High-pressure melting and washing device for waste plastics

Abstract

According to the high-pressure melt washing device for the waste plastics, a main tank and an auxiliary tank are combined to wash and separate the waste plastics, a steam assembly is arranged on the upper portion of the main tank, high-temperature and high-pressure steam is conveyed to a steam spray head through a steam main pipeline, and an inner cabin in the main tank is heated; and the temperature can be gradually increased according to the types of the waste plastics, so that the waste plastics at different melting points can be melted, and the purpose of classified collection is achieved. Besides, the driving motor drives the inner cabin to rotate in the main tank, the inner cabin is of a net-shaped porous structure under the action of the prefabricated through holes, high-temperature steam can make contact with the waste plastic through the prefabricated through holes, it is ensured that the high-temperature steam evenly acts on the surface of the waste plastic, and the cleaning and separating effects are improved.

Description

Technical Field

[0001] The present application relates to the technical field of waste plastic processing, and in particular to a high-pressure melting and washing device for waste plastic. Background Art

[0002] Plastics are synthetic resin products mainly composed of polyethylene, polypropylene, polystyrene and other materials, while waste plastics refer to plastic products produced in daily life and production activities that have lost their original use value and have been discarded. If these waste plastics are not properly handled, they will cause serious pollution to the environment. In order to reduce the negative impact of waste plastics on the environment, it is usually necessary to sort, clean, and crush waste plastics to convert waste plastics into raw materials or products to achieve resource recycling.

[0003] In the process of handling waste plastics, the first step is to carry out fine sorting to ensure that different types of plastics are strictly distinguished. Subsequently, the dirt and impurities attached to the surface of the plastics are removed by efficient cleaning devices, and the cleaned waste and the washed plastics are collected separately to ensure the high purity of the plastic raw materials. Finally, professional crushing machinery is used to process the waste plastics into small pieces or granules for further processing and utilization.

[0004] With the growing demand for recycling and reuse of waste plastics, existing waste plastic cleaning devices usually use large amounts of water and chemical cleaning agents to clean waste plastics; most traditional equipment uses a single-layer separation and cleaning design, which is not easy to fully clean the waste plastics and also has low separation efficiency. Summary of the invention

[0005] To this end, the present application provides a high-pressure melting and washing device for waste plastics to solve the problems of insufficient cleaning and low separation efficiency of existing single-layer separation and washing devices for waste plastics.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A high-pressure melting and washing device for waste plastics, the device comprising: a main tank and a sub-tank, the lower part of the main tank is connected with the upper part of the sub-tank and is provided with a discharge valve;

[0008] A steam assembly is arranged on the upper part of the main tank, and the steam assembly includes: a steam main pipeline and a steam nozzle. The steam main pipeline is arranged directly above the main tank, and the steam nozzle is located in the main tank and connected to the steam main pipeline;

[0009] A rotating assembly is installed inside the main tank, and the rotating assembly includes a driving motor and an inner cabin. A driving motor is arranged on the outer side of the left end of the main tank, and the output end of the driving motor is connected to the left end of the inner cabin. A plurality of prefabricated through holes are opened through the inner wall of the inner cabin.

[0010] Furthermore, an arc-shaped scraper is installed on the outer wall surface of the inner chamber, and one end of the arc-shaped scraper away from the inner chamber is in contact with the inner wall of the main tank.

[0011] Furthermore, a discharging assembly is installed inside the auxiliary tank, and the discharging assembly includes: a chain machine and a motor. The chain machine is installed at the lower part of the inner side of the auxiliary tank, and the chain machine is connected to the output end of the motor. A baffle plate is fixedly installed in the middle part of the inner side of the auxiliary tank. The baffle plate is inclined and symmetrically arranged relative to the vertical center axis of the chain machine.

[0012] Furthermore, a stirring rod is fixedly installed in the middle of the inner side of the inner chamber, one end of the stirring rod close to the driving motor is connected to the output end of the driving motor through a coupling, and a stirring blade is fixedly installed on the outer side of the stirring rod.

[0013] Furthermore, a control valve is provided at one end of the steam main pipeline close to the main tank.

[0014] Furthermore, a first tank door is installed on the outer side of the right end of the main tank through a hinge, and a second tank door is installed on the outer side of the right end of the auxiliary tank through a hinge, and docking grooves are respectively formed at the edges of the first tank door and the second tank door, and the docking grooves are covered with sealing rings, and the right ends of the main tank and the auxiliary tank extend to the interior of the docking grooves and contact the sealing rings, and airbags are arranged inside the first tank door and the second tank door, and the airbags have a retractable corrugated part, and an inflation tube is externally connected to the outside of one end of the airbag, and the outer end of the inflation tube extends to the outer ends of the first tank door and the second tank door.

[0015] Furthermore, a rubber seal is fixedly installed on the other end of the airbag, a reinforcement block is fixedly installed on the end of the rubber seal away from the airbag, and the reinforcement block is connected to the main tank in a plug-in manner.

[0016] Furthermore, a support frame is fixedly installed on the outer side of the lower part of the auxiliary tank, and the upper end of the support frame extends to the outer side of the lower part of the main tank.

[0017] Furthermore, cleaning pipes are installed on both left and right sides of the upper inner portion of the auxiliary tank, and cleaning nozzles are arranged downwardly in the cleaning pipes.

[0018] Furthermore, an elastic baffle is installed on the inner wall of the main tank, and a supporting roller is installed inside the elastic baffle.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] The embodiment of the present application uses a combination of a main tank and a sub-tank to clean and separate waste plastics. A steam assembly is provided on the upper part of the main tank, and high-temperature and high-pressure steam is delivered to the steam nozzle through the steam main pipeline to heat the inner chamber of the main tank, so as to facilitate the gradual increase of the temperature according to the type of waste plastics, so as to melt out waste plastics with different melting points and achieve the purpose of classified collection. In addition, the inner chamber is driven by a driving motor to rotate in the main tank, and the inner chamber presents a mesh porous structure under the action of the prefabricated through holes, which can make the high-temperature steam contact with the waste plastics through the prefabricated through holes, ensuring that the high-temperature steam acts evenly on the surface of the waste plastics, and improving the cleaning and separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units based on the technical concepts and exemplary drawings disclosed in the present application.

[0022] Figure 1 A schematic diagram of a front cross-sectional structure of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application;

[0023] Figure 2 A schematic diagram of a side cross-sectional structure of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application;

[0024] Figure 3 A schematic front view of the structure of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application, showing the connection between the inner chamber and the arc-shaped scraper;

[0025] Figure 4 A schematic side view of the structure of the connection between an air bag and a rubber seal of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application;

[0026] Figure 5 A schematic diagram of the side view of the structure of the connection between the inner chamber and the arc-shaped scraper of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application;

[0027] Figure 6 A high-pressure melting and washing device for waste plastics provided in one embodiment of the present application Figure 1 The enlarged structural diagram at A in the middle;

[0028] Figure 7 A high-pressure melting and washing device for waste plastics provided in one embodiment of the present application Figure 1 The enlarged structural diagram at B in the middle;

[0029] Figure 8 A high-pressure melting and washing device for waste plastics provided in one embodiment of the present application Figure 1 Enlarged structural diagram at point C in the middle.

[0030] Fig. 9 A schematic side cross-sectional structure diagram of the connection between an elastic baffle and a support roller of a high-pressure melting and washing device for waste plastics provided in one embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1. Main tank; 2. First tank door; 3. Driving motor; 4. Inner cabin; 5. Stirring rod; 6. Stirring blade; 7. Jet hole; 8. Inlet pipe; 9. Sealing ring; 10. Prefabricated through hole; 11. Unloading valve; 12. Steam main pipeline; 13. Control valve; 14. Steam nozzle; 15. Elastic baffle; 16. Support roller; 17. Auxiliary tank; 18. Second tank door; 19. Chain conveyor; 20. Baffle plate; 21. Cleaning pipeline; 22. Cleaning nozzle; 23. Support frame; 24. Sealing ring; 25. Air bag; 26. Inflating tube; 27. Rubber seal; 28. Reinforcement block; 29. ​​Arc scraper; 30. Damper telescopic part; 31. Connecting block; 32. Extension tube; 33. Auxiliary spring. DETAILED DESCRIPTION

[0033] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0034] like Figures 1 to 9 As shown, the embodiment of the present application discloses a high-pressure melting and washing device for waste plastics, which includes: a main tank 1 and a sub-tank 17. The lower part of the main tank 1 is connected to the sub-tank 17 and is provided with a discharge valve 11. The main tank 1 is located above the sub-tank 17. A support frame 23 is fixedly installed on the outer side of the lower part of the sub-tank 17, and the upper end of the support frame 23 extends to the outer side of the lower part of the main tank 1. The support frame 23 plays a good installation and support role for the main tank 1 and the sub-tank 17 respectively, and the main tank 1 is fixedly installed on the sub-tank 17 to reduce the floor space.

[0035] A steam component is arranged on the upper part of the main tank 1 , and the steam component includes: a steam main pipe 12 and a steam nozzle 14 . The steam main pipe 12 is arranged directly above the main tank 1 , and the steam nozzle 14 is located in the main tank 1 and connected to the steam main pipe 12 .

[0036] The steam assembly also includes: a control valve 13, and a control valve 13 is provided at one end of the steam main pipe 12 near the main tank 1. The steam main pipe 12 is connected to a steam nozzle 14 located in the main tank 1 through the control valve 13. The steam nozzle 14 is evenly distributed on the outside of the main tank 1. The steam main pipe 12 is connected to the external steam pipe. The control valve 13 plays a good installation role for the steam nozzle 14. The steam nozzle 14 sprays steam into the main tank 1 evenly through the steam nozzle 14 in a pressure range of 0.1MPa to 10MPa and a temperature range of 100℃ to 310℃, which is convenient for gradually increasing the temperature according to the type of waste plastics, so as to melt out waste plastics with different melting points and achieve the purpose of classified collection. At the same time, the inner cabin 4 is a mesh porous structure under the action of the prefabricated through hole 10, which can make the high-temperature steam contact with the waste plastic through the prefabricated through hole 10, ensure that the high-temperature steam acts evenly on the surface of the waste plastic, improve the cleaning effect, and thus effectively remove pollutants and impurities on the surface of the plastic.

[0037] At the same time, a heat recovery pipeline is arranged at the lower side of the rear end of the main tank 1, which is convenient for connecting to an external heat recovery device to achieve the purpose of waste heat recovery.

[0038] A first tank door 2 is installed on the outer side of the right end of the main tank 1 through a hinge, and a second tank door 18 is installed on the outer side of the right end of the auxiliary tank 17 through a hinge.

[0039] A rotating assembly is installed inside the main tank 1, and the rotating assembly includes: a driving motor 3 and an inner cabin 4. The driving motor 3 is arranged on the outer side of the left end of the main tank 1, and the output end of the driving motor 3 is connected to the left end of the inner cabin 4. A plurality of groups of prefabricated through holes 10 are opened through the inner wall of the inner cabin 4, and the right end of the inner cabin 4 is open, so as to facilitate the placement of waste plastics through the inner cabin 4.

[0040] The embodiment of the present application uses a combination of a main tank and a sub-tank to clean and separate waste plastics. A steam assembly is provided on the upper part of the main tank, and high-temperature and high-pressure steam is delivered to the steam nozzle through the steam main pipeline to heat the inner chamber of the main tank, so as to facilitate the gradual increase of the temperature according to the type of waste plastics, so as to melt out waste plastics with different melting points and achieve the purpose of classified collection. In addition, the inner chamber is driven by a driving motor to rotate in the main tank, and the inner chamber presents a mesh porous structure under the action of the prefabricated through holes, which can make the high-temperature steam contact with the waste plastics through the prefabricated through holes, ensuring that the high-temperature steam acts evenly on the surface of the waste plastics, and improving the cleaning and separation effect.

[0041] Most traditional cleaning devices have limitations in separating and discharging impurities after cleaning, resulting in a large amount of washed impurities being inevitably adsorbed on the inner wall of the main tank and other plastic surfaces, affecting the overall cleaning effect.

[0042] Preferably, the rotating assembly further comprises: an arc scraper 29, the outer wall surface of the inner chamber 4 is provided with the arc scraper 29, and one end of the arc scraper 29 away from the inner chamber 4 contacts the inner wall of the main tank 1. The arc scraper 29 can be tilted on the outer wall surface of the inner chamber 4, and the tilt angles of the arc scrapers 29 are equal.

[0043] A stirring rod 5 is installed in the middle of the inner side of the inner chamber 4. The end of the stirring rod 5 close to the driving motor 3 is connected to the output end of the driving motor 3 through a coupling, and a stirring blade 6 is fixedly installed on the outer side of the stirring rod 5. The stirring blade 6 is evenly distributed on the stirring rod 5.

[0044] When cleaning the waste plastics, open the first tank door 2, send the waste plastics into the inner chamber 4 through an external conveying device, close the first tank door 2, start the drive motor 3, and drive the inner chamber 4 and the stirring rod 5 to rotate inside the first tank door 2 through the coupling. The inner chamber 4 can rotate 360°, which is convenient for driving the waste plastics to roll up and down and evenly flip over inside the inner chamber 4, ensuring that the materials can be fully exposed to steam cleaning.

[0045] An elastic baffle 15 is installed on the inner wall of the main tank 1, and a support roller 16 is installed inside the elastic baffle 15. The support roller 16 is connected to the outer wall of the inner chamber 4. The support roller 16 plays a good supporting role on the inner chamber 4 and improves the stability of its rotation. At the same time, the elastic baffle 15 can block impurities and prevent impurities from entering the gap at the connection between the support roller 16 and the main tank 1, thereby ensuring the overall smooth operation and cleanliness.

[0046] The stirring rod 5 and the stirring blade 6 are both hollow, and an air jet hole 7 is opened through the right wall of the stirring blade 6. An air intake pipe 8 connected to the stirring rod 5 is opened through the middle of the inner side of the first tank door 2, and a sealing ring 9 in contact with the stirring rod 5 is arranged on the outer side of the left end of the air intake pipe 8. When the first tank door 2 is closed, the inner end of the air intake pipe 8 can be inserted into the end of the stirring rod 5 close to the first tank door 2. At this time, the sealing ring 9 can ensure the sealing effect of the connection between the air intake pipe 8 and the sealing ring 9 without affecting the rotation of the stirring rod 5. The outer end of the air intake pipe 8 is connected to the external steam pipe, so that high-temperature steam can be injected into the stirring rod 5 and the stirring blade 6, and evenly sprayed out through the air jet hole 7 while rotating, thereby ensuring that the waste plastic is heated in all directions during the cleaning process, and under the action of the steam nozzle 14, the overall stirring and cleaning are carried out simultaneously, thereby improving the cleaning efficiency.

[0047] A discharging assembly is installed inside the auxiliary tank 17, and the discharging assembly includes a chain conveyor 19 and a motor. The chain conveyor 19 is installed at the lower part of the inner side of the auxiliary tank 17, and the chain conveyor 19 is connected to the output end of the motor. A baffle plate 20 is fixedly installed in the middle part of the inner side of the auxiliary tank 17.

[0048] A chain conveyor is installed on the lower part of the inner side of the auxiliary tank. After flushing is completed, the safety valve is started and the second tank door is opened to make the chain conveyor move under the action of the motor, so as to facilitate the discharge of impurities from the auxiliary tank after flushing. It is used for the efficient discharge of impurities and washed substances, improves the overall performance and cleaning effect of the equipment, improves the degree of automation of impurity discharge, and saves manpower and time.

[0049] An arc scraper 29 is installed on the outer wall of the inner chamber 4, and the end of the arc scraper 29 away from the inner chamber 4 is in contact with the inner wall of the main tank 1. When the inner chamber 4 rotates, the arc scraper 29 rotates synchronously with it. At this time, the arc scraper 29 is in contact with the inner wall of the main tank 1, so as to facilitate the scraping of impurities falling out through the prefabricated through hole 10 during the cleaning process to prevent accumulation.

[0050] In the embodiment of the present application, the arc scraper is driven to rotate synchronously with the inner cabin by rotating. At this time, the arc scraper contacts the inner wall of the main tank, thereby facilitating the scraping of impurities that fall out through the prefabricated through holes during the cleaning process to prevent accumulation and facilitate the impurities to fall onto the chain conveyor through the discharge valve.

[0051] After cleaning is completed, start the unloading valve 11, so that the main tank 1 and the auxiliary tank 17 are connected under the action of the unloading valve 11. At this time, the impurities adhering to the inner wall of the main tank 1 are pushed to the bottom of the main tank 1 under the action of the arc scraper 29, and fall into the interior of the auxiliary tank 17 through the unloading valve 11, and fall on the outer side of the upper end of the chain conveyor 19. The baffle plate 20 is inclined, and the baffle plate 20 is symmetrically arranged relative to the vertical center axis of the chain conveyor 19. The baffle plate 20 has a good guiding effect on the fallen impurities, which makes it convenient for the impurities to fall onto the chain conveyor 19 more accurately.

[0052] The inner side of the arc scraper 29 is provided with a convex block extending to the inner side of the inner chamber 4, and a damper telescopic member 30 is installed inside the outer wall of the inner chamber 4. A connecting block 31 is fixedly installed outside the end of the damper telescopic member 30 close to the arc scraper 29, and an auxiliary spring 33 is installed in the gap between the convex block and the inner chamber 4. When the arc scraper 29 performs impurity scraping work on the inner wall of the main tank 1, the arc scraper 29 is expanded and contracted in the inner chamber 4 under the extrusion force of the impurities, and moves toward the direction close to the central axis of the inner chamber 4. Move, at this time, one end of the arc scraper 29 that is inclined is in contact with the inclined surface of the connecting block 31, and squeezes the connecting block 31 when moving. At this time, the damper telescopic member 30 and the auxiliary spring 33 are compressed and deformed, so that the damper telescopic member 30 and the auxiliary spring 33 respectively exert a force on the connecting block 31 and the arc scraper 29 to restore to their original positions. This structure enables the arc scraper 29 to effectively remove impurities and can adapt to impurity layers of different thicknesses to ensure the cleaning effect.

[0053] A limiting step is formed at the opening of the inner chamber 4 that receives the protrusion, and the limiting step is used to limit the protrusion from detaching from the inner chamber 4 and to limit the outer end position of the arc scraper 29 to remain within the maximum external position. In addition, a rectangular block is integrated on the outer side of the connecting block 31, and a limiting groove is opened at a position corresponding to the rectangular block in the inner chamber 4. The limiting groove is used to limit the moving position of the rectangular block so that the connecting block 31 and the arc scraper 29 can move smoothly. At the same time, the moving position of the arc scraper 29 can be limited, so that the arc scraper 29 can always be in contact with the inner wall of the main tank 1 when in the original position without causing excessive damage to it.

[0054] An extension tube 32 connected to the discharge valve 11 is fixedly installed at the lower end of the main tank 1, and the outer end of the arc scraper 29 is in contact with the extension tube 32. The extension tube 32 has a good auxiliary effect on the discharge valve 11, preventing the arc scraper 29 from accidentally carrying away or dispersing impurities near the discharge valve 11 during the rotating scraping process, thereby affecting the discharge effect. At the same time, a through-hole structure is opened at equal angles inside the side wall of the extension tube 32 to facilitate and better discharge of impurities.

[0055] The arc scraper 29 is distributed in an equiangular circle on the outside of the inner chamber 4, and the arc scraper 29 is spirally arranged at the outer end of the inner chamber 4. During the rotation, the arc scraper 29 can not only efficiently scrape off impurities, but also guide and transport the impurities in an orderly manner through its spiral shape, ensuring that the impurities can move smoothly from the inside of the inner chamber 4 to the outside, greatly improving the efficiency and probability of discharging through the extension cylinder 32 and the discharge valve 11, while reducing the accumulation and blockage of impurities during the scraping process.

[0056] Cleaning pipes 21 are installed on both sides of the upper left and right parts of the auxiliary tank 17, and cleaning nozzles 22 are arranged downwardly in the cleaning pipes 21. Pressure gauges and safety valves are arranged on the outer sides of the upper ends of the main tank 1 and the auxiliary tank 17. The cleaning pipe 21 is connected to an external heating device. The valve on the outer side of the cleaning pipe 21 is started to allow water to spray out through the cleaning nozzle 22 and flush the impurities on the chain conveyor 19. After flushing, the safety valve is started and the second tank door 18 is opened to allow the chain conveyor 19 to move under the action of the motor, so as to facilitate the discharge of the flushed impurities from the auxiliary tank 17, thereby improving the degree of automation of impurity discharge and saving manpower and time. At the same time, a slag discharge pipe is arranged at the lower left end of the auxiliary tank 17, so that the dirt adhering to the bottom wall of the auxiliary tank 17 can be regularly flushed and discharged through the slag discharge pipe.

[0057] Docking grooves are formed at the edges of the first tank door 2 and the second tank door 18, respectively, and the docking grooves are covered with sealing rings 24, and the right ends of the main tank 1 and the auxiliary tank 17 extend to the inside of the docking groove and contact the sealing ring 24, and the inside of the first tank door 2 and the second tank door 18 are both provided with air bags 25, the air bags 25 have a retractable corrugated portion, and the outer side of one end of the air bag 25 is externally connected to an inflation tube 26, and the outer end of the inflation tube 26 extends to the outer end of the first tank door 2, and the other end of the air bag 25 is fixedly installed with a rubber seal 27, and the end of the rubber seal 27 away from the air bag is fixedly installed with a reinforcement block 28, and the reinforcement block 28 is connected to the main tank 1 in a plug-in manner, and the inner end of the sealing ring 24 is penetrated by a groove structure adapted to the rubber seal 27.

[0058] The inflation tube 26 is connected to the inflation pump. When the first tank door 2 is closed, the inflation pump is started to inflate air into the airbag 25 through the inflation tube 26. At this time, the airbag 25 drives the rubber seal 27 to move in the direction close to the sealing ring 24, so that the rubber seal 27 can be inserted into the groove structure opened on the inner wall of the sealing ring 24 and match the sealing ring 24. At this time, the rubber seal 27 can compensate for the gap at the connection between the main tank 1 and the first tank door 2. At the same time, the reinforcement block 28 is inserted into the main tank 1 to improve the firmness and tightness of the closing of the first tank door 2, and avoid the problem that the gap at the connection between the first tank door 2 and the main tank 1 becomes larger due to excessive pressure in the main tank 1, thereby affecting the sealing.

[0059] Similarly, the inflation tube 26 is connected to the inflation pump. When the second tank door 18 is closed, the inflation pump is started to inflate the air into the airbag 25 through the inflation tube 26. At this time, the airbag 25 drives the rubber seal 27 to move in the direction close to the sealing ring 24, so that the rubber seal 27 can be inserted into the groove structure opened on the inner wall of the sealing ring 24 and match the sealing ring 24. At this time, the rubber seal 27 can compensate for the gap at the connection between the auxiliary tank 17 and the second tank door 18. At the same time, the reinforcement block 28 is inserted into the auxiliary tank 17 to improve the firmness and tightness of the closing of the second tank door 18, and avoid the problem that the gap at the connection between the second tank door 18 and the auxiliary tank 17 becomes larger due to excessive pressure in the auxiliary tank 17, thereby affecting the sealing.

[0060] In the embodiment of the present application, the rubber seal can be inserted into the groove structure opened on the inner wall of the sealing ring and match the sealing ring to compensate for the gap between the main tank and the first tank door and the connection between the auxiliary tank and the second tank door. At the same time, the reinforcement block is inserted into the main tank and the auxiliary tank to improve the firmness and tightness of the closure of the first tank door and the second tank door, avoiding the problem of excessive pressure in the main tank causing the gap between the first tank door and the main tank and the connection between the auxiliary tank and the second tank door to become larger, thereby affecting the sealing.

[0061] The technical features of the above embodiments can be combined arbitrarily as long as there is no contradiction in the combination of these technical features. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A high-pressure melting and washing device for waste plastics, characterized in that: The device comprises: a main tank (1) and a subsidiary tank (17), wherein the lower part of the main tank (1) is connected to the upper part of the subsidiary tank (17) and is provided with a discharge valve (11); A steam component is arranged on the upper part of the main tank (1), and the steam component comprises: a steam main pipeline (12) and a steam nozzle (14); the steam main pipeline (12) is arranged directly above the main tank (1); the steam nozzle (14) is located in the main tank (1) and is connected to the steam main pipeline (12); A rotating assembly is installed inside the main tank (1), and the rotating assembly includes a driving motor (3) and an inner chamber (4). The driving motor (3) is arranged on the outer side of the left end of the main tank (1), and the output end of the driving motor (3) is connected to the left end of the inner chamber (4). The inner wall of the inner chamber (4) is penetrated by a plurality of groups of prefabricated through holes (10).

2. A high-pressure melting and washing device for waste plastics according to claim 1, characterized in that: An arc-shaped scraper (29) is installed on the outer wall surface of the inner chamber (4), and one end of the arc-shaped scraper (29) away from the inner chamber (4) contacts the inner wall of the main tank (1).

3. A high-pressure melting and washing device for waste plastics according to claim 2, characterized in that: A discharging assembly is installed inside the auxiliary tank (17), and the discharging assembly comprises: a chain plate machine (19) and a motor. The chain plate machine (19) is installed at the lower part of the inner side of the auxiliary tank (17), and the chain plate machine (19) is connected to the output end of the motor. A baffle plate (20) is fixedly installed in the middle part of the inner side of the auxiliary tank (17). The baffle plate (20) is arranged in an inclined manner, and the baffle plate (20) is symmetrically arranged relative to the vertical center axis of the chain plate machine (19).

4. A high-pressure melting and washing device for waste plastics according to claim 3, characterized in that: A stirring rod (5) is fixedly mounted in the middle of the inner side of the inner chamber (4); one end of the stirring rod (5) close to the driving motor (3) is connected to the output end of the driving motor (3) via a coupling, and a stirring blade (6) is fixedly mounted on the outer side of the stirring rod (5).

5. A high-pressure melting and washing device for waste plastics according to claim 4, characterized in that: A control valve (13) is provided at one end of the steam main pipeline (12) close to the main tank (1).

6. A high-pressure melting and washing device for waste plastics according to claim 5, characterized in that: A first tank door (2) is installed on the outer side of the right end of the main tank (1) through a hinge, and a second tank door (18) is installed on the outer side of the right end of the auxiliary tank (1) through a hinge. The edges of the first tank door (2) and the second tank door (18) respectively form docking grooves, which are covered with sealing rings (24). The right ends of the main tank (1) and the auxiliary tank (17) extend to the inside of the docking grooves and contact the sealing rings (24). The inside of the first tank door (2) and the second tank door (18) are both provided with air bags (25), which have a retractable corrugated portion. An air filling tube (26) is externally connected to the outside of one end of the air bag (25), and the outer end of the air filling tube (26) extends to the outer ends of the first tank door (2) and the second tank door (18).

7. A high-pressure melting and washing device for waste plastics according to claim 6, characterized in that: A rubber seal (27) is fixedly mounted on the other end of the airbag (25), a reinforcement block (28) is fixedly mounted on the end of the rubber seal (27) away from the airbag, and the reinforcement block (28) is connected to the main tank (1) in a plug-in manner.

8. A high-pressure melting and washing device for waste plastics according to claim 7, characterized in that: A support frame (23) is fixedly mounted on the outer side of the lower part of the auxiliary tank (17), and the upper end of the support frame (23) extends to the outer side of the lower part of the main tank (1).

9. A high-pressure melting and washing device for waste plastics according to claim 8, characterized in that: Cleaning pipes (21) are installed on both left and right sides of the upper inner part of the auxiliary tank (17), and cleaning nozzles (22) are arranged downwardly on the cleaning pipes (21).

10. A high-pressure melting and washing device for waste plastics according to claim 9, characterized in that: An elastic baffle (15) is installed on the inner wall of the main tank (1), and a supporting roller (16) is installed inside the elastic baffle (15).

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