Collection equipment and collection method for plastic processing based on tailings recovery

Abstract

The present invention relates to the technical field of plastic recycling, and more specifically, to a collection device for plastic processing based on tailings recycling and a collection method thereof. The device comprises a hopper for receiving plastic tailings and a processing device arranged at the bottom of the hopper. In the present invention, the plastic tailings are put into a container through the hopper, and when a pressing body in the container presses the plastic tailings, the airflow in the container is pushed to flow through a gas collecting structure, thereby taking away the water vapor generated in the container during the drying process, thereby ensuring the drying effect of the plastic tailings and reducing the water content in the plastic recyclables.

Description

Technical Field

[0001] The invention relates to the technical field of plastic recycling, in particular to a collection device for plastic processing based on tailing recycling and a collection method thereof. Background Art

[0002] Plastic processing generally includes processes such as plastic mixing, molding, machining, joining, modification and assembly. It is a general term for various processes for converting synthetic resins or plastics into plastic products. During the plastic processing process, waste or residual materials, namely tailings, are generated. In order to improve the utilization rate of raw materials, the tailings need to be recycled.

[0003] Plastic recycling refers to the use of a certain recycling process to recycle waste plastics and achieve the purpose of turning waste into treasure. For example, CN114589839B relates to a rapid collection and processing device for waste plastic recycling and processing and a method of use. When a set of compression swing plates gradually approaches the central clamping plate, another set of compression swing plates gradually separates from the central clamping plate, so that the opening of the compression inner chamber corresponds to the feed slot, and then multiple waste plastic products can be put into the compression inner chamber again;

[0004] The invention can prevent plastic products from popping out and keep the compressed shape of plastic products regular by sealing the opening of the compression chamber, expand the storage space for centralized recycling to a certain extent, and increase the number of waste plastic bottles that can be accommodated. However, due to the influence of factors such as high molding temperature, long processing time, and humid environment during the processing and production of plastics, plastic products may contain a certain amount of moisture, and the device does not have a corresponding moisture removal device, so that water accounts for a considerable proportion of the total mass of the final recyclables of the device, and an additional drying process is required to remove water. Moreover, more processing processes will increase the cost of plastic recycling.

[0005] In order to remove water from plastic tailings while recycling them, a collection device for plastic processing based on tailings recycling and a collection method thereof are proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a collection device for plastic processing based on tailing recovery and a collection method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, one of the objectives of the present invention is to provide a collection device for plastic processing based on tailings recovery, comprising a hopper for receiving plastic tailings and a processing device arranged at the bottom of the hopper;

[0008] The processing device includes a container disposed at the bottom of the hopper for containing and drying plastic tailings, and a pressing body disposed in the container for compressing the plastic tailings. An air collecting structure for limiting the flow direction of the airflow is provided in the container. When the pressing body presses the plastic tailings, it pushes the airflow in the container to flow through the air collecting structure, thereby taking away the water vapor generated in the container during the drying process, thereby reducing the water content in the plastic recyclables.

[0009] As a further improvement of the present technical solution, the containing body includes a shell and a bracket arranged on the outer wall of the shell, the upper and lower surfaces of the shell are exposed, a partition is provided in the middle part of the shell, the space inside the shell is separated by the partition to form a pressing bin and a drying bin from top to bottom, the top of the pressing bin is connected to the bottom of the hopper, the bottom of the drying bin is rotatably connected with a movable plate for controlling the discharge of plastic tailings, the inner wall of the drying bin is provided with a heating wire for drying the plastic tailings, and the pressing body includes a hydraulic press arranged in the pressing bin and a pressing plate arranged at one end of the hydraulic press.

[0010] As a further improvement of the present technical solution, the processing device also includes an upper closing body, which includes an upper closing plate slidably connected to the top of the inner wall of the pressing bin, and a first spring is provided at one end of the upper closing plate close to the pressing plate, and the upper closing plate is connected to the back of the pressing plate through the arranged first spring.

[0011] As a further improvement of the technical solution, the bottom surface of the upper sealing plate is provided with a plurality of mutually interconnected air holes for air flow to pass through.

[0012] As a further improvement of the present technical solution, the processing device further comprises a lower closing body, the lower closing body comprises a lower sealing plate plugged into and matched with the partition, and the lower sealing plate is connected to one end of the pressing plate close to the hydraulic press.

[0013] As a further improvement of the present technical solution, the bottom end of the pressure plate is connected to a connecting frame, and a meshing plate is connected to the connecting frame for sliding up and down. A corresponding slot is provided in the lower sealing plate, and one end of the meshing plate close to the slot is engaged with the slot, and the other end surface of the meshing plate is an inclined surface. A wedge block for contacting the inclined surface of the meshing plate is correspondingly provided on the inner wall of the partition, and the lower sealing plate is connected to the inner wall of the partition by a second spring.

[0014] As a further improvement of the present technical solution, the air collecting structure includes an air inlet cavity opened on the inner wall of the pressing bin and a circulation cavity opened on the inner wall of the drying bin, the air inlet cavity is connected with the circulation cavity, an exhaust port connected with the drying bin is opened at the bottom of the circulation cavity, and the air outlet direction of the exhaust port is toward the partition.

[0015] As a further improvement of the technical solution, a one-way air valve is provided near the pressing chamber in the air inlet cavity to limit the one-way flow of air into the air inlet cavity.

[0016] As a further improvement of the present technical solution, the processing device also includes a mixing body, which includes a cross bar and a plurality of mixing rods arranged on the cross bar, both ends of the cross bar are slidably connected to the inner wall of the drying bin, a sleeve is provided at the bottom of the lower sealing plate, and a push rod is provided at the top of the cross bar, and the push rod is plugged into and matched with the bottom of the sleeve.

[0017] The second object of the present invention is to provide a method for collecting using the above-mentioned plastic processing collection equipment based on tailings recovery, comprising the following steps:

[0018] S1. After the plastic tailings are put into the container through the hopper, the hydraulic press drives the pressing plate to press the plastic tailings;

[0019] S2, the hydraulic press drives the pressing plate to reset, and drives the lower sealing plate to move toward the hydraulic press, so that the bottom of the pressing bin is connected with the drying bin, and the plastic tailings enter the drying bin through the partition;

[0020] S3. Under the continuous heating of the heating wire, the water contained in the plastic tailings is separated from the plastic tailings in the form of water vapor;

[0021] S4. The hydraulic press drives the pressing plate to push the gas in the pressing bin into the air inlet cavity, and then passes through the air inlet cavity and the flow cavity, and finally ejects from the exhaust port, taking away the water vapor accumulated in the drying bin and discharging it to the outside through the pressing bin and the hopper, completing the recovery and drying of the plastic tailings.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the collection equipment for plastic processing based on tailings recovery and the collection method thereof, the plastic tailings are put into the receiving body through the hopper. When the pressing body in the receiving body presses the plastic tailings, it will push the airflow in the receiving body to flow through the gas collecting structure, thereby taking away the water vapor generated in the receiving body during the drying process, thereby ensuring the drying effect of the plastic tailings and reducing the water content in the plastic recyclables.

[0024] 2. In the collection equipment and collection method for plastic processing based on tailings recovery, when the plastic tailings are pressed, the hydraulic press drives the pressing plate to reset. During the resetting process, the pressing plate drives the lower sealing plate to move toward the hydraulic press, so that the bottom of the pressing bin is connected with the drying bin. The plastic tailings can enter the drying bin through the partition for drying, which is conducive to the simultaneous processing of the recovery and drying of the plastic tailings, reducing subsequent processes and reducing recycling costs.

[0025] 3. In the collection equipment and collection method for plastic processing based on tailings recovery, when the hydraulic press drives the pressing plate to move, the pressing plate will push the gas in the pressing bin into the air inlet chamber, and then pass through the air inlet chamber and the circulation chamber, and finally spray out from the exhaust port, forming an air flow that carries water vapor and flows upward through the partition. This air flow will take away the water vapor accumulated in the drying bin and pass through the pressing bin and the hopper to be discharged to the outside, so as to avoid the accumulation of water vapor in the drying bin and affect the drying effect of the plastic tailings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is the overall cross-sectional structure diagram of the present invention;

[0028] Figure 3 It is a cross-sectional structural diagram of the processing device of the present invention;

[0029] Figure 4 It is a cross-sectional structural diagram of the container of the present invention;

[0030] Figure 5 It is a cross-sectional structural diagram of the shell of the present invention;

[0031] Figure 6 It is a cross-sectional structural diagram of the bottom of the pressed body of the present invention;

[0032] Figure 7 It is a bottom structural diagram of the upper closed body of the present invention;

[0033] Figure 8 It is a cross-sectional structural diagram of the lower closed body of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the mixing body of the present invention.

[0035] The meaning of each number in the figure is:

[0036] 1. Hopper;

[0037] 2. Processing device; 21. Container; 211. Shell; 2111. Partition; 2112. Air inlet chamber; 2113. Circulation chamber; 2114. Exhaust port; 2115. Slide groove; 212. Bracket; 213. Movable plate; 214. Heating wire; 22. Pressing body; 221. Hydraulic press; 222. Pressing plate; 223. Connecting frame; 224. Engaging plate; 23. Upper closing body; 231. Upper sealing plate; 232. End plate; 233. First spring; 234. Air hole; 24. Lower closing body; 241. Lower sealing plate; 242. Slot; 243. Second spring; 244. Sleeve; 25. Evenly distributing body; 251. Cross bar; 252. Displacing rod; 253. Ejector rod. DETAILED DESCRIPTION

[0038] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] 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.

[0041] See also Figure 1-Figure 9 As shown, one of the purposes of the present invention is to provide a collection device for plastic processing based on tailings recovery, comprising a hopper 1 for receiving plastic tailings and a processing device 2 arranged at the bottom of the hopper 1;

[0042] The processing device 2 includes a container 21 arranged at the bottom of the hopper 1 for accommodating and drying plastic tailings, and a pressing body 22 arranged in the container 21 for compressing the plastic tailings to reduce the size of the plastic tailings. The container 21 is provided with an air collecting structure for limiting the flow direction of the airflow. During the recycling process of plastic tailings, the plastic tailings are put into the container 21 through the hopper 1. When the pressing body 22 presses the plastic tailings in the container 21, it will push the airflow in the container 21 to flow through the air collecting structure, thereby taking away the water vapor generated in the container 21 during the drying process, thereby ensuring the drying effect of the plastic tailings and reducing the water content in the plastic recyclables.

[0043] After the plastic tailings are put into the container 21 through the hopper 1, the size of the plastic tailings needs to be compressed and dried so that the container 21 can collect and accommodate more plastic tailings. First, the plastic tailings need to be compressed to reduce the size of the plastic tailings. The container 21 includes a shell 211 and a bracket 212 arranged on the outer wall of the shell 211. The upper and lower surfaces of the shell 211 are exposed. A partition 2111 is arranged in the middle of the shell 211. The space in the shell 211 is separated by the partition 2111 to form a compression system from top to bottom. The top of the pressing bin is connected to the bottom of the hopper 1, and the bottom of the drying bin is rotatably connected with a movable plate 213 for controlling the discharge of plastic tailings. The inner wall of the drying bin is provided with a heating wire 214 for drying the plastic tailings. The pressing body 22 includes a hydraulic press 221 arranged in the pressing bin and a pressing plate 222 arranged at one end of the hydraulic press 221. When the plastic tailings fall into the pressing bin of the containing body 21 through the hopper 1, the hydraulic press 221 drives the pressing plate 222 to move toward the plastic tailings to extrude the plastic tailings.

[0044] During the extrusion process, in order to ensure the extrusion effect on the plastic tailings, the processing device 2 also includes an upper closing body 23, which includes an upper closing plate 231 slidably connected to the top of the inner wall of the pressing bin, and an end plate 232 is provided at one end of the upper closing plate 231 close to the pressing plate 222, and a first spring 233 is provided on the side wall of the end plate 232. The upper closing plate 231 is connected to the back of the pressing plate 222, that is, the side close to the hydraulic press 221 through the first spring 233. When the hydraulic press 221 drives the pressing plate 222 to extrude, the upper closing plate 231 is driven by the pressing plate 222 to close the connection between the pressing bin and the bottom of the hopper 1, so that the plastic tailings are in a space surrounded by six sides, which can ensure the extrusion effect of the pressing plate 222 on the plastic tailings. The first spring 233 is provided to connect so that the upper closing plate 231 can have a movable space relative to the pressing plate 222.

[0045] After the plastic tailings are compressed, the plastic tailings need to be dried to reduce the water content. In order to facilitate the plastic tailings to enter the drying bin, the processing device 2 also includes a lower closing body 24, and the lower closing body 24 includes a lower sealing plate 241 that is plugged with the partition 2111. The lower sealing plate 241 is connected to the end of the pressing plate 222 close to the hydraulic press 221. When the plastic tailings are compressed, the hydraulic press 221 drives the pressing plate 222 to reset. During the resetting process, the pressing plate 222 drives the lower sealing plate 241 to the hydraulic press 221. The press 221 moves so that the bottom of the pressing bin is connected to the drying bin, and the plastic tailings can enter the drying bin through the partition 2111 for drying. In order to avoid affecting the pressing effect of the next batch of plastic tailings, the bottom of the pressing plate 222 is connected to a connecting frame 223, and a jaw plate 224 is connected to the connecting frame 223 for sliding up and down. A corresponding card slot 242 is opened in the lower sealing plate 241, and one end of the jaw plate 224 close to the card slot 242 is located in the card slot 242, and one end of the jaw plate 224 close to the card slot 242 is connected to the card slot 242. The other end surface of the meshing plate 224 is an inclined surface, and the inner wall of the partition 2111 is correspondingly provided with a wedge for contacting the inclined surface of the meshing plate 224. The surface of the lower sealing plate 241 is provided with a second spring 243. The lower sealing plate 241 is connected to the inner wall of the partition 2111 through the second spring 243. When the hydraulic press 221 drives the pressure plate 222 to start to reset, the pressure plate 222 drives the lower sealing plate 241 to overcome the elastic force of the second spring 243 to the hydraulic press 221 through the meshing plate 224 and the slot 242. 1 moves, so that the bottom of the pressing bin is connected with the drying bin. When the hydraulic press 221 drives the pressing plate 222 to complete the reset, the inclined surface of the jaw plate 224 contacts the wedge block, so that the jaw plate 224 slides along the connecting frame 223 and disengages from the card slot 242. At this time, under the elastic force of the second spring 243, the lower sealing plate 241 is reset to separate the connection between the bottom of the pressing bin and the drying bin, so that the next batch of plastic tailings can still be in the space surrounded by six sides, thereby avoiding affecting the pressing effect of the next batch of plastic tailings;

[0046] After the plastic tailings that have been compressed and shrunk in size enter the drying bin, under the continuous heating of the heating wire 214, the water contained in the plastic tailings separates from the plastic tailings in the form of water vapor. In order to prevent the water vapor from accumulating in the drying bin and affecting the drying of the plastic tailings, the gas collecting structure includes an air inlet chamber 2112 opened on the inner wall of the pressing bin and a flow chamber 2113 opened on the inner wall of the drying bin. The air inlet chamber 2112 is connected to the flow chamber 2113. An exhaust port 2114 connected to the drying bin is opened at the bottom of the flow chamber 2113, and the exhaust direction of the exhaust port 2114 is toward the partition 2111. When the hydraulic press 221 drives the pressing plate 222 to move, the pressing plate 222 will push the gas in the pressing bin into the air inlet chamber 2112, and then pass through the air inlet chamber 2112 and the flow chamber 2113, and finally eject from the exhaust port 2114, forming a gas that is wrapped with water vapor and penetrates into the drying bin. The airflow flowing upward through the partition 2111 will take away the water vapor accumulated in the drying bin and discharge it to the outside through the pressing bin and the hopper 1. In addition, the bottom surface of the upper sealing plate 231 is provided with a plurality of mutually interconnected air holes 234 for air flow to pass through. When the hydraulic press 221 drives the pressing plate 222 to press, the volume of the six-sided enclosed space where the plastic tailings are located is reduced, and the air inside it flows to the outside of the six-sided enclosed space through the air holes 234. Firstly, it can increase the amount of gas entering the air inlet chamber 2112 and improve the gas collection efficiency of the air inlet chamber 2112. Secondly, it can reduce the difficulty of pressing the plastic tailings. The air inlet chamber 2112 is provided with a one-way valve near the pressing bin to limit the one-way flow of air into the air inlet chamber 2112, so that the air in the pressing bin can only enter the air inlet chamber 2112 in one direction, avoiding changes in the direction of the air flow in the gas collection structure, thereby ensuring the gas collection efficiency.

[0047] It is worth noting that after the pressed plastic tailings pass through the partition 2111, they will fall into the drying bin, which is located just below the connection between the bottom of the pressing bin and the drying bin. As the amount of plastic tailings increases, the connection between the bottom of the pressing bin and the drying bin will be blocked, which will not maximize the use of the space in the drying bin and will affect the subsequent plastic tailings entering the drying bin. In order to avoid this situation, the processing device 2 also includes a leveling body 25, which includes a cross bar 251 and a plurality of levers 252 arranged on the cross bar 251. A sliding groove 2115 is provided on the inner wall of the drying bin, and both ends of the cross bar 251 are located in the sliding groove 211 5, both ends of the cross bar 251 are slidably connected with the inner wall of the drying bin through the sliding groove 2115, the sliding groove 2115 is a parallelogram groove, the bottom of the lower sealing plate 241 is provided with a sleeve 244, and the top of the cross bar 251 is provided with a push rod 253, and the push rod 253 is plugged with the bottom of the sleeve 244. When the pressing plate 222 drives the lower sealing plate 241 to move, the lower sealing plate 241 simultaneously drives the cross bar 251 to move along the inner wall of the drying bin, and the lever 252 contacts and moves the plastic tailings accumulated at the connection between the bottom of the pressing bin and the drying bin, so that the plastic tailings can be evenly spread in the drying bin, realizing the maximum utilization of the space in the drying bin.

[0048] The second object of the present invention is to provide a method for collecting the tailings using the above-described plastic processing collection device based on tailings recovery, the specific steps of which are as follows:

[0049] S1. After the plastic tailings are put into the containing body 21 through the hopper 1, the hydraulic press 221 drives the pressing plate 222 to squeeze, and the upper sealing plate 231 is driven by the pressing plate 222 to seal the connection between the pressing bin and the bottom of the hopper 1, so that the plastic tailings are in the space surrounded by six sides, and the plastic tailings are pressed;

[0050] S2. When the hydraulic press 221 drives the pressing plate 222 to start to reset, the pressing plate 222 drives the lower sealing plate 241 to overcome the elastic force of the second spring 243 and move toward the hydraulic press 221 through the engaging meshing plate 224 and the slot 242, so that the bottom of the pressing bin is connected with the drying bin, and the plastic tailings can enter the drying bin through the partition 2111;

[0051] S3. Under the continuous heating of the heating wire 214, the water contained in the plastic tailings is separated from the plastic tailings in the form of water vapor;

[0052] S4. When the hydraulic press 221 drives the pressing plate 222 to move, the pressing plate 222 will push the gas in the pressing bin into the air inlet chamber 2112, and then pass through the air inlet chamber 2112 and the flow chamber 2113, and finally be ejected from the exhaust port 2114, forming an airflow that carries water vapor and flows upward through the partition 2111. This airflow will take away the water vapor accumulated in the drying bin and pass through the pressing bin and the hopper 1 to be discharged to the outside, thereby completing the recovery and drying of the plastic tailings.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A collection device for plastic processing based on tailings recovery, characterized in that: It comprises a hopper (1) for receiving plastic tailings and a processing device (2) arranged at the bottom of the hopper (1); The processing device (2) comprises a container (21) disposed at the bottom of the hopper (1) for accommodating and drying the plastic tailings, and a pressing body (22) disposed in the container (21) for compressing the plastic tailings, wherein a gas collecting structure for limiting the flow direction of the air flow is provided in the container (21), and when the pressing body (22) presses the plastic tailings, the air flow in the container (21) is pushed to flow through the gas collecting structure, thereby taking away the water vapor generated in the container (21) during the drying process, thereby reducing the water content in the plastic recyclate; The containing body (21) comprises a shell (211) and a bracket (212) arranged on the outer wall of the shell (211); the upper and lower surfaces of the shell (211) are exposed; a partition (2111) is arranged in the middle of the shell (211); the space inside the shell (211) is separated by the partition (2111) to form a pressing bin and a drying bin from top to bottom; the top of the pressing bin is connected to the bottom of the hopper (1); the bottom of the drying bin is rotatably connected to a movable plate (213) for controlling the discharge of plastic tailings; the inner wall of the drying bin is provided with a heating wire (214) for drying the plastic tailings; the pressing body (22) comprises a hydraulic press (221) arranged in the pressing bin and a pressing plate (222) arranged at one end of the hydraulic press (221); The processing device (2) further comprises a lower closed body (24), the lower closed body (24) comprising a lower sealing plate (241) plugged into and matched with the partition plate (2111), the lower sealing plate (241) being connected to one end of the pressing plate (222) close to the hydraulic press (221); The air collecting structure comprises an air inlet cavity (2112) opened on the inner wall of the pressing bin and a circulation cavity (2113) opened on the inner wall of the drying bin, the air inlet cavity (2112) being in communication with the circulation cavity (2113), an exhaust port (2114) in communication with the drying bin being opened at the bottom of the circulation cavity (2113), and an exhaust direction of the exhaust port (2114) being toward the partition (2111).

2. The collection equipment for plastic processing based on tailings recovery according to claim 1 is characterized in that: The processing device (2) further comprises an upper closing body (23), the upper closing body (23) comprising an upper sealing plate (231) slidably connected to the top of the inner wall of the pressing bin, a first spring (233) being provided at one end of the upper sealing plate (231) close to the pressing plate (222), and the upper sealing plate (231) being connected to the back side of the pressing plate (222) via the provided first spring (233).

3. The collection device for plastic processing based on tailings recovery according to claim 2 is characterized in that: The bottom surface of the upper sealing plate (231) is provided with a plurality of mutually connected air holes (234) for air flow to pass through.

4. The collection equipment for plastic processing based on tailings recovery according to claim 1 is characterized in that: The bottom end of the pressure plate (222) is connected to a connecting frame (223), and a meshing plate (224) is slidably connected to the connecting frame (223) up and down. A corresponding slot (242) is provided in the lower sealing plate (241), and one end of the meshing plate (224) close to the slot (242) is engaged with the slot (242), and the other end surface of the meshing plate (224) is an inclined surface. A wedge block for contacting the inclined surface of the meshing plate (224) is correspondingly provided on the inner wall of the partition (2111), and the lower sealing plate (241) is connected to the inner wall of the partition (2111) via a second spring (243).

5. The collection equipment for plastic processing based on tailings recovery according to claim 4 is characterized in that: The air inlet cavity (2112) is provided with a one-way air valve near the pressing chamber to limit the one-way flow of air into the air inlet cavity (2112).

6. The collection equipment for plastic processing based on tailings recovery according to claim 5, characterized in that: The processing device (2) further comprises a mixing body (25), the mixing body (25) comprising a cross bar (251) and a plurality of mixing rods (252) arranged on the cross bar (251), the two ends of the cross bar (251) being slidably connected to the inner wall of the drying bin, the bottom of the lower sealing plate (241) being provided with a sleeve (244), the top of the cross bar (251) being provided with a push rod (253), the push rod (253) being plugged into and matched with the bottom of the sleeve (244).

7. A collection method using the collection device for plastic processing based on tailings recovery as described in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, after the plastic tailings are put into the containing body (21) through the hopper (1), the hydraulic press (221) drives the pressing plate (222) to press the plastic tailings; S2, the hydraulic press (221) drives the pressing plate (222) to reset, and drives the lower sealing plate (241) to move toward the hydraulic press (221), so that the bottom of the pressing bin is connected to the drying bin, and the plastic tailings enter the drying bin through the partition (2111); S3, under the continuous heating of the heating wire (214), water contained in the plastic tailings is separated from the plastic tailings in the form of water vapor; S4, the hydraulic press (221) drives the pressing plate (222) to push the gas in the pressing bin into the air inlet chamber (2112), and then passes through the air inlet chamber (2112) and the circulation chamber (2113), and finally is ejected from the exhaust port (2114), taking away the water vapor accumulated in the drying bin and passing through the pressing bin and the hopper (1) to be discharged to the outside, thereby completing the recovery and drying of the plastic tailings.

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