Continuous feeding device for waste plastic pyrolysis

Abstract

The utility model relates to the technical field of waste plastic pyrolysis, in particular to a waste plastic pyrolysis continuous feeding device which comprises a receiving hopper and a waste plastic and waste rubber pyrolysis continuous feeding device provided with the receiving hopper, and a screen is movably arranged in the receiving hopper. The waste plastic crushing device has the beneficial effects that the detachable screen is additionally arranged in the receiving hopper, the motor is arranged at the bottom end of the screen, and the motor drives the cutter to rotate at a high speed to cut and crush large waste plastics in the receiving hopper, so that the situation that the large waste plastics enter a screw feeder at the bottom end of the receiving hopper, and the screw feeder is clamped is avoided; after the waste plastics which are cut and crushed into small blocks are conveyed into the pyrolysis device, gaps among the waste plastics are smaller, and the heat transfer efficiency is higher, so that the pyrolysis efficiency is higher; in addition, after pyrolysis is completed, the screen can be taken out of the receiving hopper, the cutting knife can be detached from the transmission shaft of the motor, and the screen and the cutting knife can be cleaned conveniently.

Description

Technical Field

[0001] The utility model relates to the field of waste plastic pyrolysis, in particular to a waste plastic pyrolysis continuous feeding device. Background Art

[0002] Pyrolysis of waste plastics is a highly efficient chemical recycling technology. By breaking the plastic macromolecular chains under specific conditions, solid waste plastics are converted into liquid "pyrolysis oil", which is then processed into fuel or chemicals. In the process of pyrolysis of waste plastics, continuous feeding of the pyrolysis device is a very important step.

[0003] In the prior art, a patent document with application number CN201921929593.4 reviewed and published by the State Intellectual Property Office of China discloses a utility model patent entitled "Continuous Feeding Device for Pyrolysis of Waste Plastics and Waste Rubber", which includes a screw feeder, and a receiving hopper is provided on the feed port at the lower part of the screw feeder; the block raw material is loaded into the receiving hopper and transported to the pyrolysis gas by the screw feeder; it is characterized in that the angle between the central axis of the screw feeder and the horizontal plane is 0□90 degrees, and the feeder and the lower part are filled with a liquid for sealing; the liquid forms a sealing section in the feeder and the receiving hopper to isolate and seal the air on the receiving hopper side and the oil and gas in the pyrolysis gas.

[0004] However, the waste plastic and waste rubber pyrolysis continuous feeding device in the prior art lacks a crushing mechanism, resulting in the phenomenon that the bulk waste plastic is directly transferred to the pyrolysis device. The bulk waste plastic is large in size, which not only easily causes the screw feeder to be stuck, but also causes the waste plastic in the pyrolysis device to have a low density and low heat transfer efficiency after being fed into the pyrolysis device, thereby leading to the problem of low pyrolysis efficiency. Utility Model Content

[0005] The utility model aims to provide a waste plastic pyrolysis continuous feeding device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste plastic pyrolysis continuous feeding device, comprising: a receiving hopper and a waste plastic and waste rubber pyrolysis continuous feeding device equipped with the receiving hopper, a screen is movably arranged in the receiving hopper, a motor is arranged at the bottom end of the screen, a transmission shaft of the motor is rotatably connected to the surface of the screen and extends from the top of the screen, a cutting knife is sleeved on the shaft body of the part of the transmission shaft of the motor extending from the top of the screen, and a key connection is arranged between the transmission shaft of the motor and the cutting knife.

[0007] Preferably, a shaft sleeve is sleeved on the shaft body of the motor, a limit plate is mounted on the top of the motor by means of screws, and the bottom end of the limit plate abuts against the top of the cutting knife.

[0008] Preferably, a protection box is fixed to the bottom end of the screen, a motor is arranged in the protection box, and a battery is also arranged in the protection box.

[0009] Preferably, a plug-in groove is provided on the surface of the protective box, a plug-in rod is movably plugged into the plug-in groove, a protective cover is fixed to the bottom end of the plug-in rod, the protective cover is against the bottom end of the protective box, a sealing ring is provided at the bottom end of the protective box, and the other end of the sealing ring is against the surface of the protective cover.

[0010] Preferably, a limiting groove is provided on the inner wall of the plug-in groove, and a limiting block installation groove is provided on the surface of the plug-in rod at a position corresponding to the limiting groove, one end of the limiting block is movably inserted in the limiting block installation groove, and the other end of the limiting block is movably inserted in the limiting groove.

[0011] Preferably, a spring is fixed to one end of the limit block extending into the limit block installation groove, and the other end of the spring is fixed to the inner wall surface of the limit block installation groove.

[0012] Preferably, a push rod hole is opened on the surface of the protective box, the push rod hole is connected with the limiting groove, a push rod is movably inserted in the push rod hole, the push rod has an "I"-shaped rod body structure, one end of the push rod extends into the limiting groove, and the other end of the push rod extends from the push rod hole to the surface of the protective box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The waste plastic pyrolysis continuous feeding device proposed by the utility model has a detachable screen added to the receiving hopper, and a motor is arranged at the bottom end of the screen. The motor drives the cutting knife to rotate at a high speed to cut and crush the large pieces of waste plastic in the receiving hopper, thereby preventing the large pieces of waste plastic from entering the spiral feeder at the bottom end of the receiving hopper and causing the spiral feeder to be stuck. After the cut and crushed waste plastic in small pieces is transported into the pyrolysis device, the gaps between the waste plastics are smaller, the heat transfer efficiency is faster, and thus the pyrolysis efficiency is faster; in addition, after the pyrolysis is completed, the screen can be taken out of the receiving hopper, and the cutting knife can be removed from the drive shaft of the motor, so that the screen and the cutting knife can be cleaned conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the plug-in rod;

[0019] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0020] In the figure: receiving hopper 1, screen 2, motor 3, cutting knife 4, bushing 5, limit plate 6, protective box 7, battery 8, protective cover 9, sealing ring 10, plug-in slot 11, plug-in rod 12, limit block mounting slot 13, spring 14, limit block 15, limit slot 16, push rod 17, push rod hole 18. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: a waste plastic pyrolysis continuous feeding device, comprising: a receiving hopper 1 and a waste plastic and waste rubber pyrolysis continuous feeding device equipped with the receiving hopper 1, a screen 2 is movably arranged in the receiving hopper 1, a motor 3 is arranged at the bottom end of the screen 2, a transmission shaft of the motor 3 is rotatably connected to the surface of the screen 2 and extends from the top of the screen 2, a cutting knife 4 is sleeved on the shaft body of the part of the transmission shaft of the motor 3 extending from the top of the screen 2, and a key connection is arranged between the transmission shaft of the motor 3 and the cutting knife 4.

[0024] In actual use, the inner wall of the receiving hopper 1 is inclined and gradually converges downward. After the screen 2 is placed in the receiving hopper 1, it can be clamped at the middle height of the receiving hopper 1. Then, after the raw materials are poured into the receiving hopper 1, large pieces of waste plastic are blocked by the screen 2. The motor 3 is turned on to drive the cutting knife 4 to rotate at high speed to cut the large pieces of waste plastic. The large pieces of waste plastic are cut into fine particles before they can pass through the mesh of the screen 2 and then fall into the waste plastic and waste rubber pyrolysis continuous feeding device at the bottom of the receiving hopper 1. After that, they are transported into the pyrolysis device by the screw feeder. The waste plastic pyrolysis continuous feeding device is added into the receiving hopper 1. A detachable screen 2 is provided, and a motor 3 is arranged at the bottom end of the screen 2. The motor 3 drives the cutting knife 4 to rotate at a high speed to cut and crush the large pieces of waste plastic in the receiving hopper 1, thereby preventing the large pieces of waste plastic from entering the screw feeder at the bottom end of the receiving hopper 1 and causing the screw feeder to be stuck. After the cut and crushed waste plastic into small pieces is transported into the pyrolysis device, the gaps between the waste plastics are smaller, the heat transfer efficiency is faster, and thus the pyrolysis efficiency is faster; in addition, after the pyrolysis is completed, the screen 2 can also be taken out from the receiving hopper 1, and the cutting knife 4 can be removed from the transmission shaft of the motor 3, so that the screen 2 and the cutting knife 4 are convenient to clean.

[0025] Embodiment 2

[0026] On the basis of the first embodiment, in order to facilitate the disassembly and assembly of the cutting knife 4, a shaft sleeve 5 is sleeved on the shaft of the motor 3, and a limiting plate 6 is installed on the top of the motor 3 by screws, and the bottom end of the limiting plate 6 is against the top of the cutting knife 4.

[0027] When it is necessary to remove the cutting knife 4, it is only necessary to unscrew the screws of the installation limit plate 6 from the screw holes on the transmission shaft of the motor 3, so that the cutting knife 4 can be removed from the transmission shaft of the motor 3, and the shaft sleeve 5 can be removed and properly kept; when the cutting knife 4 is to be installed, it is only necessary to put the shaft sleeve 5 back on the motor 3 and then put the cutting knife 4 back on the motor 3, and then screw the screws of the limit plate 6 back into the screw holes on the transmission shaft of the motor 3 to complete the installation of the cutting knife 4. The existence of the shaft sleeve 5, on the one hand, leaves a gap between the cutting knife 4 and the screen 2 to prevent the cutting knife 4 from being hung on the screen 2 and damaged. At the same time, the shaft sleeve 5 and the limit plate 6 jointly perform axial positioning on the cutting knife 4 to prevent the cutting knife 4 from running up and down when rotating at high speed.

[0028] Embodiment 3

[0029] On the basis of the second embodiment, in order to provide protection for the motor 3 and facilitate the replacement of the battery 8, a protective box 7 is fixed to the bottom end of the screen 2, the motor 3 is arranged in the protective box 7, and the protective box 7 is also provided with a battery 8, a plug-in slot 11 is provided on the surface of the protective box 7, a plug-in rod 12 is movably plugged into the plug-in slot 11, a protective cover 9 is fixed to the bottom end of the plug-in rod 12, the protective cover 9 is abutted against the bottom end of the protective box 7, a sealing ring 10 is provided at the bottom end of the protective box 7, and the other end of the sealing ring 10 is abutted against the surface of the protective cover 9, a limiting groove 16 is provided on the inner wall of the plug-in slot 11, and a position on the surface of the plug-in rod 12 corresponding to the limiting groove 16 A limit block mounting groove 13 is provided on the top, one end of the limit block 15 is movably inserted in the limit block mounting groove 13, the other end of the limit block 15 is movably inserted in the limit groove 16, one end of the limit block 15 extending into the limit block mounting groove 13 is fixed with a spring 14, the other end of the spring 14 is fixed to the inner wall surface of the limit block mounting groove 13, a push rod hole 18 is provided on the surface of the protective box 7, the push rod hole 18 is connected with the limit groove 16, a push rod 17 is movably inserted in the push rod hole 18, the push rod 17 is an "I"-shaped rod body structure, one end of the push rod 17 extends into the limit groove 16, and the other end of the push rod 17 extends out of the push rod hole 18 from the surface of the protective box 7.

[0030] Water, oil and other liquids will be poured into the receiving hopper 1 for sealing, so the motor 3 needs to be waterproofed, the bottom end of the screen 2 is fixed with a protective box 7, the motor 3 and the battery 8 are arranged in the protective box 7, the bottom opening of the protective box 7 is closed with a protective cover 9, and the gap between the protective box 7 and the protective cover 9 is filled with a sealing ring 10 for further sealing, thereby providing a sealed working environment for the protective box 7 and the battery 8 to prevent damage to the protective box 7 by oil, water, etc.; when the battery 8 needs to be replaced, the screen 2 is taken out of the receiving hopper 1, and then only the push rod 17 is pressed in the direction close to the protective box 7, and the push rod 17 is retracted into the push rod hole 18, thereby the limit block 15 is removed from the limit groove 16 is pushed out, so that the limit between the plug-in slot 11 and the plug-in rod 12 can be released, so that the protective cover 9 can be removed from the bottom end of the protective box 7, the old battery 8 can be replaced with a new battery 8, and then the plug-in rod 12 is inserted back into the plug-in slot 11. When inserting it back, first press the limit block 15 completely into the limit block installation slot 13 to compress the spring 14. When the plug-in rod 12 is fully inserted into the plug-in slot 11, the limit block installation slot 13 is automatically aligned with the limit slot 16, and the spring 14 can push one end of the limit block 15 into the limit slot 16, so that the limit between the plug-in slot 11 and the plug-in rod 12 is restored, and then the protective cover 9 is installed back into the protective box 7, realizing the convenient replacement of the battery 8.

[0031] In actual use, the inner wall of the receiving hopper 1 is inclined and gradually closes downward. After the screen 2 is placed in the receiving hopper 1, it can be clamped at the middle height of the receiving hopper 1. Then, after the raw materials are poured into the receiving hopper 1, large pieces of waste plastic are blocked by the screen 2. The motor 3 is turned on to drive the cutting knife 4 to rotate at high speed to cut the large pieces of waste plastic. The large pieces of waste plastic are cut into fine particles before passing through the mesh of the screen 2. Then, the waste plastic and waste rubber pyrolysis continuous feeding device at the bottom of the receiving hopper 1 are transported into the pyrolysis device by the screw feeder. The waste plastic pyrolysis continuous feeding device is in the receiving hopper. A detachable screen 2 is added to the hopper 1, and a motor 3 is arranged at the bottom of the screen 2. The motor 3 drives the cutting knife 4 to rotate at a high speed to cut and crush the large pieces of waste plastic in the receiving hopper 1, thereby preventing the large pieces of waste plastic from entering the screw feeder at the bottom of the receiving hopper 1 and causing the screw feeder to get stuck. After the cut and crushed waste plastic into small pieces is transported to the pyrolysis device, the gaps between the waste plastics are smaller, the heat transfer efficiency is faster, and thus the pyrolysis efficiency is faster; in addition, after the pyrolysis is completed, the screen 2 can also be taken out of the receiving hopper 1, and the cutting knife 4 can be removed from the transmission shaft of the motor 3, which is convenient for The sieve 2 and the cutting knife 4 are cleaned; when the cutting knife 4 needs to be removed, the screws for installing the limiting plate 6 need only be unscrewed from the screw holes on the drive shaft of the motor 3, and the cutting knife 4 can be removed from the drive shaft of the motor 3, and the shaft sleeve 5 can be removed and properly kept; when the cutting knife 4 needs to be installed, the shaft sleeve 5 needs only be put back on the motor 3, and then the cutting knife 4 is also put back on the motor 3, and then the screws of the limiting plate 6 are screwed back into the screw holes on the drive shaft of the motor 3 to complete the installation of the cutting knife 4. The existence of the shaft sleeve 5 leaves a gap between the cutting knife 4 and the sieve 2, preventing the cutting knife 4 from being hung on the sieve 2 and being damaged. At the same time, the shaft sleeve 5 and the limit plate 6 jointly perform axial positioning on the cutting knife 4 to prevent the cutting knife 4 from running up and down when rotating at high speed; water, oil and other liquids will be poured into the receiving hopper 1 for sealing, so the motor 3 must be waterproofed, the bottom end of the screen 2 is fixed with a protective box 7, the motor 3 and the battery 8 are arranged in the protective box 7, the bottom opening of the protective box 7 is closed by a protective cover 9, and the gap between the protective box 7 and the protective cover 9 is filled with a sealing ring 10 for further sealing, thereby providing a sealed working environment for the protective box 7 and the battery 8 to prevent oil, water, etc. from damaging the protective box 7;When the battery 8 needs to be replaced, the screen 2 is taken out of the receiving hopper 1, and then the push rod 17 is pressed in the direction close to the protective box 7, and the push rod 17 is retracted into the push rod hole 18 to push the limit block 15 out of the limit groove 16, so that the limit between the plug slot 11 and the plug rod 12 can be released, so that the protective cover 9 can be removed from the bottom end of the protective box 7, and the old battery 8 is replaced with a new battery 8, and then the plug rod 12 is inserted back into the plug slot 11. When inserting it back, first press the limit block 15 completely into the limit block installation groove 13 to compress the spring 14. When the plug rod 12 is fully inserted into the plug slot 11, the limit block installation groove 13 is automatically aligned with the limit groove 16, and the spring 14 can push one end of the limit block 15 into the limit groove 16, so that the limit between the plug slot 11 and the plug rod 12 is restored, and then the protective cover 9 is installed back into the protective box 7, realizing the convenient replacement of the battery 8. ;

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste plastic pyrolysis continuous feeding device, comprising: A receiving hopper (1) and a waste plastic and waste rubber pyrolysis continuous feeding device equipped with the receiving hopper (1), characterized in that a screen (2) is movably arranged in the receiving hopper (1), a motor (3) is arranged at the bottom end of the screen (2), a transmission shaft of the motor (3) is rotatably connected to the surface of the screen (2) and extends from the top end of the screen (2), a cutting knife (4) is sleeved on the shaft body of the part of the transmission shaft of the motor (3) extending from the top end of the screen (2), and a key connection is arranged between the transmission shaft of the motor (3) and the cutting knife (4).

2. A waste plastic pyrolysis continuous feeding device according to claim 1, characterized in that: A shaft sleeve (5) is sleeved on the shaft body of the motor (3), a limit plate (6) is mounted on the top end of the motor (3) via screws, and the bottom end of the limit plate (6) abuts against the top end of the cutting knife (4).

3. A waste plastic pyrolysis continuous feeding device according to claim 1, characterized in that: A protection box (7) is fixed to the bottom end of the screen (2), the motor (3) is arranged in the protection box (7), and a battery (8) is also arranged in the protection box (7).

4. A waste plastic pyrolysis continuous feeding device according to claim 3, characterized in that: The surface of the protection box (7) is provided with a plug-in groove (11), a plug-in rod (12) is movably plugged into the plug-in groove (11), a protection cover (9) is fixed to the bottom end of the plug-in rod (12), the protection cover (9) abuts against the bottom end of the protection box (7), a sealing ring (10) is provided at the bottom end of the protection box (7), and the other end of the sealing ring (10) abuts against the surface of the protection cover (9).

5. A waste plastic pyrolysis continuous feeding device according to claim 4, characterized in that: A limiting groove (16) is provided on the inner wall of the plug-in groove (11), and a limiting block installation groove (13) is provided on the surface of the plug-in rod (12) at a position corresponding to the limiting groove (16); one end of the limiting block (15) is movably inserted in the limiting block installation groove (13), and the other end of the limiting block (15) is movably inserted in the limiting groove (16).

6. A waste plastic pyrolysis continuous feeding device according to claim 5, characterized in that: A spring (14) is fixed to one end of the limit block (15) extending into the limit block installation groove (13), and the other end of the spring (14) is fixed to the inner wall surface of the limit block installation groove (13).

7. A waste plastic pyrolysis continuous feeding device according to claim 5, characterized in that: A push rod hole (18) is provided on the surface of the protection box (7), the push rod hole (18) is connected to the limiting groove (16), a push rod (17) is movably inserted in the push rod hole (18), the push rod (17) is in an "I"-shaped rod body structure, one end of the push rod (17) extends into the limiting groove (16), and the other end of the push rod (17) extends out of the push rod hole (18) and out of the surface of the protection box (7).

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