Energy-saving high-productivity PP plastic extruder
By using a heating structure composed of ceramic heating rings and a permanent magnet energy-saving motor in the PP plastic extruder, the problems of insufficient production capacity and low heating efficiency of the existing PP plastic extruder are solved, and efficient and energy-saving production is achieved.
Patent Information
- Application Number
- CN202422349686.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing PP plastic extruders have insufficient production capacity, high machine loss and maintenance costs, and low heating efficiency, which cannot meet the needs of efficient production.
The heating structure consisting of ceramic heating rings is equipped with air-cooled structure and thermal insulation cotton cover, combined with a permanent magnet energy-saving motor and an elastomeric coupling, improves heating efficiency and transmission efficiency, and accurately controls the temperature through a thermocouple.
The heating energy-saving efficiency of the barrel is improved by 20-30%, which greatly improves output, reduces maintenance costs and energy consumption, and achieves efficient production.
Smart Images
Figure CN223071917U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an improved invention of a PP plastic sheet extrusion production line, in particular to an improved invention of an energy-saving and high-capacity PP plastic extruder. Background Art
[0002] PP plastics are widely used in various fields of daily life. In the packaging field, PP plastic bags are one of the most common applications. PP plastic bags have good toughness and durability and can be used to package various products such as food, household items, and cosmetics. In addition, PP plastics can also be made into various packaging boxes, bottles, and containers for protecting and displaying goods. In the automotive industry, PP plastics also play an important role. It can be used to make automotive interior parts, body components, and storage boxes, etc.
[0003] Compared with previous PP plastic extruders, the main motor driving the screw is an ordinary three-phase asynchronous motor, the coupling is a flange direct connection type processed by oneself, and some brands of internal gears and bearings in the speed reducer have low machining accuracy. At high motor speeds, the service life is shortened. The screw machining accuracy is not high, and the output has never reached the theoretical output corresponding to the screw. The barrel heating coil is not energy-saving, and it takes a long time to heat up to the set temperature. Due to such a matching method before, the PP plastic extruder has low production capacity, the products made by the machine are of a single type, and the loss and maintenance costs of the machine are high. Content of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an energy-saving and high-capacity PP plastic extruder.
[0005] To solve the above technical problems, the utility model is implemented by adopting the following technical scheme: This energy-saving and high-capacity PP plastic extruder includes a frame, on which a barrel, a screw located inside the barrel, and a power source for driving the screw are provided. It is characterized in that: a material viewing seat is provided at the upper end of the barrel, a through-feed hopper is provided at the top of the material viewing seat, and a blanking gate is provided at the upper end of the material viewing seat. A magnetic rack is provided inside the feed hopper, and a first visual window is provided on the feed hopper, and a second visual window is provided on the material viewing seat; several ceramic heating coils are provided on the outer surface of the barrel. Each ceramic heating coil is composed of several heating coil cores. Adjacent two ceramic heating coil cores can be connected by sheet metal bolts. The ceramic heating coil is equipped with an outer cover shell with heat insulation cotton. An air inlet is provided below the ceramic heating coil, and a cooling fan is provided at the air inlet. A thermocouple is threadedly connected to the central axis of the upper surface of the barrel. An extruder water cooling structure is also provided on the frame, and a head extrusion component is provided at the output end of the barrel.
[0006] A screw support plate fixing plate is welded on the frame. A screw support plate is fixed on the screw support plate fixing plate. The screw support plate fixedly supports the barrel. The lower end of the screw support plate is tightened by a screw support plate top block, and the corresponding screw support plate top block is fixed on the screw support plate fixing plate.
[0007] The power source includes a permanent magnet energy-saving motor, a speed reducer and an elastic coupling connecting the two. A coupling outer cover is arranged outside the elastic coupling.
[0008] Both the first visual window and the second visual window are made of plexiglass and their fixing blocks.
[0009] A discharge gate plate is further arranged on the material viewing seat, and the discharge gate plate is provided with a discharge gate block.
[0010] The beneficial effect of the present utility model is an improved energy-saving and high-production PP plastic extruder. By designing the heating component of the barrel to be composed of a plurality of ceramic heating coils, and arranging a wind cooling structure and an outer cover shell with heat insulation cotton on each ceramic heating coil, when a certain ceramic heating coil is likely to burn the material due to too high heating temperature, the material in this part can be cooled by the cooling structure on the core of the ceramic heating coil corresponding to this part, so that the heating temperature of the material in this part is reduced to an appropriate heating temperature, thereby ensuring the melting quality of the material and improving the energy-saving efficiency to 20 - 30%, greatly improving the heating energy-saving efficiency of the barrel and the output of the extruder. Description of the Drawings
[0011] The following further details the specific implementation manners of the present utility model with reference to the drawings.
[0012] Figure 1 It is a schematic structural diagram of the present utility model.
[0013] Figure 2 It is a three-dimensional structural diagram of the present utility model.
[0014] Figure 3 For the present utility model Figure 2 Enlarged view of part B.
[0015] Figure 4 It is a right view of the structure of the present utility model.
[0016] Figure 5 For the present utility model Figure 4 Sectional view A - A. Specific Implementation Manner
[0017] The drawings show the structure of the present utility model, and the following further explains its relevant details with reference to the drawings. In this embodiment, refer to the attached Figures 1-5, The energy-saving and high-capacity PP plastic extruder includes a machine frame 1. On the machine frame 1, there is a barrel 6, a screw 7 located inside the barrel 6, and a power source for driving the screw 7. At the upper end of the barrel 6, there is a material-watching seat 11. At the top of the material-watching seat 11, there is a through-feed hopper 17. And at the upper end of the material-watching seat 11, there is a feeding gate 12. Inside the feed hopper 17, there is a magnetic rack 19 which is used to suck out the iron impurities in the material, thus protecting the screw 7. And on the feed hopper 17, there is a first visual window 18, and on the material-watching seat 11, there is a second visual window 13, which is convenient for observing how much material is left during the production process and can quickly discharge the material when replacing the material; On the outer surface of the barrel 6, there are several ceramic heating coils 20. The ceramic heating coils 20 are equipped with an outer cover shell with heat insulation cotton. The ceramic heating coils 20 are composed of several heating coil cores. Adjacent two ceramic heating coil cores can be connected by sheet metal bolts, which can heat more precisely and realizes the detachable connection of each heating core. When a problem occurs in a certain part of the ceramic heating coil 20, it is not necessary to replace the entire outer cover of the ceramic heating coil 20. Just replace the heating device corresponding to the ceramic heating core with a problem inside the ceramic heating coil 20, which greatly reduces the maintenance cost; Below the ceramic heating coil 20, there is an air inlet, and the air inlet is equipped with a cooling fan 21 to accurately control the temperature and improve the effect of material dredging; On the central axis of the upper surface of the barrel 6, there is a thermocouple 22 connected by threads. One end of the thermocouple 22 passes through the ceramic heating coil 20. The thermocouple 22 is used to detect the material temperature when the material flows in the barrel 6 and transmit the temperature signal to the processing device, so that when the extruder is working, it can accurately detect whether the temperature of the material in each material hole of the ceramic heating coil 20 on the barrel 6 is within the standard range. If the temperature exceeds the standard, the cooling fan 21 at the bottom of the ceramic heating coil 20 can cool the material in time; On the machine frame 1, there is also an extruder water cooling structure, and the water cooling structure makes the temperature of the feeding port of the barrel 6 lower and easier to feed, ensuring the stability of material transportation; At the output end of the barrel 6, there is a head extrusion component 24.
[0018] As a specific implementation of further improvement, on the machine frame 1, there is a screw support plate fixing plate 8 welded. On the screw support plate fixing plate 8, there is a screw support plate 9 fixed. The screw support plate 9 fixedly supports the barrel 6. The lower end of the screw support plate 9 is tightened by a screw support plate top block 10, and the corresponding screw support plate top block 10 is fixed on the screw support plate fixing plate.
[0019] As a specific embodiment of further improvement, the water cooling structure of the extruder includes a water inlet of barrel 6, a water return port of barrel 6, a condenser water inlet of the speed reducer 2, and a condenser water return port of the speed reducer 2. The water inlet of barrel 6 is located below the feeding port, the water return port hole of barrel 6 is located above the feeding port, the condenser water inlet of the speed reducer 2 is located at one end of the right side surface of the speed reducer 2, and the condenser water return port of the speed reducer 2 is located at the other end of the right side surface of the speed reducer 2. The water inlet of barrel 6, the water return port of barrel 6, the condenser water inlet of the speed reducer 2, and the condenser water return port of the speed reducer 2 are connected to the cooling water distributor 23 through pipelines. With such a design, the equipment no longer needs to be connected to other pipelines, and only one inlet and one outlet water pipeline need to be connected.
[0020] As a specific embodiment of further improvement, the power source includes a permanent magnet energy-saving motor 3, a speed reducer 2, and an elastomeric coupling 4 connecting the two. An outer cover 5 is provided outside the elastomeric coupling 4. The advantages of selecting the permanent magnet energy-saving motor 3 are: simple structure, small volume, light weight, low loss, high efficiency, and energy saving, with an energy saving ratio 20% - 50% higher than that of ordinary motors. The elastomeric coupling realizes the advantages of transmitting torque with zero clearance and requiring no maintenance. The elastomeric coupling is suitable for connecting two coaxial drive shafts, has the performance of compensating for the relative offset of the two shafts, shock absorption, and buffering, so as to make the transmission between the two shafts of the permanent magnet energy-saving motor 3 and the speed reducer 2 more efficient.
[0021] As a specific embodiment of further improvement, both the first visual window 18 and the second visual window 13 are made of plexiglass and their fixing blocks 14. The plexiglass is positioned by the fixing blocks.
[0022] As a specific embodiment of further improvement, a discharge gate 15 is further provided on the material viewing seat 11, and the discharge gate 15 is equipped with a discharge gate block 16.
[0023] In summary, the above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An energy-saving and high-production-capacity PP plastic extruder, including a frame, on which there is a barrel, a screw located inside the barrel, and a power source for driving the screw, characterized in that: A material viewing seat is provided at the upper end of the barrel. A through-feed hopper is provided at the top of the material viewing seat, and a blanking gate plate is arranged at the upper end of the material viewing seat. A magnetic rack is arranged in the feed hopper, and a first visual window is arranged on the feed hopper, and a second visual window is arranged on the material viewing seat; A number of ceramic heating coils are arranged on the outer surface of the barrel. The ceramic heating coil is composed of a number of heating coil cores. Adjacent two ceramic heating coil cores can be connected by sheet metal bolts. The ceramic heating coil is equipped with an outer cover shell with heat preservation cotton. An air inlet is arranged below the ceramic heating coil, and a cooling fan is arranged at the air inlet. A thermocouple is threadedly connected to the central axis of the upper surface of the barrel. An extruder water cooling structure is also arranged on the frame, and a head extrusion component is arranged at the output end of the barrel.
2. The energy-saving high-capacity PP plastic extruder according to claim 1, wherein: A screw support plate fixing plate is welded on the frame. A screw support plate is fixed on the screw support plate fixing plate. The screw support plate fixedly supports the barrel. The lower end of the screw support plate is tightened by a screw support plate top block, and the corresponding screw support plate top block is fixed on the screw support plate fixing plate.
3. The energy-saving high-production-capacity PP plastic extruder according to claim 1, wherein: The power source includes a permanent magnet energy-saving motor, a speed reducer and an elastic coupling connecting the two. A coupling outer cover is arranged outside the elastic coupling.
4. The energy-saving high-capacity PP plastic extruder according to claim 1, characterized in that: Both the first visual window and the second visual window are made of plexiglass and its fixing pressing block.
5. The energy-saving and high-capacity PP plastic extruder according to claim 1, characterized in that: A discharging gate plate is also arranged on the material viewing seat, and the discharging gate plate is equipped with a discharging gate block.