CN221271980U - Cooling system of screw extruder discharge gate - Google Patents
Cooling system of screw extruder discharge gate Download PDFInfo
- Publication number
- CN221271980U CN221271980U CN202323387585.0U CN202323387585U CN221271980U CN 221271980 U CN221271980 U CN 221271980U CN 202323387585 U CN202323387585 U CN 202323387585U CN 221271980 U CN221271980 U CN 221271980U
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- China
- Prior art keywords
- air
- inlet pipeline
- air inlet
- cooling system
- screw extruder
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000001125 extrusion Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 16
- 238000005485 electric heating Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000003000 extruded plastic Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses a cooling system of a discharge port of a screw extruder, which comprises a feed hopper of the extruder, a screw cylinder and an extrusion port at the tail part of the screw cylinder, wherein an air inlet pipeline is fixed at one side of the extrusion port, one end of the air inlet pipeline is connected with an air cooler, the other end of the air inlet pipeline is provided with a first air outlet, the side wall of the air inlet pipeline is provided with the discharge port, the discharge port is opposite to the extrusion port and is used for discharging the extrusion port, the outside of the screw cylinder is provided with a closed annular cover, one end of the annular cover, which is close to the air inlet pipeline, is communicated with the first air outlet, and the other end of the annular cover is provided with a second air outlet.
Description
Technical Field
The utility model relates to the field of plastic processing equipment, in particular to a cooling system for a discharge port of a screw extruder.
Background
The plastic screw extruder is widely applied to the production of plastic pipes, plates, profiles, films and the like, is used for a plurality of industries such as construction, packaging, agriculture, automobiles, electronics and the like, and realizes the melting and extrusion molding of plastic raw materials through key steps such as heating, melting, mixing, extrusion, cooling and the like. The working principle of the hot melt extruder is in depth, so that a producer can better apply the equipment, and efficient plastic processing and product manufacturing are realized.
The plastic screw extruder is that plastic raw materials are extruded from the extruder through high extrusion pressure, and the plastic is cooled and shaped immediately after leaving a machine head, otherwise, the plastic screw extruder can deform under the action of adhesion or gravity, and the subsequent processing is affected. The current industrial cooling mode generally adopts water cooling, the water cooling energy consumption is lower, the cooling effect is good, but the water cooling needs better sealing property, the requirement on the precision of equipment is higher, otherwise, the environment and the safety of workshops can be influenced, and the method is generally applicable to large-scale plastic extruders which are fixedly arranged, and is not applicable to small-scale and medium-scale plastic extruders. In addition, a large amount of heat is generated during extrusion plasticizing of the screw barrel, and auxiliary heat dissipation is needed for ensuring stable operation of equipment, so that the company aims to design a comprehensive cooling system for the screw extruder by adopting an air cooling mode.
Disclosure of utility model
In order to make up the defects of the prior art, the utility model provides a cooling system for a discharge port of a screw extruder, which adopts an air cooling mode to rapidly cool extruded plastics, has a simple and reasonable structure, and simultaneously takes away redundant heat generated by extrusion and electric heating of a screw cylinder of the extruder, so as to ensure the normal operation of equipment and improve the problems.
The utility model is realized by the following technical scheme:
The utility model provides a cooling system of screw extruder discharge gate, includes the extrusion mouth of feeder hopper, spiral shell section of thick bamboo and spiral shell section of thick bamboo afterbody of extruder, one side of extrusion mouth is fixed with the air inlet pipeline, air inlet pipeline one end is connected with the air-cooler, and the other end is equipped with first air outlet, the discharge gate has been seted up on the lateral wall of air inlet pipeline, the discharge gate is just to the extrusion mouth for extrusion mouth unloading, the outside of spiral shell section of thick bamboo is equipped with confined annular cover, the one end that the annular cover is close to the air inlet pipeline is linked together with first air outlet, the other end of annular cover is equipped with the second air outlet.
Further preferably, a tee is fixed on the second air outlet, one end of the tee is connected with an air outlet pipe and leads to the outside, and the other end of the tee is connected with an air guide pipe.
Further preferably, the air guide pipe is connected to the screw cylinder at the bottom of the feed hopper.
Further optimally, the air guide pipe is provided with a flow regulating valve.
Further optimally, a filter screen is arranged at one end of the air inlet pipeline, which is close to the air cooler.
Further preferably, a second air guide pipe is arranged on the first air outlet of the air inlet pipeline, and the air inlet pipeline is communicated with the annular cover through the second air guide pipe.
Further preferably, an inclined air deflector is fixed on one side of the discharge port, which is close to the first air outlet.
The beneficial effects of the utility model are as follows:
the system adopts an air cooling mode to cool extruded plastics, avoids adhesion of the extruded plastics, facilitates subsequent processing, is suitable for a medium-and small-sized screw extruder, and is additionally provided with a filter screen at the front end of an air inlet pipeline, so that the cleanliness of cold air flow is improved, and impurities such as dust are prevented from adhering to the plastics to influence the product quality.
In the system, the annular cover is arranged on the screw cylinder, the air inlet pipeline is communicated with the annular cover, and the air flow can also take away redundant heat generated by extrusion and electric heating of the screw cylinder of the extruder, so that the normal operation of equipment is ensured. The air flow is higher than room temperature after passing through the annular cover, the spiral shell section of thick bamboo that the guide duct led to the feeder hopper bottom is installed additional in annular cover exit, carries out supplementary preheating to the plastic raw materials, has reduced spiral shell section of thick bamboo electrical heating's heat loss, and this system structural design is reasonable, and has reduced the power consumption, is suitable for the application.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic cross-sectional structure of the present utility model.
FIG. 3 is a schematic longitudinal section of the feed hopper of the present utility model.
In the figure: 1. a screw cylinder; 11. a fixed block; 12. a screw; 2. an extrusion port; 3. a feed hopper; 4. a cold air duct; 41. a discharge port; 42. a first air outlet; 5. an air cooler; 6. a second air guide pipe; 7. an annular cover; 71. a second air outlet; 8. a tee joint; 81. an air outlet pipe; 82. a flow regulating valve; 83. an air guide pipe; 9. a filter screen; 10. a conveyor belt.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "left", "right", "front", "rear", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1-3, the utility model provides a cooling system for a discharge port of a screw extruder, which comprises a feed hopper 3, a screw cylinder 1 and an extrusion port 2 at the tail of the screw cylinder of the extruder, wherein an air inlet pipeline 4 is fixed at one side of the extrusion port 2, one end of the air inlet pipeline 4 is connected with an air cooler 5, the other end of the air inlet pipeline is provided with a first air outlet 42, a discharge port 41 is arranged on the side wall of the air inlet pipeline 4, the discharge port 41 is opposite to the extrusion port 2, the extrusion port 2 is used for discharging, the air cooler works, plastics are rapidly cooled and shaped through the air inlet pipeline, and are conveyed by a conveying belt 10 to carry out the next process.
The outside of spiral shell section of thick bamboo 1 is equipped with confined annular cover 7, be equipped with second guide duct 6 on the first air outlet 42 of air inlet duct 4, annular cover 7 is close to the one end of air inlet duct, is linked together with air inlet duct 4 through second guide duct 6, the other end of annular cover 7 still is equipped with second air outlet 71. After the air cooler works and the air flow cools and shapes the extruded plastic, a part of the air flow is dispersed from the discharge hole 41, a part of the air flow flows into the annular cover 7 through the first air outlet 42 and the second air guide pipe 6, flows out from the second air outlet 71, takes away redundant heat generated by extrusion and electric heating of the screw cylinder of the extruder, ensures that the equipment keeps normal temperature, and ensures that the equipment normally operates.
As a preferred embodiment, the second air outlet 71 is fixed with a tee joint 8, one end of the tee joint is connected with an air outlet pipe 81 leading to the outside, the other end is connected with an air guide pipe 8, and the air guide pipe 8 is connected to a screw cylinder at the bottom of the feed hopper 3. The air flow passing through the annular cover 7 is higher than the room temperature, and the screw barrel with the air guide pipe at the outlet of the annular cover leading to the bottom of the feed hopper can assist in preheating the plastic raw material, thereby reducing the heat loss of the electric heating of the screw barrel and indirectly reducing the energy consumption of the electric heating.
As a preferred embodiment, the air duct 83 is provided with a flow regulating valve 82, so that the air flow needs to be controlled in actual use, and too large flow can affect the feeding of the feed hopper, and can also melt the raw materials in advance to affect the screw conveying.
As a preferred implementation mode, the air inlet pipeline 4 is provided with a filter screen 9 at one end close to the air cooler 5, and the filter screen is detachably fixed on the air inlet pipeline, so that the air inlet pipeline is convenient to replace. The filter screen can improve the clean degree of cold air flow, avoids impurity adhesion such as dust to plastics, influences product quality.
As a preferred embodiment, an inclined air deflector 43 is fixed on the discharge port 41 near the first air outlet 42, so as to increase the air quantity entering the first air outlet, and the effect is better.
The present utility model is not described in detail in the present application, and is well known to those skilled in the art. Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (7)
1. The utility model provides a cooling system of screw extruder discharge gate, includes the extrusion mouth of feeder hopper, spiral shell section of thick bamboo and spiral shell section of thick bamboo afterbody of extruder, its characterized in that: one side of the extrusion port is fixed with an air inlet pipeline, one end of the air inlet pipeline is connected with an air cooler, the other end of the air inlet pipeline is provided with a first air outlet, a discharge port is formed in the side wall of the air inlet pipeline and is opposite to the extrusion port and used for discharging the extrusion port, a closed annular cover is arranged outside the screw cylinder, one end of the annular cover, which is close to the air inlet pipeline, is communicated with the first air outlet, and the other end of the annular cover is provided with a second air outlet.
2. The cooling system for a discharge port of a screw extruder of claim 1, wherein: the second air outlet is fixedly provided with a tee joint, one end of the tee joint is connected with an air outlet pipe which leads to the outside, and the other end of the tee joint is connected with an air guide pipe.
3. The cooling system for a discharge port of a screw extruder of claim 2, wherein: the air guide pipe is connected to the screw cylinder at the bottom of the feed hopper.
4. A cooling system for a discharge port of a screw extruder as claimed in claim 3, wherein: and a flow regulating valve is arranged on the air guide pipe.
5. The cooling system for a discharge port of a screw extruder of claim 1, wherein: and a filter screen is arranged at one end of the air inlet pipeline, which is close to the air cooler.
6. The cooling system for a discharge port of a screw extruder of claim 1, wherein: the first air outlet of the air inlet pipeline is provided with a second air guide pipe, and the air inlet pipeline is communicated with the annular cover through the second air guide pipe.
7. The cooling system for a discharge port of a screw extruder of claim 2, wherein: and an inclined air deflector is fixed on one side of the discharge hole, which is close to the first air outlet.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221271980U true CN221271980U (en) | 2024-07-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |