Double-screw extrusion feeding device for crushed plastic recycling bin

Abstract

The utility model discloses a double-screw extrusion feeding device for a broken plastic recycling bin, which relates to the technical field of plastic recycling and comprises a waste plastic feeding bin, one side of the top end of the waste plastic feeding bin is fixedly connected with a servo motor, and a sleeve is arranged in the middle of the inside of the waste plastic feeding bin. The upper end of the curved-surface outer wall of the sleeve is connected with the output end of the servo motor through a belt. Waste plastic can be effectively and evenly distributed in the waste plastic feeding bin through the stirring blades, then the hydraulic jack is started, the waste plastic is pressed and broken in an up-down arch mode through up-down movement of the grating, the bridging phenomenon in the waste plastic feeding bin is prevented, and the situation that feeding cannot be conducted in the conveying bin is avoided. Meanwhile, three groups of spiral blades are arranged to extrude fed materials to form a material seal, so that the phenomenon of waste gas leakage is effectively prevented, conveyed waste materials enter the inferior waste plastic first-stage reaction device through a discharge hole to be processed, and carbon monoxide generated by processing is discharged from a cracked gas outlet through a discharge bin.

Description

Technical Field

[0001] This utility model relates to the field of plastic recycling technology, specifically a twin-screw extrusion feeding device for a crushed plastic recycling bin. Background Technology

[0002] Plastic products are widely used due to their advantages of light weight, stable properties, and low cost. However, this also results in the generation of a large amount of waste plastics. Currently, the main methods for disposing of waste plastics are landfill and recycling. Since waste plastics are mainly hydrocarbon polymers, the methods for recycling and utilizing waste plastics mainly include two types: material recovery and energy recovery. Material recovery includes physical recovery (melting and regranulation, solvent separation, and solid-phase processing) and chemical recovery.

[0003] In existing waste plastic recycling bins, a large number of small particles accumulate in the bin during continuous waste material transportation. Due to the large size and irregular shape of the particles, when there is a lot of filler, the friction between the particles and with the hopper wall will increase, which can easily lead to bridging. This prevents the screw conveyor in the middle of the bin from feeding material, thus making it impossible to complete the subsequent hot melting process. To address this, a double-screw extrusion feeding device for waste plastic recycling bins is proposed. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a twin-screw extrusion feeding device for a shredded plastic recycling bin, so as to solve the technical problems mentioned in the background above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-spiral extrusion feeding device for a waste plastic recycling bin, comprising a waste plastic feeding bin, a sleeve centrally located inside the waste plastic feeding bin, a rotating rod slidably connected inside the sleeve, a vertical shaft slidably connected inside the rotating rod, and a stirring blade fixed near the lower end of the outer wall of the rotating rod, a hydraulic jack installed at the top of the vertical shaft, a support base fixedly connected to the bottom end of the outer wall of the hydraulic jack, the sleeve rotatably connected inside the support base, a grid welded to the bottom end of the vertical shaft, a conveying bin at the bottom end of the waste plastic feeding bin, multiple sets of rotating shafts rotatably arranged inside the conveying bin, a spiral blade fixed to the outer wall of each set of rotating shafts, a rotary motor connected to the rotating shafts at the end of the conveying bin, a discharge bin sleeved at the end of the conveying bin away from the waste plastic feeding bin, a pyrolysis gas outlet provided on the outer wall of the discharge bin, and a discharge port reserved inside the discharge bin at the bottom end of the conveying bin.

[0006] As a preferred technical solution of the double-screw extrusion feeding device for recycling plastic waste bins according to this utility model, sliding blocks are welded to the outer walls on both sides of the rotating rod, and the inner wall of the sleeve is provided with a groove that matches the sliding blocks.

[0007] As a preferred technical solution of the double-spiral extrusion feeding device for a waste plastic recycling bin according to this utility model, the bottom of the grid is conical, and the outer wall of the grid curved surface is in a non-contact state with the inner wall of the waste plastic feeding bin.

[0008] As a preferred technical solution of the double spiral extrusion feeding device for a crushed plastic recycling bin according to this utility model, four sets of reinforcing ribs are connected to the top edge of the grid, and the ends of the four sets of reinforcing ribs are welded with round shafts, which are fixedly sleeved on the outer wall of the vertical shaft.

[0009] As a preferred technical solution of the double-screw extrusion feeding device for a waste plastic recycling bin according to this utility model, a servo motor is installed on the outer wall of the waste plastic feeding bin near the top position, and a belt is driven between the outer wall of the sleeve curved surface and the output end of the servo motor. A notch is reserved at the contact position between the support base and the belt for transmission.

[0010] As a preferred technical solution of the double-screw extrusion feeding device for a waste plastic recycling bin according to this utility model, the support base is fixed to the top of the waste plastic feeding bin, and the top of the support base is reserved with a feeding port for feeding.

[0011] In summary, the present invention has the following main advantages:

[0012] 1. This utility model effectively distributes waste plastics evenly in the waste plastic feed hopper through the stirring blades. Then, the hydraulic jack is activated, and the waste plastics are compressed and arched by the up and down movement of the grid, preventing bridging inside the waste plastic feed hopper and avoiding the inability to feed material into the conveying hopper. At the same time, three sets of spiral blades are set to compress the feed and form a material seal, effectively preventing the leakage of waste gas. The conveyed waste material enters the inferior waste plastic primary reaction device through the discharge port for processing, and the carbon monoxide produced during processing is discharged from the pyrolysis gas outlet through the emission chamber.

[0013] 2. This utility model improves the efficiency of the grid by making the bottom of the grid conical to facilitate better pressing and arching of the grid, and by making its interior concave to facilitate the better removal of some waste plastic from the grid during pressing. The addition of reinforcing ribs can enhance the service life of the grid and prevent uneven stress that may occur when the grid is pressing and arching the waste plastic for a long time, which could lead to breakage at the connection between the grid and the vertical shaft over time. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the internal components of the present invention.

[0015] Figure 2 This is a three-dimensional schematic diagram of the grille of this utility model;

[0016] Figure 3 This is a schematic diagram of the inside of the sleeve of this utility model.

[0017] In the diagram: 100, waste plastic feed hopper; 110, servo motor; 111, belt; 120, sleeve; 121, rotating rod; 122, stirring blade; 123, sliding block; 124, chute; 130, vertical shaft; 131, grid; 132, reinforcing rib; 133, round shaft; 140, hydraulic jack; 141, support base; 150, conveying hopper; 151, discharge port; 160, spiral blade; 161, rotating shaft; 170, rotary motor; 180, discharge hopper; 181, pyrolysis gas outlet. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure.

[0020] A twin-screw extrusion feeding device for a plastic waste recycling silo, such as Figure 1-3 As shown, the device includes a waste plastic feed hopper 100, with a sleeve 120 centrally located inside. A rotating rod 121 is slidably connected inside the sleeve 120, and a vertical shaft 130 is slidably connected inside the rotating rod 121. A stirring blade 122 is fixed to the lower end of the outer wall of the rotating rod 121. A hydraulic jack 140 is installed at the top of the vertical shaft 130, and a support base 141 is fixedly connected to the bottom end of the outer wall of the hydraulic jack 140. The sleeve 120 is rotatably connected to the inside of the support base 141. A grid 13 is welded to the bottom end of the vertical shaft 130. 1. The bottom of the waste plastic feeding hopper 100 is provided with a conveying hopper 150. Multiple sets of rotating shafts 161 are rotatably installed inside the conveying hopper 150. Each set of rotating shafts 161 has a spiral blade 160 fixed on its outer wall. The end of the conveying hopper 150 is equipped with a rotary motor 170 that is connected to the rotating shaft 161. The end of the conveying hopper 150 away from the waste plastic feeding hopper 100 is connected to a discharge hopper 180. The outer wall of the discharge hopper 180 is provided with a pyrolysis gas outlet 181. The bottom of the conveying hopper 150 is located inside the discharge hopper 180 and a discharge port 151 is reserved.

[0021] By continuously adding waste plastic into the waste plastic feed hopper 100, the servo motor 110 drives the belt 111 to rotate, which in turn drives the sleeve 120 to rotate. The sleeve 120, under sliding action, drives the rotating rod 121 and the stirring blade 122 to rotate synchronously. The stirring blade 122 effectively and evenly distributes the waste plastic within the waste plastic feed hopper 100. Then, the hydraulic jack 140 is activated, causing the vertical shaft 130 to descend. This vertical shaft 130 then drives the grid 131 to descend synchronously. The up-and-down movement of the grid 131 compresses and arches the waste plastic, preventing further feeding. A bridging phenomenon occurs inside the silo 100 to prevent material from being blocked from entering the conveying silo 150. Subsequently, the plastic inside the waste plastic feeding silo 100 will enter the conveying silo 150. Then, the rotary motor 170 is started to drive the rotating shaft 161 and the spiral blade 160 to rotate, thereby achieving the purpose of conveying waste materials. At the same time, three sets of spiral blades 160 are set to compress the feed to form a material seal, effectively preventing the leakage of waste gas. The conveyed waste materials enter the inferior waste plastic primary reaction device through the discharge port 151 for processing, and the carbon monoxide produced by processing will be discharged from the pyrolysis gas outlet 181 through the emission silo 180.

[0022] Please refer to this carefully. Figure 3 The outer walls of the rotating rod 121 are welded with sliding blocks 123, and the inner wall of the sleeve 120 is provided with a groove 124 that matches the sliding blocks 123.

[0023] Through the cooperation of the sliding block 123 and the slide groove 124, the sleeve 120 can drive the rotating rod 121 and the stirring blade 122 to rotate synchronously through the sliding block 123 when rotating.

[0024] Please refer to this carefully. Figures 1 to 3 The bottom of the grid 131 is conical, and the curved outer wall of the grid 131 is in a non-contact state with the inner wall of the waste plastic feed bin 100. Four sets of reinforcing ribs 132 are connected to the top edge of the grid 131, and the ends of the four sets of reinforcing ribs 132 are welded with round shafts 133, which are fixedly sleeved on the outer wall of the vertical shaft 130.

[0025] By making the bottom of the grid 131 conical, it is easier for the grid 131 to be pressed down and compacted and arched. The interior is made concave so that some waste plastic can fall out of the grid 131 better when it is pressed down. By setting the reinforcing ribs 132, the service life of the grid 131 can be better enhanced. It can also prevent uneven stress that may occur when the grid 131 is pressing and arching the waste plastic for a long time, which may lead to breakage at the connection between the grid 131 and the vertical shaft 130 over time.

[0026] Please refer to this carefully. Figure 2 and Figure 3A servo motor 110 is installed on the outer wall of the waste plastic feeding bin 100 near the top. A belt 111 drives the curved outer wall of the sleeve 120 to the output end of the servo motor 110. A notch is reserved at the contact position between the support base 141 and the belt 111 for transmission. The support base 141 is fixed to the top of the waste plastic feeding bin 100. A feed port for feeding is reserved at the top of the support base 141.

[0027] The servo motor 110 drives the sleeve 120 to rotate, so that the rotating rod 121 and the stirring blade 122 can better distribute the plastic evenly inside the waste plastic feed bin 100.

[0028] In use, waste plastic is continuously added to the waste plastic feed hopper 100. The servo motor 110 is activated to rotate the stirring blades 122, which effectively distribute the waste plastic evenly within the feed hopper 100. Then, the hydraulic jack 140 is activated, causing the vertical shaft 130 to descend. This vertical shaft 130 then moves the grid 131 down synchronously. The up-and-down movement of the grid 131 compresses and arches the waste plastic, preventing bridging within the feed hopper 100 and ensuring that the feed hopper 150 can continue to feed. The plastic inside the 0 will enter the feeding hopper 150, and then the rotary motor 170 will be started to drive the rotating shaft 161 and the spiral blade 160 to rotate, thereby achieving the purpose of conveying waste. At the same time, three sets of spiral blades 160 are set to squeeze the feed to form a material seal, effectively preventing the leakage of waste gas. The conveyed waste enters the inferior waste plastic primary reaction device through the discharge port 151 for processing. The carbon monoxide produced during processing will be discharged from the cracked gas outlet 181 through the emission chamber 180. The parts of this device not involved are the same as or can be implemented using existing technology.

[0029] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A twin-screw extrusion feeding device for a waste plastic recycling bin, comprising a waste plastic feeding bin (100), characterized in that: A sleeve (120) is centrally located inside the waste plastic feed hopper (100). A rotating rod (121) is slidably connected inside the sleeve (120). A vertical shaft (130) is slidably connected inside the rotating rod (121). An agitator (122) is fixed to the outer wall of the rotating rod (121) near its lower end. A hydraulic jack (140) is installed at the top of the vertical shaft (130). A support base (141) is fixedly connected to the bottom of the outer wall of the hydraulic jack (140). The sleeve (120) is rotatably connected inside the support base (141). A grid (131) is welded to the bottom of the vertical shaft (130). The waste plastic feed hopper... The bottom of the silo (100) is provided with a conveying silo (150). Multiple sets of rotating shafts (161) are rotatably arranged inside the conveying silo (150). Each set of rotating shafts (161) has a spiral blade (160) fixed on its outer wall. The end of the conveying silo (150) is equipped with a rotary motor (170) that is connected to the rotating shaft (161). The end of the conveying silo (150) away from the waste plastic feed silo (100) is connected to a discharge silo (180). The outer wall of the discharge silo (180) is provided with a pyrolysis gas outlet (181). The bottom of the conveying silo (150) is located inside the discharge silo (180) and a discharge port (151) is reserved.

2. The twin-screw extrusion feeding device for a plastic waste recycling silo according to claim 1, characterized in that: The outer walls of the rotating rod (121) are welded with sliding blocks (123), and the inner wall of the sleeve (120) is provided with a groove (124) that matches the sliding block (123).

3. The twin-screw extrusion feeding device for a plastic waste recycling silo according to claim 1, characterized in that: The bottom of the grid (131) is conical, and the outer wall of the curved surface of the grid (131) is in a non-contact state with the inner wall of the waste plastic feed bin (100).

4. The twin-screw extrusion feeding device for a plastic waste recycling silo according to claim 1, characterized in that: The top edge of the grid (131) is connected to four sets of reinforcing ribs (132), and the ends of the four sets of reinforcing ribs (132) are welded with round shafts (133), which are fixedly sleeved on the outer wall of the vertical shaft (130).

5. A twin-screw extrusion feeding device for a plastic waste recycling silo according to claim 1, characterized in that: A servo motor (110) is installed near the top of the outer wall of the waste plastic feed hopper (100). A belt (111) drives the outer wall of the sleeve (120) and the output end of the servo motor (110). A notch is reserved at the contact position between the support seat (141) and the belt (111) for transmission.

6. A twin-screw extrusion feeding device for a plastic waste recycling silo according to claim 1, characterized in that: The support base (141) is fixed to the top of the waste plastic feed hopper (100), and the top of the support base (141) is reserved with a feed port for feeding.

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