear comprises driving wheel (2) and active gear shaft (3), driven gear comprises driven pulley (4) and driven tooth axle (5), driving wheel (2) is meshed with driven pulley (4), it is characterized in that: described driving wheel (2) two ends are respectively equipped with the lubricative axle sleeve (6) of rotational support active gear shaft (3), driven pulley (4) two ends are also respectively equipped with the lubricative axle sleeve (6) of rotational support driven tooth axle (5), lubricative axle sleeve (6) hole wall is provided with lubrication groove, two pairs of lubricative axle sleeves (6) are all positioned at casing (1), active gear shaft (3) two ends are respectively installed with the left-hand thread sealing shroud (7) being positioned at lubricative axle sleeve (6) outside.
2. a kind of Melt Pump for extruder according to claim 1, it is characterized in that: described driving wheel (2) and driven pulley (4) surface, active gear shaft (3) and driven tooth axle (5) surface, lubricative axle sleeve (6) surfaces externally and internally and left-hand thread sealing shroud (7) surfaces externally and internally are equipped with scuff-resistant coating, and this scuff-resistant coating is iron nitride coating.
3. a kind of Melt Pump for extruder according to claim 1, is characterized in that: the material of described driving wheel (2), active gear shaft (3), driven pulley (4) and driven tooth axle (5) is 20CrNi2MoA.
4. a kind of Melt Pump for extruder according to claim 1, is characterized in that: described driving wheel (2) and driven pulley (4) are helical gear, and its pressure angle is 25 ° ~ 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638308.9U CN204914514U (en) | 2015-08-21 | 2015-08-21 | A melt pump for extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638308.9U CN204914514U (en) | 2015-08-21 | 2015-08-21 | A melt pump for extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204914514U true CN204914514U (en) | 2015-12-30 |
Family
ID=54963687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638308.9U Expired - Fee Related CN204914514U (en) | 2015-08-21 | 2015-08-21 | A melt pump for extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204914514U (en) |
-
2015
- 2015-08-21 CN CN201520638308.9U patent/CN204914514U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20180821 |