Energy-saving recycled plastic extruder

Abstract

The utility model discloses an energy-saving recycled plastic extruder, which relates to plastic processing machinery and comprises a fixed table, a connecting table is fixedly mounted on the upper surface of the fixed table, a supporting plate is fixedly mounted on the upper surface of the connecting table, and a feeding component is fixedly mounted on the upper surface of the supporting plate. A double-station screen changer is arranged above the side, away from the feeding assembly, of the fixing table, a connecting pipe is fixedly installed on the side, away from the supporting plate, of the double-station screen changer, a plurality of connecting grooves are formed in the connecting pipe and distributed around the center line of the connecting pipe in the circumferential direction, and a discharging pipe is arranged in the connecting pipe. A connecting plate corresponding to a connecting groove is fixedly installed on the outer surface of the discharging pipe, when a worker replaces the discharging pipe of equipment, the discharging pipe is directly taken out through a tool, and a new cooled discharging pipe is placed in the connecting pipe, so that the steps are greatly reduced, the needed time is greatly shortened when multiple pieces of equipment are replaced, and the working efficiency is improved. And the replacement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a plastic processing machine, in particular to an energy-saving recycled plastic extruder. Background Art

[0002] As the consumption of plastic products continues to grow, so too does the amount of plastic waste. Currently, domestic waste plastics primarily include plastic film, plastic yarn and woven fabrics, foam plastics, plastic packaging boxes and containers, household plastic bags, and agricultural mulch. Improper storage, transportation, processing, and disposal of these waste plastics will inevitably damage the environment and endanger public health.

[0003] After a single use, plastics are typically recycled, cleaned, and then reheated, extruded, and pelletized for reuse as raw material. Plastic pelletization is a recycling method that converts waste plastic into pellets through a granulation process. The recycled pellets can be used in molding processes, and the resulting products have similar performance to the original, making them highly valuable.

[0004] After a period of production, the head of the injection molding machine may suffer from mechanical wear and aging, which may lead to a decrease in plasticizing effect and an increase in injection leakage, requiring workers to replace the head of the injection molding machine. During the replacement process, tools are needed to dismantle the old head and replace it with a new one. The steps are relatively cumbersome. When multiple devices are replaced at the same time, the required replacement time is greatly increased, resulting in low replacement efficiency. Therefore, the utility model proposes an energy-saving recycled plastic extruder. Utility Model Content

[0005] In order to solve the above technical problems, an energy-saving recycled plastic extruder is provided to solve the above-mentioned problem of low replacement efficiency.

[0006] In order to achieve the above purpose, the technical solution adopted by this utility model is:

[0007] An energy-saving recycled plastic extruder includes a fixed table, a connecting table is fixedly installed on the upper surface of the fixed table, a support plate is fixedly installed on the upper surface of the connecting table, a feeding assembly is fixedly installed on the upper surface of the support plate, a double-station screen changer is provided above the side of the fixed table away from the feeding assembly, a connecting pipe is fixedly installed on the side of the double-station screen changer away from the support plate, a plurality of connecting grooves are opened inside the connecting pipe, and the plurality of connecting grooves are circumferentially distributed around the center line of the connecting pipe, a discharge pipe is provided inside the connecting pipe, and a connecting plate corresponding to the connecting groove is fixedly installed on the outer surface of the discharge pipe.

[0008] Preferably, a conveying pipe is fixedly installed on the side of the support plate close to the duplex screen changer, the outer surface of the conveying pipe is sleeved with a first fixed pipe, the end of the conveying pipe away from the duplex screen changer is connected to the feed pipe, the outer surface of the conveying pipe is sleeved with a second fixed pipe, the outer surface of the conveying pipe is sleeved with an insulation pipe, and a combination screw is rotatably installed inside the support plate corresponding to the conveying pipe, and the combination screw passes through the conveying pipe and the feed pipe.

[0009] Preferably, the loading assembly includes a buffer bin, and the side of the buffer bin close to the conveying pipe is connected to the third fixed pipe. The inner wall of the buffer bin corresponding to the third fixed pipe is rotatably installed with a rotating shaft, and the outer surface of the rotating shaft is fixedly installed with threaded blades. The end of the third fixed pipe away from the storage tank is connected to the barrel, and the barrel is connected to the conveying pipe.

[0010] Preferably, the connecting groove and the connecting plate adopt an interference fit, and the fit tolerance is 1mm-2mm.

[0011] Preferably, a plurality of heaters are fixedly mounted on the outer surface of the second fixed tube, and the plurality of heaters are linearly distributed along the axial direction of the second fixed tube. A cooler is provided below the feed pipe corresponding to the heater.

[0012] Preferably, a plurality of filter holes are provided through the outer surface of the delivery pipe, and the plurality of filter holes are distributed circumferentially around the center line of the delivery pipe. A water outlet pipe is fixedly installed on the outer surface of the first fixed pipe corresponding to the delivery pipe, and the water outlet pipe is connected to the first fixed pipe.

[0013] Preferably, a vacuum chamber is formed between the second fixed tube and the material conveying tube.

[0014] Preferably, a preheater is provided on the outer surface of the first fixed tube.

[0015] Compared with the prior art, the advantages of the present invention are: the present invention is provided with a connecting groove and a connecting plate, the connecting groove is opened on the inner wall of the connecting pipe, the connecting plate is fixedly installed on the outer surface of the discharge pipe, and the discharge pipe is fixed to the inside of the connecting pipe through the connecting plate. When the staff replaces the discharge pipe of the equipment, they directly use tools to take out the discharge pipe and place the new discharge pipe after cooling in the connecting pipe, which greatly reduces the steps. When replacing multiple equipment, the time required is greatly reduced, thereby improving the replacement efficiency; the present invention is provided with a combination screw. Due to the changes in the screw groove depth and spiral of the feeding section and the compression section screw at the front end of the combination screw, the physical compression ratio of the material passing through can be increased, so that it has the function of material extrusion and dehydration, thereby enabling the equipment to better control the temperature and melting state of the raw materials, thereby improving the quality of the product and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged view of middle A;

[0020] Figure 5 for Figure 3 A partial enlarged view of B.

[0021] The numbers in the figure are: 1. Fixed table; 2. Connecting table; 3. Support plate; 4. Loading assembly; 5. Duplex screen changer; 6. Connecting pipe; 7. Connecting trough; 8. Discharge pipe; 9. Connecting plate; 10. Conveying pipe; 11. First fixed pipe; 12. Conveying pipe; 13. Second fixed pipe; 14. Combined screw; 15. Buffer bin; 16. Third fixed pipe; 17. Rotating shaft; 18. Threaded blades; 19. Barrel; 20. Heater; 21. Cooler; 22. Filter hole; 23. Water outlet pipe; 24. Preheater. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] Reference Figure 1-5 As shown, an energy-saving recycled plastic extruder includes a fixed table 1, a connecting table 2 is fixedly installed on the upper surface of the fixed table 1, a support plate 3 is fixedly installed on the upper surface of the connecting table 2, a feeding assembly 4 is fixedly installed on the upper surface of the support plate 3, a worker places the wetted material in the feeding assembly 4, and a double-station screen changer 5 is provided above the fixed table 1 on the side away from the feeding assembly 4. The double-station screen changer 5 is a device that has two filtering stations, one for working and the other as a backup. The design of this device allows for rapid screen changing during the production process without stopping the machine. A connecting pipe 6 is fixedly installed on the side away from the support plate 3 of the double-station screen changer 5. The connecting pipe 6 has a plurality of connecting grooves 7 arranged inside, and the plurality of connecting grooves 7 are distributed circumferentially around the center line of the connecting pipe 6. A discharge pipe 8 is provided inside the connecting pipe 6, and a connecting plate 9 corresponding to the connecting groove 7 is fixedly installed on the outer surface of the discharge pipe 8. The worker selects the corresponding discharge pipe 8 as needed and fixes the corresponding discharge pipe 8 through the connecting plate 9 and the connecting groove 7.

[0024] like Figure 4As shown, a conveying pipe 10 is fixedly installed on the side of the support plate 3 close to the duplex screen changer 5, and a first fixed pipe 11 is provided on the outer surface of the conveying pipe 10. The end of the conveying pipe 10 away from the duplex screen changer 5 is connected to the material conveying pipe 12, and a second fixed pipe 13 is provided on the outer surface of the conveying pipe 10. A support rod is fixedly installed between the second fixed pipe 13 and the fixed platform 1, and an insulation pipe is provided on the outer surface of the conveying pipe 10. The insulation pipe preheats the material in the conveying pipe 10. A combination screw 14 is rotatably installed inside the support plate 3 corresponding to the conveying pipe 10, and the combination screw 14 passes through the conveying pipe 10 and the material conveying pipe 12. A power source is provided on the side of the support plate 3 away from the conveying pipe 10, and the power source drives the combination screw 14 to rotate. The rotating combination screw 14 drives the material entering the conveying pipe 10 to move along the axial direction of the combination screw 14. The feeding section and the compression section of the screw at the front end of the combination screw 14 increase the physical compression ratio of the material passing through through the changes in the screw groove depth and the spiral, so that it has the function of material extrusion and dehydration.

[0025] like Figure 5 As shown, the feeding assembly 4 includes a buffer bin 15, and the side of the buffer bin 15 close to the conveying pipe 10 is connected to the third fixed pipe 16. The inner wall of the buffer bin 15 corresponding to the third fixed pipe 16 is rotatably installed with a rotating shaft 17, and the outer surface of the rotating shaft 17 is fixedly installed with a threaded blade 18. The end of the third fixed pipe 16 away from the storage tank is connected to the barrel 19, and the barrel 19 is connected to the conveying pipe 10. The staff places the material in the buffer bin 15, and the rotating shaft 17 drives the threaded blade 18 to transfer, so that the material in the buffer bin 15 enters the conveying pipe 10 through the barrel 19.

[0026] like Figure 1-5 As shown, the connecting groove 7 and the connecting plate 9 adopt an interference fit, and the fit tolerance is 1mm-2mm. The interference fit means that the size of the connecting plate 9 is slightly larger than the connecting groove 7. When they are assembled together, the connecting plate 9 will be subjected to a certain compression force, so that it fits tightly in the connecting groove 7. According to the principle of thermal expansion and contraction, when the equipment is in use, the connecting plate 9 and the connecting groove 7 fit more tightly.

[0027] like Figure 1-4As shown, a plurality of heaters 20 are fixedly installed on the outer surface of the second fixed tube 13, and the plurality of heaters 20 are linearly distributed along the axial direction of the second fixed tube 13. A cooler 21 is provided under the feed pipe 12 corresponding to the heater 20. The heater 20 and the cooler 21 cooperate with each other to control the temperature of the material in the feed pipe 12. The heating effect of the heater 20 can compensate for the heat loss of the molten material during the conveying process, thereby maintaining its temperature within an appropriate range, which is crucial to the stability of the extrusion process and the quality of the product. If the temperature of the molten material is too high during the conveying process, it may lead to a decline in product quality or damage to the equipment. The cooler 21 can timely reduce the material temperature in this case to prevent overheating.

[0028] like Figure 4 As shown, a plurality of filter holes 22 are formed through the outer surface of the delivery pipe 10, and the plurality of filter holes 22 are distributed circumferentially around the center line of the delivery pipe 10. A water outlet pipe 23 is fixedly installed on the outer surface of the first fixed pipe 11 corresponding to the delivery pipe 10. The water outlet pipe 23 is connected to the first fixed pipe 11. The material entering the delivery pipe 10 contains a large amount of water, and the water leaves the equipment through the filter holes 22 and the water outlet pipe 23 in turn.

[0029] like Figure 3-4 As shown, a vacuum chamber is formed between the second fixed tube 13 and the feed tube 12. The vacuum chamber has a certain thermal insulation effect, which can reduce the heat loss of the molten material during the conveying process. This helps to maintain the temperature of the material, ensure the continuity of the extrusion process and the consistency of product quality. By forming a vacuum environment, the vacuum chamber can reduce the possibility of external impurities and contaminants entering the molten material. This helps to maintain the purity of the material and improve the quality and reliability of the product.

[0030] like Figure 1-3 As shown, a preheater 24 is provided on the outer surface of the first fixed tube 11. The preheater 24 preheats the raw materials entering the delivery tube 10 so that the raw materials reach a certain temperature before entering the extruder. This helps to reduce the heating time of the molten material in the extruder and improve processing efficiency. The preheated raw materials are more easily melted and can be more evenly distributed during the extrusion process, which helps to improve the melting effect and reduce product quality problems caused by insufficient melting of the raw materials. Preheating the raw materials through the preheater 24 can reduce the heating load in the extruder, thereby reducing energy consumption, helping to reduce production costs, and improving the energy efficiency of the equipment.

[0031] Working principle: The staff installs the corresponding discharge pipe 8 in the connecting pipe 6 as needed, and the staff places the material in the buffer bin 15. The rotating shaft 17 drives the threaded blade 18 to transfer, so that the material in the buffer bin 15 passes through the barrel 19 into the conveying pipe 10. The power source drives the combined screw 14 to rotate, and the rotating combined screw 14 drives the material entering the conveying pipe 10 to move along the axial direction of the combined screw 14. When the material passes through the conveying pipe 10, the moisture in the material leaves the equipment through the filter hole 22 and the water outlet pipe 23 in turn. At the same time, the preheater 24 preheats the material. The preheated material continues to move with the combined screw 14. The heater 20 and the cooler 21 cooperate with each other to control the temperature of the material in the conveying pipe 12.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving recycled plastic extruder, comprising a fixed platform (1), a connecting platform (2) is fixedly installed on the upper surface of the fixed platform (1), a support plate (3) is fixedly installed on the upper surface of the connecting platform (2), a feeding assembly (4) is fixedly installed on the upper surface of the support plate (3), a double-station screen changer (5) is provided above the side of the fixed platform (1) away from the feeding assembly (4), a connecting pipe (6) is fixedly installed on the side of the double-station screen changer (5) away from the support plate (3), a plurality of connecting grooves (7) are opened inside the connecting pipe (6), and the plurality of connecting grooves (7) are distributed circumferentially around the center line of the connecting pipe (6), a discharge pipe (8) is provided inside the connecting pipe (6), and a connection plate (9) corresponding to the connecting groove (7) is fixedly installed on the outer surface of the discharge pipe (8).

2. An energy-saving recycled plastic extruder according to claim 1, characterized in that: A delivery pipe (10) is fixedly installed on one side of the support plate (3) close to the duplex screen changer (5); a first fixed pipe (11) is sleeved on the outer surface of the delivery pipe (10); an end of the delivery pipe (10) away from the duplex screen changer (5) is connected to a feed pipe (12); a second fixed pipe (13) is sleeved on the outer surface of the delivery pipe (10); an insulation pipe is sleeved on the outer surface of the delivery pipe (10); a combination screw (14) is rotatably installed inside the support plate (3) corresponding to the delivery pipe (10), and the combination screw (14) passes through the delivery pipe (10) and the feed pipe (12).

3. The energy-saving recycled plastic extruder according to claim 1, characterized in that: The feeding assembly (4) includes a buffer bin (15), a side of the buffer bin (15) close to the delivery pipe (10) is connected to a third fixed pipe (16), an inner wall of the buffer bin (15) corresponding to the third fixed pipe (16) is rotatably mounted with a rotating shaft (17), an outer surface of the rotating shaft (17) is fixedly mounted with a threaded blade (18), and an end of the third fixed pipe (16) away from the storage tank is connected to a barrel (19), and the barrel (19) is connected to the delivery pipe (10).

4. The energy-saving recycled plastic extruder according to claim 1, characterized in that: The connecting groove (7) and the connecting plate (9) are in interference fit, and the fit tolerance is 1mm-2mm.

5. The energy-saving recycled plastic extruder according to claim 4, characterized in that: A plurality of heaters (20) are fixedly mounted on the outer surface of the second fixed tube (13), and the plurality of heaters (20) are linearly distributed along the axial direction of the second fixed tube (13). A cooler (21) is provided below the feed pipe (12) corresponding to the heater (20).

6. The energy-saving recycled plastic extruder according to claim 2, characterized in that: The outer surface of the delivery pipe (10) is provided with a plurality of filter holes (22), and the plurality of filter holes (22) are distributed circumferentially around the center line of the delivery pipe (10). A water outlet pipe (23) is fixedly installed on the outer surface of the first fixed pipe (11) corresponding to the delivery pipe (10), and the water outlet pipe (23) is communicated with the first fixed pipe (11).

7. The energy-saving recycled plastic extruder according to claim 2, characterized in that: A vacuum chamber is formed between the second fixed tube (13) and the material conveying tube (12).

8. The energy-saving recycled plastic extruder according to claim 2, characterized in that: A preheater (24) is sleeved on the outer surface of the first fixed tube (11).

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