PVC waste pretreatment device and PVC waste crushing method

Abstract

The present application provides a PVC waste pretreatment device and a PVC waste crushing method, which belongs to the field of PVC pipe recycling, and includes a water storage part, a door frame, a plurality of storage baskets, a quick cooling component and a discharge component; the water storage part adopts a structure with a hollow interior and an upward opening; the door frame part is located above the water storage part; the door frame has a protrusion extending downward into the water storage part and located below the liquid surface, and a conveyor belt arranged around the water storage part; the conveyor belt transmission is connected with a driving member; a plurality of storage baskets are rotatably connected to the conveyor belt; the quick cooling component is located on the outside of the conveyor belt; the discharge component is arranged between the quick cooling component and the conveyor belt, and is used to connect with the storage basket when the storage basket moves to the top of the feed port. The PVC waste pretreatment device and the PVC waste crushing method provided by the present invention can greatly reduce the temperature of the PVC waste through steps such as soaking and quick freezing, thereby increasing the brittleness of the PVC waste, and no smoke will be generated when crushing.

Description

Technical Field

[0001] The invention belongs to the technical field of PVC pipe recycling, and more specifically, relates to a PVC waste pretreatment device and a PVC waste crushing method. Background Art

[0002] PVC is one of the most widely used plastics in the world. However, PVC is difficult to degrade and it is very difficult to treat it by natural degradation, which makes it difficult to dispose of waste. Currently, the recycling of PVC waste mainly relies on physical crushing to make PVC particles, and then the factory uses PVC particles to make various new products.

[0003] In the prior art, physical crushing of PVC waste is mainly achieved by a crusher; the PVC waste is put into the crusher and the high-speed rotating crushing hammer in the crusher is used to crush the PVC waste, thereby obtaining PVC particles that are easy to store and transport.

[0004] The inventors found that when the existing crusher processes PVC waste, the high-speed rotating crushing hammer will rub against the PVC waste violently, causing the PVC waste to heat up, and then a large amount of smoke will be generated during the crushing process. Such smoke is toxic and affects human health. Summary of the invention

[0005] The purpose of the present application is to provide a pretreatment device for PVC waste and a method for crushing PVC waste, so as to solve the technical problem in the prior art that a large amount of smoke is generated during the crushing of PVC waste, and such smoke is toxic.

[0006] To achieve the above purpose, the technical solution adopted in this application is: to provide a pretreatment device for PVC waste, comprising:

[0007] A water storage member is used to be fixed above the ground, and has a hollow interior and an upwardly open structure, and the interior of the water storage member contains liquid;

[0008] A portal frame is used to be fixed on the ground and partly located above the water storage member; the portal frame has a protrusion extending downward into the water storage member and located below the liquid surface, and a conveyor belt arranged around the water storage member and suitable for translation relative to the portal frame; wherein the extending end of the protrusion is connected to the conveyor belt so that part of the conveyor belt is located below the liquid surface, and the conveyor belt is transmission-connected with a driving member;

[0009] A plurality of storage baskets are rotatably connected to the conveyor belt and are arranged at intervals along the length direction of the conveyor belt; the interior of each storage basket is used to store PVC waste, and each storage basket has a plurality of through holes for liquid to pass through, and a discharge port for PVC waste to pass through;

[0010] A quick cooling assembly, which is used to be fixed on the ground and is located outside the conveyor belt, and has a feed port arranged toward the conveyor belt; and

[0011] A discharge assembly is arranged between the quick cooling assembly and the conveyor belt, and is used to connect with the storage basket when any one of the storage baskets moves to above the feed port, and drive the storage basket to rotate until the discharge port faces the feed port, so that the PVC waste in the storage basket falls out through the feed port.

[0012] Preferably, the rapid cooling component comprises:

[0013] A cylinder body, which is used to be installed on the ground and has a hollow interior, and the feed port is arranged on the side of the cylinder body facing the conveyor belt; and

[0014] The liquid nitrogen purge component is communicated with the interior of the cylinder and is used for storing and discharging liquid nitrogen toward the interior of the cylinder to reduce the temperature of the PVC waste inside the cylinder.

[0015] Preferably, the cylinder also has a discharge port connected to the interior thereof, and the rapid cooling component further comprises:

[0016] The material discharging component is arranged inside the cylinder and is used for conveying the PVC waste inside the cylinder to the material discharging port.

[0017] Preferably, the discharge port is arranged on the inner peripheral wall of the cylinder and connected to the inner bottom surface of the cylinder; the discharge member comprises:

[0018] a rotating shaft, rotatably disposed in the cylinder, and its axial direction and rotational axis are both parallel to the axial direction of the cylinder; the rotating shaft is also drivingly connected to a first driving motor for driving the rotating shaft to rotate; and

[0019] A plurality of shifting rods are arranged on the rotating shaft at intervals along the circumference of the rotating shaft, and the lower side surface of each of the shifting rods is connected to the inner bottom surface of the cylinder.

[0020] Preferably, one end of each lever facing away from the rotating shaft abuts against the inner circumferential wall of the cylinder, and has a bending portion extending upward and connected to the inner circumferential wall of the cylinder.

[0021] Preferably, a material tray for receiving PVC waste is provided on the outer peripheral wall of the cylinder and is located at the lower side of the discharge port; and a nitrogen recovery component is also provided on the outer side of the cylinder, the nitrogen recovery component is connected to a suction pipe, and the suction pipe is arranged toward the material tray.

[0022] Preferably, the liquid nitrogen purge component comprises:

[0023] a liquid storage tank, arranged on the upper side of the cylinder, and used for storing liquid nitrogen inside the liquid storage tank; and

[0024] A plurality of nozzles are arranged in parallel inside the cylinder, and each of the nozzles is connected to the liquid storage tank so as to extract the liquid nitrogen in the liquid storage tank and blow the liquid nitrogen toward the PVC waste in the cylinder.

[0025] Preferably, the unloading assembly comprises:

[0026] A rotating disk, rotatably disposed between the quick cooling assembly and the conveyor belt, with its surface disposed toward the conveyor belt; the rotating axis of the rotating disk is parallel to the rotating axis of the material storage basket, and is transmission-connected to a second drive motor for driving the rotating disk to rotate; and

[0027] A discharge rod is fixedly arranged on a side of the rotating disk facing the conveyor belt, and is arranged in parallel with the central axis of the rotating disk, so that when the storage basket and the rotating disk are arranged in parallel, the rotating disk drives the discharge rod to move and drives the storage basket to rotate, so that the discharge port faces the feed port.

[0028] Preferably, the material storage basket is made of ferromagnetic material, and a magnetic component capable of producing a magnetic attraction effect with the ferromagnetic material is arranged on the outer peripheral wall of the discharge rod.

[0029] In the embodiment of the present application, the staff first loads the PVC waste into any one of the storage baskets, and then turns on the driving component to make the conveyor belt move horizontally and the storage basket move, so that the PVC waste passes through the liquid inside the water storage component, and the liquid enters the storage basket through the through hole, and the humidity on the surface of the PVC waste increases; then the conveyor belt drives the storage basket to move above the feed port; at the same time, the unloading component is started to connect the unloading component and the storage basket, and the storage basket is driven to rotate until the discharge port faces the feed port, so that the PVC waste in the storage basket successively passes through the discharge port and the feed port into the quick cooling component; finally, the quick cooling component is started to reduce the temperature of the PVC waste, which greatly increases the brittleness of the PVC waste and makes it easier to be crushed; finally, the PVC waste is transferred to the crushing equipment for the crushing process.

[0030] Compared with the prior art, the PVC waste pretreatment device provided in the embodiment of the present application can significantly reduce the temperature of the PVC waste through steps such as soaking and quick freezing, thereby increasing the brittleness of the PVC waste, and no smoke will be generated during subsequent crushing.

[0031] The technical solution adopted in the present application also provides a PVC waste crushing method, based on the PVC waste pretreatment device described in any one of the above, which comprises the following steps:

[0032] A. Put the PVC waste into any one of the storage baskets;

[0033] B. Turning on the driving member to make the conveyor belt move horizontally and the storage basket move, so that the PVC waste passes through the liquid inside the water storage member, and the liquid enters the storage basket through the through hole, and the humidity on the surface of the PVC waste increases;

[0034] C. Repeat step B so that the humidity of the PVC waste meets the preset requirements;

[0035] D. The conveyor belt drives the storage basket to move above the feed port; at the same time, the unloading assembly is started, so that the unloading assembly and the storage basket are connected, and the storage basket is driven to rotate until the discharge port faces the feed port, so that the PVC waste in the storage basket successively passes through the discharge port and the feed port into the rapid cooling assembly;

[0036] E. starting the quick cooling component to reduce the temperature of the PVC waste;

[0037] F. Transferring the PVC waste to a crushing device for crushing.

[0038] The beneficial effects of the PVC waste crushing method provided in this embodiment are the same as the beneficial effects of the aforementioned PVC waste pretreatment device, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0040] Figure 1 A schematic diagram of the three-dimensional structure of a pretreatment device for PVC waste provided in an embodiment of the present invention;

[0041] Figure 2A schematic front view of the structure of a pretreatment device for PVC waste provided in an embodiment of the present invention;

[0042] Figure 3 A schematic cross-sectional structure diagram of a pretreatment device for PVC waste provided in an embodiment of the present invention;

[0043] Figure 4 A schematic diagram of the three-dimensional structure of a rapid cooling assembly used in an embodiment of the present invention;

[0044] Figure 5 It is a front view structural schematic diagram of the rapid cooling component used in the embodiment of the present invention;

[0045] Figure 6 A schematic diagram of the top view of the rapid cooling assembly used in an embodiment of the present invention;

[0046] Figure 7 For along Figure 5 Schematic diagram of the cross-section structure along the AA line;

[0047] Figure 8 For along Figure 6 Schematic diagram of the cross-sectional structure along the middle BB line;

[0048] Fig. 9 A schematic diagram of the three-dimensional structure of the unloading mechanism used in the embodiment of the present invention;

[0049] Among them, the reference numerals in the figure are:

[0050] 1. Water storage part; 2. Door frame; 21. Raised part; 3. Conveyor belt; 31. Driving component; 4. Storage basket; 51. Cylinder; 511. Feed inlet; 512. Material tray; 52. Liquid nitrogen purge assembly; 521. Liquid storage tank; 522. Nozzle; 6. Discharge component; 61. Rotating shaft; 62. Push rod; 621. Bending part; 63. First driving motor; 7. Discharging assembly; 71. Rotating disk; 72. Discharging rod; 721. Magnetic component; 73. Second driving motor; 8. Nitrogen recovery component; 81. Extraction pipe. DETAILED DESCRIPTION

[0051] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] Please also read Figures 1 to 9 The PVC waste pretreatment device provided by the present application is now described. The PVC waste pretreatment device comprises a water storage part 1, a door frame 2, a plurality of storage baskets 4, a quick cooling component and a discharge component 7.

[0056] The water storage member 1 is used to be fixed above the ground, and has a structure with a hollow interior and an upward opening, and the interior of the water storage member 1 contains liquid; the water storage member 1 can be a water reservoir or a water tank.

[0057] The portal frame 2 is used to be fixed on the ground, and is partially located above the water storage member 1; the portal frame 2 has a protrusion 21 extending downward into the water storage member 1 and located below the liquid surface, and a conveyor belt 3 arranged around the water storage member 1 and suitable for translation relative to the portal frame 2; wherein, the extending end of the protrusion 21 is connected to the conveyor belt 3, so that part of the conveyor belt 3 is located below the liquid surface, and the conveyor belt 3 is transmission-connected with a driving member 31.

[0058] It should be noted that the driving component 31 is a driving motor, which is connected to the conveyor belt 3 through a chain; the conveyor belt 3 adopts chain conveying, and the portal frame 2 is provided with sprockets at the turning position of the conveyor belt 3, and the convex teeth on each sprocket are used to engage with the concave teeth on the conveyor belt 3; chain conveying has the advantages of stable conveying and easy maintenance.

[0059] Multiple storage baskets 4 are rotatably connected to the conveyor belt 3 and are arranged at intervals along the length direction of the conveyor belt 3; the interior of each storage basket 4 is used to store PVC waste, and each storage basket 4 has multiple through holes for liquid to pass through, and a discharge port for PVC waste to pass through; when each storage basket 4 enters the water storage part 1, water can enter the interior of the storage basket 4 through the through holes on the storage basket 4, thereby soaking the PVC waste inside the storage basket 4.

[0060] The quick cooling component is used to be fixed on the ground and is located on the outside of the conveyor belt 3, and has a feed port 511 set toward the conveyor belt 3; each storage basket 4 has an extension section on the side facing the feed port 511, and when the storage basket 4 rotates toward the feed port 511, the extension section is suitable for connecting with the feed port 511 to prevent PVC waste from spilling when dumping.

[0061] The unloading assembly 7 is arranged between the quick cooling assembly and the conveyor belt 3, and is used to connect with the storage basket 4 when any one of the storage baskets 4 moves above the feed port 511, and drive the storage basket 4 to rotate until the discharge port is facing the feed port 511, so that the PVC waste in the storage basket 4 falls out through the feed port 511.

[0062] In the embodiment of the present application, the staff first loads the PVC waste into any one of the storage baskets 4, and then turns on the driving component 31 to make the conveyor belt 3 move horizontally and the storage basket 4 move, so that the PVC waste passes through the liquid inside the water storage component 1, and the liquid enters the storage basket 4 through the through hole, and the humidity on the surface of the PVC waste increases; then the conveyor belt 3 drives the storage basket 4 to move above the feed port 511; at the same time, the unloading component 7 is started, so that the unloading component 7 and the storage basket 4 are connected, and the storage basket 4 is driven to rotate until the discharge port faces the feed port 511, so that the PVC waste in the storage basket 4 successively passes through the discharge port and the feed port 511 into the quick cooling component; finally, the quick cooling component is started to reduce the temperature of the PVC waste, which greatly increases the brittleness of the PVC waste and makes it easier to be crushed; finally, the PVC waste is transferred to the crushing equipment for the crushing process.

[0063] Compared with the prior art, the PVC waste pretreatment device provided in the embodiment of the present application can significantly reduce the temperature of the PVC waste through steps such as soaking and quick freezing, thereby increasing the brittleness of the PVC waste, and no smoke will be generated during subsequent crushing.

[0064] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the rapid cooling component includes a barrel 51 and a liquid nitrogen purge component.

[0065] The cylinder 51 is used for installation on the ground and is arranged on one side of the water storage member 1 . It has a hollow structure inside, and the feed port 511 is arranged on the side of the cylinder 51 facing the conveyor belt 3 .

[0066] The liquid nitrogen purging component is in communication with the interior of the barrel 51 , and is used to store and discharge liquid nitrogen toward the interior of the barrel 51 , so as to reduce the temperature of the PVC waste inside the barrel 51 .

[0067] By adopting the above technical solution, when the unloading component 7 transfers the PVC waste inside the storage basket 4 to the feed port 511, the liquid nitrogen purge component 52 can instantly spray liquid nitrogen on the PVC waste falling into the cylinder 51. The liquid nitrogen can instantly freeze the PVC waste with increased humidity, and the temperature of the PVC waste is greatly reduced, thereby reducing the ductility of the PVC waste and enhancing its brittleness, which is convenient for subsequent crushing.

[0068] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the cylinder 51 also has a discharge port connected to the interior thereof, and the rapid cooling component also includes a discharge member 6.

[0069] The discharge member 6 is disposed inside the cylinder 51 and is used to transport the PVC waste inside the cylinder 51 to the discharge port.

[0070] By adopting the above technical solution, since the PVC waste with water on the surface may be frozen on the bottom surface or side wall of the cylinder 51 after being rapidly cooled by liquid nitrogen, the discharge component 6 can process the frozen PVC waste so that it can be separated from the inner bottom surface or side wall of the cylinder 51 and then transported to the discharge port.

[0071] In some embodiments, see Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the discharge port is arranged on the inner peripheral wall of the cylinder 51 and connected to the inner bottom surface of the cylinder 51; the discharge member 6 includes a rotating shaft 61 and a plurality of levers 62.

[0072] The rotating shaft 61 is rotatably disposed in the cylinder 51 , and its axial direction and the direction of the rotating shaft 61 are both parallel to the axial direction of the cylinder 51 ; the rotating shaft 61 is also transmission-connected to a first driving motor 63 for driving the rotating shaft 61 to rotate.

[0073] A plurality of levers 62 are disposed on the rotating shaft 61 at intervals along the circumferential direction of the rotating shaft 61 , and the lower side surface of each lever 62 is connected to the inner bottom surface of the cylinder 51 .

[0074] By adopting the above technical solution, by turning on the first driving motor 63, the rotating shaft 61 can be driven to rotate around its own axis, thereby driving multiple levers 62 to rotate. When the levers 62 are in contact with the frozen PVC waste, the levers 62 can push the PVC waste to separate from the inner bottom surface of the cylinder 51.

[0075] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, one end of each lever 62 facing away from the rotating shaft 61 abuts against the inner wall of the cylinder 51, and has a bending portion 621 extending upward and connected to the inner wall of the cylinder 51.

[0076] By adopting the above technical solution, when the rotating shaft 61 drives the multiple levers 62 to rotate, the extension portion on each lever 62 can clean up the PVC waste frozen on the inner wall of the cylinder 51 to prevent the frozen PVC waste from accumulating on the inner wall of the cylinder 51.

[0077] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the pretreatment device for PVC waste provided by the present invention, a material tray 512 is provided on the outer peripheral wall of the cylinder 51, which is located at the lower side of the discharge port and is used to receive PVC waste; and a nitrogen recovery component 8 is also provided on the outer side of the cylinder 51, and the nitrogen recovery component 8 is connected to a suction pipe 81, and the suction pipe 81 is arranged toward the material tray 512.

[0078] By adopting the above technical solution, liquid nitrogen will generate a large amount of nitrogen gas after volatilization. Long-term inhalation of high-concentration nitrogen gas is harmful to the human body; the nitrogen recovery device can extract the volatilized nitrogen gas, and the recovered nitrogen gas can be purified again to make liquid nitrogen, saving costs.

[0079] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the liquid nitrogen purge component includes a liquid storage tank 521 and a plurality of nozzles 522.

[0080] The liquid storage tank 521 is arranged on the upper side of the cylinder 51, and the liquid nitrogen is stored inside the liquid storage tank 521. The size of the liquid storage tank 521 can be adjusted according to the processing amount of the PVC waste.

[0081] A plurality of nozzles 522 are arranged in parallel inside the barrel 51 , and each nozzle 522 is connected to the liquid storage tank 521 for extracting liquid nitrogen in the liquid storage tank 521 and blowing liquid nitrogen toward the PVC waste in the barrel 51 .

[0082] By adopting the above technical solution, the multiple nozzles 522 can evenly spray liquid nitrogen onto the PVC waste entering the barrel 51, thereby improving the rapid cooling efficiency of the PVC waste.

[0083] In some embodiments, please refer to Figures 1 to 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the unloading assembly 7 includes a rotating disk 71 and a unloading rod 72.

[0084] The rotating disk 71 is rotatably arranged between the quick cooling assembly and the conveyor belt 3, and its surface is arranged toward the conveyor belt 3; the rotating shaft 61 of the rotating disk 71 is parallel to the rotating shaft 61 of the storage basket 4, and is transmission-connected to a second driving motor 73 for driving its rotation.

[0085] The discharge rod 72 is fixedly arranged on the side of the rotating disk 71 facing the conveyor belt 3, and is arranged in parallel with the central axis of the rotating disk 71, so that when the storage basket 4 and the rotating disk 71 are arranged in parallel, the rotating disk 71 drives the discharge rod 72 to move and drives the storage basket 4 to rotate so that the discharge port faces the feed port 511; after the PVC waste inside the storage basket 4 is dumped, the rotating disk 71 drives the discharge rod 72 to move in the opposite direction to restore the discharge basket to its original position.

[0086] By adopting the above technical solution, the purpose of dumping the PVC waste in the storage basket 4 can be achieved by simply turning it, and the rotation logic of the rotating disk 71 can be automatically controlled by a pre-set program.

[0087] In some embodiments, see Fig. 9 As a specific embodiment of the PVC waste pretreatment device provided by the present invention, the storage basket 4 is made of ferromagnetic material, and a magnetic component 721 capable of producing a magnetic attraction effect with the ferromagnetic material is provided on the outer peripheral wall of the discharge rod 72; the magnetic component 721 can be a permanent magnet or an electromagnet.

[0088] By adopting the above-mentioned technical solution, when the unloading rod 72 pushes the storage basket 4 to rotate until the discharge port faces the feed port 511, the magnetic component 721 can always ensure that the storage basket 4 is in close contact with the unloading rod 72, thereby preventing the storage basket 4 from spilling out the internal PVC waste due to rotational inertia when rotating, thereby ensuring the stability of the storage basket 4 during the unloading process.

[0089] The technical solution adopted in the present application also provides a PVC waste crushing method, based on any of the above-mentioned PVC waste pretreatment devices, which comprises the following steps:

[0090] A. Put the PVC waste into any one of the storage baskets 4.

[0091] B. Turn on the driving member 31 to make the conveyor belt 3 move horizontally and the storage basket 4 move, so that the PVC waste passes through the liquid inside the water storage member 1 and the liquid enters the storage basket 4 through the through hole, thereby achieving the purpose of increasing the humidity of the surface of the PVC waste.

[0092] C. Repeat step B to make the humidity of the PVC waste meet the preset requirements; increasing the humidity on the surface of the PVC waste can enhance the efficiency of rapid cooling of the PVC waste.

[0093] D. The conveyor belt 3 drives the storage basket 4 to move above the feed port 511; at the same time, the unloading assembly 7 is started, so that the unloading assembly 7 and the storage basket 4 are connected, and the storage basket 4 is driven to rotate until the discharge port faces the feed port 511, so that the PVC waste in the storage basket 4 enters the quick cooling assembly through the discharge port and the feed port 511 in turn.

[0094] E. Start the quick cooling component to reduce the temperature of the PVC waste.

[0095] F. Transfer the PVC waste to the crushing equipment for crushing process.

[0096] By adopting the above-mentioned crushing method, the temperature of the PVC waste can be greatly reduced through steps such as soaking and quick freezing, thereby increasing the brittleness of the PVC waste, and no smoke will be generated during subsequent crushing.

[0097] The beneficial effects of the PVC waste crushing method provided in this embodiment are the same as the beneficial effects of the aforementioned PVC waste pretreatment device, which will not be repeated here.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pretreatment device for PVC waste, characterized in that: include: A water storage member (1) is used to be fixed above the ground, and has a structure with a hollow interior and an upward opening, and the interior of the water storage member (1) contains liquid; A portal frame (2) is used to be fixed on the ground and partially located above the water storage member (1); the portal frame (2) has a protrusion (21) extending downward into the water storage member (1) and located below the liquid surface, and a conveyor belt (3) arranged around the water storage member (1) and suitable for translation relative to the portal frame (2); wherein the extending end of the protrusion (21) is connected to the conveyor belt (3) so that part of the conveyor belt (3) is located below the liquid surface, and the conveyor belt (3) is drivingly connected to a driving member (31); A plurality of material storage baskets (4) are rotatably connected to the conveyor belt (3) and are arranged at intervals along the length direction of the conveyor belt (3); the interior of each material storage basket (4) is used to store PVC waste, and each material storage basket (4) has a plurality of through holes for liquid to pass through, and a discharge port for PVC waste to pass through; A quick cooling component, which is used to be fixed on the ground and is located outside the conveyor belt (3), and has a feed port (511) arranged toward the conveyor belt (3); and A discharge assembly (7) is arranged between the quick cooling assembly and the conveyor belt (3), and is used to connect with the storage basket (4) when any one of the storage baskets (4) moves to above the feed port (511), and drive the storage basket (4) to rotate until the discharge port of the storage basket (4) faces the feed port (511), so that the PVC waste in the storage basket (4) falls out through the feed port (511); The rapid cooling component comprises: A cylinder (51) is used for installation on the ground and has a hollow interior, and the feed port (511) is arranged on a side of the cylinder (51) facing the conveyor belt (3); and a liquid nitrogen purge component, which is in communication with the interior of the barrel (51) and is used to store and discharge liquid nitrogen toward the interior of the barrel (51) so as to reduce the temperature of the PVC waste inside the barrel (51); The cylinder (51) also has a discharge port communicating with the interior thereof, and the rapid cooling component further comprises: A discharge member (6) is arranged inside the cylinder (51) and is used to transport the PVC waste inside the cylinder (51) to the discharge port; The discharge port is arranged on the inner peripheral wall of the cylinder (51) and is connected to the inner bottom surface of the cylinder (51); the discharge member (6) comprises: a rotating shaft (61) rotatably disposed in the cylinder (51), and having its rotating axis parallel to the axis of the cylinder (51); the rotating shaft (61) is also drivingly connected to a first driving motor (63) for driving the rotating shaft to rotate; and a plurality of levers (62) arranged on the rotating shaft (61) at intervals along the circumference of the rotating shaft (61), and the lower side surface of each lever (62) is connected to the inner bottom surface of the cylinder (51); One end of each lever (62) facing away from the rotating shaft (61) abuts against the inner peripheral wall of the cylinder (51), and comprises a bent portion (621) extending upward and connected to the inner peripheral wall of the cylinder (51).

2. A PVC waste pretreatment device as claimed in claim 1, characterized in that: A material tray (512) is provided on the outer peripheral wall of the cylinder (51) and is located below the material outlet and is used to receive PVC waste. Furthermore, a nitrogen recovery component (8) is also provided on the outer side of the cylinder (51), and the nitrogen recovery component (8) is connected to a material extraction pipe (81), and the material extraction pipe (81) is arranged toward the material tray (512).

3. A pretreatment device for PVC waste as claimed in claim 1, characterized in that: The liquid nitrogen purge component comprises: a liquid storage tank (521), arranged on the upper side of the cylinder (51), the interior of which is used to store liquid nitrogen; and A plurality of nozzles (522) are arranged in parallel inside the barrel (51), and each of the nozzles (522) is connected to the liquid storage tank (521) so as to extract the liquid nitrogen in the liquid storage tank (521) and purge the liquid nitrogen toward the PVC waste in the barrel (51).

4. A pretreatment device for PVC waste as claimed in claim 1, characterized in that: The unloading assembly (7) comprises: a rotating disk (71) rotatably disposed between the quick cooling assembly and the conveyor belt (3), with its surface disposed toward the conveyor belt (3); the rotating axis of the rotating disk (71) is parallel to the rotating axis of the material storage basket (4), and is transmission-connected to a second drive motor (73) for driving the rotating disk to rotate; and A discharge rod (72) is fixedly arranged on a side of the rotating disk (71) facing the conveyor belt (3), and is arranged in parallel with the central axis of the rotating disk (71). When the storage basket (4) and the rotating disk (71) are arranged in parallel, the rotating disk (71) drives the discharge rod (72) to move and drives the storage basket (4) to rotate, so that the discharge port of the storage basket (4) faces the feed port (511).

5. A pretreatment device for PVC waste as claimed in claim 4, characterized in that: The material storage basket (4) is made of ferromagnetic material, and a magnetic component (721) capable of generating a magnetic attraction effect with the ferromagnetic material is provided on the outer peripheral wall of the discharge rod (72).

6. A method for crushing PVC waste, using the PVC waste pretreatment device according to any one of claims 1 to 5, characterized in that: The following steps are involved: A. Loading the PVC waste into any one of the storage baskets (4); B. turning on the driving member (31) to make the conveyor belt (3) move horizontally and the storage basket (4) move, so that the PVC waste passes through the liquid inside the water storage member (1), and the liquid enters the storage basket (4) through the through hole, thereby increasing the humidity on the surface of the PVC waste; C. Repeat step B so that the humidity of the PVC waste meets the preset requirements; D. The conveyor belt (3) drives the storage basket (4) to move above the feed port (511); at the same time, the unloading assembly (7) is started so that the unloading assembly (7) and the storage basket (4) are connected, and the storage basket (4) is driven to rotate until the discharge port of the storage basket (4) faces the feed port (511), so that the PVC waste in the storage basket (4) enters the quick cooling assembly through the discharge port and the feed port (511) in turn; E. starting the quick cooling component to reduce the temperature of the PVC waste; F. Transferring the PVC waste to a crushing device for crushing.

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