A separating device and method for metal inserts in a plastic container

Abstract

The present invention relates to the technical field of solid metal separation, and particularly relates to a separation device and method for metal inserts in plastic containers. It includes a separation unit, and the separation unit includes a separation cylinder. A driving component is arranged inside the separation cylinder. A plurality of groups of outer separation balls are distributed in an annular array at the top of the separation cylinder. An inner separation ball is arranged inside the outer separation ball, and the inner separation ball is in transmission connection with the driving component; a discharge pipe is arranged inside the inner separation ball, and the cavity of the discharge pipe is communicated with the cavity of the outer separation ball. By separating the moving metal and plastic scraps, the scraps will not stack on each other, and the separation is more thorough. Also, because the metal scraps are transported vertically upward, the plastic scraps will not be carried out under the action of gravity. This not only avoids the omission caused by the stacking of scraps on each other, but also avoids the doping of plastic scraps in the metal scraps, thus improving the separation effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of solid metal separation, and particularly relates to a separation device and method for metal inserts in plastic containers. Background Art

[0002] There are often many metal inserts in plastic containers. After the plastic containers are used, in order to reduce costs and improve utilization rates, it is necessary to crush the plastic containers into scraps, and then extract and utilize the metal scraps.

[0003] After retrieval, a patent document with the publication number CN118847670A, publication date of October 29, 2024, and titled "A Waste Metal Sorting Equipment" is cited. It includes a sorting frame; a feed inlet is opened at the top of the sorting frame; a plurality of collection hoppers are slidably fitted inside the sorting frame; the collection hoppers are arranged at positions corresponding to the bottom of the sorting frame; a blowing port is fixedly connected to the side wall of the sorting frame, and the blowing port is arranged at a position corresponding to the bottom of the feed inlet; the blowing port is arranged at a position corresponding to the top of the collection hopper; a support frame is fixedly connected to the side of the sorting frame; a first support foot is fixedly connected to the bottom of the support frame; a conveyor belt is installed inside the support frame, and the conveyor belt is arranged at a position corresponding to the feed inlet of the sorting frame; an outlet is opened on the side wall of the sorting frame. The above embodiment solves the problem that it is difficult to distinguish different materials during the sorting process due to the different types and materials of metals, and different metals are easily mixed together, which affects the recycling of metals.

[0004] However, the above embodiment still has the following defects:

[0005] When separating metal and non-metal scraps in the above embodiment, it is impossible to completely separate the adhered scraps, resulting in non-metal scraps being easily doped in the metal scraps, thereby reducing the separation effect. Summary of the Invention

[0006] In view of the above problems, the present invention provides a separation device for metal inserts in plastic containers, including a separation unit. The separation unit includes a separation cylinder. A driving component is arranged inside the separation cylinder. A plurality of groups of outer separation balls are distributed in a circular array at the top of the separation cylinder. An inner separation ball is arranged inside the outer separation ball. The inner separation ball is in transmission connection with the driving component; a discharge pipe is arranged inside the inner separation ball, and the cavity of the discharge pipe is communicated with the cavity of the outer separation ball;

[0007] A conveying rod is rotatably connected to the inner wall of the bottom of the discharge pipe. A spiral feeding groove is arranged on the conveying rod. The top of the conveying rod extends above the outer separation ball; a spiral feeding groove is arranged on the conveying rod, and a magnetic attraction rod is arranged inside the conveying rod;

[0008] The plastic containers are first coarsely and finely crushed, and then placed in an external separation ball. The inner separation ball rotates to further crush and separate the metal debris and plastic debris, and a lifting and conveying method is used to prevent the plastic debris from being taken out together.

[0009] Furthermore, the input end of the separation unit is connected to a fine crushing unit, the input end of the fine crushing unit is connected to a coarse crushing unit, the coarse crushing unit includes a coarse crushing box, a crushing roller is provided in the coarse crushing box, and a loading cover is provided above the coarse crushing box.

[0010] Furthermore, the feeding cover includes a cover body, a feeding port is provided on the top of the cover body, and the inner diameter of the feeding port is smaller than the inner diameter of the bottom opening of the cover body; and the side walls around the cover body are all provided with splash-proof arc surfaces.

[0011] Furthermore, the fine crushing unit includes a fine crushing cylinder, a feeding port is provided at the top edge of the fine crushing cylinder, and the feeding port is connected to the output end of the coarse crushing box through a hose; the bottom of the fine crushing cylinder is a conical structure, and a fine crushing discharge port is opened at the center; a spiral feed plate is installed at the center of the bottom of the fine crushing cylinder, the top cross-section of the spiral feed plate is a horizontal spiral, and the bottom of the spiral feed plate is completely in contact with the inner wall of the bottom of the fine crushing cylinder; the spiral feed plate and the inner wall of the bottom of the fine crushing cylinder are combined to form a spiral fine crushing channel.

[0012] Furthermore, a driving chamber is provided at the center of the top of the crushing cylinder, an electric push rod is installed in the driving chamber, the output end of the electric push rod extends into the crushing cylinder, and a lifting plate is installed at the bottom, a spiral crushing plate is installed at the bottom of the lifting plate, the top cross-section of the spiral crushing plate is horizontal spiral, and the spiral crushing plate is distributed along the path of the spiral crushing channel; the bottom of the spiral crushing plate is movably fitted with the bottom inner wall of the spiral crushing channel.

[0013] Furthermore, the driving component includes a first motor, which is installed at the center of the inner wall at the top of the separation cylinder. The bottom of the first motor is connected to a transmission gear. Several groups of first rotating rods are distributed in a circular array around the first motor, and the same number as the inner separation balls. A driven gear is provided at the bottom of the first rotating rod, and the driven gear is meshed with the transmission gear; the top of the first rotating rod extends into the outer separation ball and is installed at the bottom of the inner separation ball.

[0014] Furthermore, a metal collecting cylinder is provided at the center of the outer wall at the top of the separation cylinder, and a material introducing cylinder is provided on the top of the metal collecting cylinder; a number of groups of external separation balls with the same number as the first rotating rod are distributed in a circular array around the material introducing cylinder, and a second inclined tube is connected between the external separation balls and the material introducing cylinder.

[0015] Further, a number of first inclined tubes equal to the number of conveying rods are annularly arrayed around the metal collection cylinder. The other end of each first inclined tube extends obliquely to the rod body of the conveying rod above the discharge pipe, and a crescent-shaped scraper is provided at the port. The crescent-shaped scraper is slidably attached to the inner wall of the spiral feeding chute.

[0016] Further, the top of the conveying rod extends directly above the discharge pipe, and a helical gear is provided at the port. A bevel gear is meshed and connected to one side of the helical gear, and a second motor is drivingly connected to the input end of the bevel gear.

[0017] A separation method for a separation device of metal inserts in a plastic container, the separation method comprising:

[0018] Roughly crush and finely crush the plastic container successively to obtain semi-finished crushed residues;

[0019] Evenly distribute the semi-finished crushed residues into each group of outer separation balls;

[0020] Start the driving component, drive the inner separation ball to rotate through the driving component, and make the semi-finished crushed residues start to move, and stir and grind while moving, finally obtaining finished plastic crushed residues and metal crushed residues;

[0021] Control the rotation of each group of conveying rods and supply power to the magnetic attraction rod to generate electromagnetic attraction;

[0022] Under the action of the electromagnetic attraction, the metal crushed residues enter the discharge pipe and are adsorbed in the spiral feeding chute;

[0023] Drive the metal crushed residues adsorbed in the spiral feeding chute away from the feeding pipe by the rotation of the conveying rod.

[0024] The beneficial effects of the present invention are:

[0025] 1. After rough crushing and fine crushing, the obtained semi-finished crushed residues enter each group of outer separation balls respectively, and then control the simultaneous rotation of each group of inner separation balls, so that the semi-finished crushed residues move, and finally obtain finished plastic crushed residues and metal crushed residues. Then, the metal crushed residues are adsorbed in the spiral feeding chute by the electromagnetic attraction of the magnetic attraction rod, and are vertically separated upward by the rotation of the conveying rod. By separating the moving metal and plastic crushed residues, the crushed residues will not stack on each other, and the separation is more thorough. Also, because the metal crushed residues are transported vertically upward, the plastic crushed residues will not be carried out under the action of gravity, which not only avoids the omission caused by the stacking of crushed residues, but also avoids the doping of plastic crushed residues in the metal crushed residues, thus improving the separation effect.

[0026] 2. Since the bottom of the fine crushing cylinder is a conical structure, the plastic blocks will move uniformly along the horizontal spiral path of the spiral fine crushing channel towards the central fine crushing discharge port, avoiding dead corners and ensuring no residue inside the fine crushing cylinder. Meanwhile, the spiral fine crushing plate is controlled to reciprocate up and down to cut the plastic blocks and collide with the fine crushing bumps, thus realizing the function of secondary crushing while conveying the materials. Also, due to the horizontal spiral conveying and horizontal spiral cutting, the cutting dead corners and residues are avoided, so that while improving the secondary crushing effect, the smoothness of the fine crushing work is also enhanced.

[0027] 3. A number of groups of material guiding bumps are evenly distributed on the outer wall of the inner separation ball and the inner wall of the outer separation ball. Therefore, the semi-finished product slag in motion can be further crushed and ground, preventing the adhesion between metal slag and plastic slag. The material guiding bumps can also tumble and stir the semi-finished product slag, thus assisting in the separation work.

[0028] 4. When encountering special-shaped or large-volume plastic containers, the crushing roller cannot crush them immediately, and the plastic container is driven to bounce upward as the crushing roller rotates. Since the inner diameter of the feeding port is smaller than the inner diameter of the bottom opening of the cover body, and splash-proof arc surfaces are provided on the surrounding side walls of the cover body, the bounced plastic container will not fly out directly. Instead, it will fall again along the arc path after hitting the splash-proof arc surface, thus improving safety.

[0029] Other features and advantages of the present invention will be described in the following description of the specification, and some of them will be obvious from the description of the specification, or can be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification, claims and drawings. Brief Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 Shows a schematic structural diagram of the separation device according to an embodiment of the present invention.

[0032] Figure 2 Shows an exploded schematic diagram of the coarse crushing unit according to an embodiment of the present invention.

[0033] Figure 3 Shows a bottom view schematic diagram of the feeding cover according to an embodiment of the present invention.

[0034] Figure 4A schematic cross-sectional view of a fine crushing unit according to an embodiment of the present invention is shown.

[0035] Figure 5 FIG2 shows a schematic cross-sectional view of a fine crushing drum according to an embodiment of the present invention.

[0036] Figure 6 A bottom view schematically shows the separation of the spiral feeding plate and the spiral crushing plate according to an embodiment of the present invention.

[0037] Figure 7 A schematic structural diagram of a separation unit according to an embodiment of the present invention is shown.

[0038] Figure 8 A schematic cross-sectional view of a separation barrel according to an embodiment of the present invention is shown.

[0039] Figure 9 A schematic cross-sectional view of an outer separation ball and an inner separation ball according to an embodiment of the present invention is shown.

[0040] Figure 10 A schematic structural diagram of a conveying rod according to an embodiment of the present invention is shown.

[0041] Figure 11 FIG. 1 is a schematic cross-sectional view of a delivery rod according to an embodiment of the present invention.

[0042] Figure 12 A schematic diagram of the connection between the metal collecting cylinder, the first inclined tube and the crescent scraper according to an embodiment of the present invention is shown.

[0043] In the figure: 100, coarse crushing unit; 110, coarse crushing box; 120, crushing roller; 130, loading cover; 131, cover body; 132, loading port; 133, splash-proof arc surface; 140, coarse crushing discharge end; 200, fine crushing unit; 210, fine crushing cylinder; 211, fine crushing discharge port; 220, drive chamber; 221, electric push rod; 230, spiral feed plate; 240, lifting plate; 250, spiral fine crushing plate; 260, fine crushing protrusion; 300, conveying component; 400, separation unit; 410, separation cylinder; 411, first motor; 412, transmission gear ; 413, the first rotating rod; 414, the driven gear; 420, the metal collecting cylinder; 421, the first inclined tube; 422, the crescent scraper; 430, the guide tube; 431, the second inclined tube; 440, the outer separation ball; 441, the sealing bearing seat; 442, the material-discharging protrusion; 450, the inner separation ball; 451, the guide tube; 460, the discharge tube; 470, the conveying rod; 471, the spiral feeding trough; 472, the inner cavity of the rod; 480, the bevel gear; 481, the fixed tube; 482, the second motor; 490, the support plate; 491, the electromagnetic suction control component; 492, the magnetic rod. DETAILED DESCRIPTION

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0045] An embodiment of the present invention provides a separation device for metal inserts in a plastic container. Exemplarily, as Figure 1 shown, it includes a coarse crushing unit 100, and a fine crushing unit 200 is connected below the coarse crushing unit 100. The coarse crushing unit 100 and the fine crushing unit 200 are respectively used for primary and secondary crushing of the plastic container.

[0046] The output end of the fine crushing unit 200 is connected to a conveying component 300, and the conveying component 300 is, but not limited to, a screw conveyor.

[0047] The separation unit 400 is provided directly below the output end of the conveying component 300. The separation unit 400 is used to separate metal scraps and plastic scraps.

[0048] Exemplarily, as Figure 2 and Figure 3 shown, the coarse crushing unit 100 includes a coarse crushing box 110, a crushing roller 120 is arranged in the coarse crushing box 110, a feeding cover 130 is arranged directly above the coarse crushing box 110, and a coarse crushing discharge end 140 is arranged at the bottom of the coarse crushing box 110.

[0049] Exemplarily, the feeding cover 130 includes a cover body 131, a feeding port 132 is arranged at the top of the cover body 131, and the inner diameter of the feeding port 132 is smaller than the inner diameter of the bottom opening of the cover body 131. Anti-splash arc surfaces 133 are arranged on the peripheral side walls of the cover body 131. <00>

[0050] The plastic container is put into the coarse crushing box 110 through the feeding port 132 for preliminary crushing to obtain several groups of plastic blocks. When encountering a special-shaped or large-volume plastic container, the crushing roller 120 cannot crush it immediately, and the plastic container is driven to bounce upward as the crushing roller 120 rotates. Since the inner diameter of the feeding port 132 is smaller than the inner diameter of the bottom opening of the cover body 131, and the anti-splash arc surfaces 133 are arranged on the peripheral side walls of the cover body 131, the bounced plastic container will not fly out directly, but will fall again along its arc path after encountering the anti-splash arc surfaces 133, thereby improving safety.

[0051] Exemplarily, as Figure 4 、 Figure 5 and Figure 6As shown, the fine crushing unit 200 includes a fine crushing cylinder 210. At the top edge of the fine crushing cylinder 210, a feeding port is provided, and the feeding port is communicated with the coarse crushing discharging end 140 through a hose. The bottom of the fine crushing cylinder 210 is of a conical structure, and a fine crushing discharging port 211 is opened at the center. At the center of the bottom of the fine crushing cylinder 210, a spiral feeding plate 230 is installed. The top view cross-section of the spiral feeding plate 230 is horizontally spiral, and the bottom of the spiral feeding plate 230 is completely attached to the inner wall of the bottom of the fine crushing cylinder 210. The spiral feeding plate 230 and the inner wall of the bottom of the fine crushing cylinder 210 together form a spiral fine crushing channel.

[0052] Specifically, at the center of the top of the fine crushing cylinder 210, a driving chamber 220 is provided. An electric push rod 221 is installed in the driving chamber 220. The output end of the electric push rod 221 extends into the fine crushing cylinder 210, and a lifting plate 240 is installed at the bottom. A spiral fine crushing plate 250 is installed at the bottom of the lifting plate 240. The top view cross-section of the spiral fine crushing plate 250 is horizontally spiral, and the spiral fine crushing plate 250 is distributed along the path of the spiral fine crushing channel. The bottom of the spiral fine crushing plate 250 is movably attached to the inner wall of the bottom of the spiral fine crushing channel.

[0053] Specifically, a number of groups of fine crushing bumps 260 are evenly distributed on both the spiral fine crushing plate 250 and the spiral feeding plate 230. A vibration motor is provided at the bottom of the fine crushing cylinder 210.

[0054] After the coarse crushing work is completed, the obtained plastic blocks enter the fine crushing cylinder 210 through the hose. At this time, the vibration motor is started. Also, because the bottom of the fine crushing cylinder 210 is of a conical structure, the plastic blocks will move uniformly along the horizontally spiral path of the spiral fine crushing channel towards the fine crushing discharging port 211 at the center, avoiding dead corners and at the same time avoiding residues in the fine crushing cylinder 210. While the plastic blocks are being transported, the electric push rod 221 is used to drive the spiral fine crushing plate 250 to reciprocate up and down, cutting the plastic blocks in the spiral fine crushing channel evenly. The cut plastic blocks splash to both sides and collide and squeeze with the fine crushing bumps 260, thereby obtaining semi-finished crushed residues, and thus realizing the function of secondary crushing while transporting the materials. Also, because horizontal spiral transportation and horizontal spiral cutting avoid cutting dead corners and residues, while improving the secondary crushing effect, the smoothness of the fine crushing work is also improved.

[0055] Exemplarily, such as Figure 7 、 Figure 8 and Figure 9As shown, the separation unit 400 includes a separation cylinder 410. A driving component is provided inside the separation cylinder 410. The driving component includes a first motor 411. The first motor 411 is installed at the center of the inner wall of the top of the separation cylinder 410. A transmission gear 412 is connected to the bottom of the first motor 411 in a transmission manner. A number of groups of first rotating rods 413 are distributed in a circular array around the first motor 411. A driven gear 414 is provided at the bottom of the first rotating rod 413. The driven gear 414 is engaged with the transmission gear 412.

[0056] Exemplarily, a metal collection cylinder 420 is provided at the center of the outer wall of the top of the separation cylinder 410. A material guiding cylinder 430 is provided at the top of the metal collection cylinder 420. A number of groups of outer separation balls 440 equal in number to the first rotating rods 413 are distributed in a circular array around the material guiding cylinder 430. A second inclined pipe 431 is connected between the outer separation ball 440 and the material guiding cylinder 430.

[0057] Exemplarily, an inner separation ball 450 is provided at the center of the cavity of the outer separation ball 440. The top of the first rotating rod 413 extends into the outer separation ball 440 and is installed at the bottom of the inner separation ball 450. A sealed bearing seat 441 is provided at the joint of the first rotating rod 413 and the outer separation ball 440. A number of groups of material guiding bumps 442 are evenly distributed on both the outer wall of the inner separation ball 450 and the inner wall of the outer separation ball 440. A discharge pipe 460 is installed on the inner wall of the bottom of the inner separation ball 450. The top of the discharge pipe 460 extends directly above the outer separation ball 440. A number of groups of material guiding pipes 451 are connected between the discharge pipe 460 and the cavity of the outer separation ball 440. The number of groups of the material guiding pipes 451 are distributed in a radial pattern.

[0058] Exemplarily, a conveying rod 470 is rotatably connected to the inner wall of the bottom of the discharge pipe 460. The top of the conveying rod 470 extends directly above the discharge pipe 460, and a helical gear 480 is provided at the port. A bevel gear is engaged with one side of the helical gear 480. A second motor 482 is connected to the input end of the bevel gear in a transmission manner. A fixed pipe 481 is rotatably connected to the top of the helical gear 480. A support plate 490 is installed at the top of the fixed pipe 481. An electromagnetic suction control component 491 is provided at the top of the support plate 490.

[0059] Exemplarily, as Figure 10 and Figure 11 shown, a spiral feeding groove 471 is formed on the outer wall of the conveying rod 470. The spiral feeding groove 471 is of a spiral structure. An insulating layer is provided on other parts of the outer wall of the conveying rod 470 except the spiral feeding groove 471. A rod inner cavity 472 is provided on the central axis of the conveying rod 470. A magnetic attraction rod 492 is provided in the rod inner cavity 472. The input end of the magnetic attraction rod 492 is electrically connected to the electromagnetic suction control component 491.

[0060] Exemplarily, as Figure 12 shown, around the metal collection cylinder 420, a number of groups of first inclined tubes 421 equal to the number of conveying rods 470 are distributed in an annular array. The other end of the first inclined tube 421 extends obliquely to one end of the rod body of the conveying rod 470 above the discharge pipe 460, and a crescent-shaped scraping plate 422 is provided at the port. The crescent-shaped scraping plate 422 is slidably fitted to the inner wall of the spiral feeding chute 471.

[0061] The semi-finished crushed slag after fine crushing is conveyed into the material guiding cylinder 430 through the conveying component 300, and then evenly distributed into each group of outer separation balls 440 by the second inclined tube 431. At this time, the driving component is started. Through the meshing connection of the transmission gear 412 and each group of driven gears 414, each group of first rotating rods 413 can drive their respective corresponding group of inner separation balls 450 to rotate simultaneously, and the semi-finished crushed slag in the outer separation balls 440 can be moved by using the material pushing bumps 442. At the same time, because a number of groups of material pushing bumps 442 are evenly distributed on the outer wall of the inner separation balls 450 and the inner wall of the outer separation balls 440, the semi-finished crushed slag in motion will be further crushed and ground, avoiding the adhesion of metal crushed slag and plastic crushed slag, so as to obtain finished metal crushed slag and plastic crushed slag.

[0062] While obtaining the finished metal crushed slag and plastic crushed slag, the second motor 482 and the electromagnetic suction control component 491 are started. The second motor 482 drives the helical gear 480 and the conveying rod 470 to rotate, and the electromagnetic suction control component 491 supplies power to the magnetic attraction rod 492 to generate electromagnetic suction. The metal crushed slag enters the discharge pipe 460 from the cavity of the outer separation ball 440 through the material guiding pipe 451 and is all adsorbed in the spiral feeding chute 471, and then is transported to above the discharge pipe 460 through the spiral feeding chute 471. Then, the metal crushed slag is scraped off by the crescent-shaped scraping plate 422 and finally enters the metal collection cylinder 420.

[0063] The above embodiments have the following beneficial effects:

[0064] 1. After rough crushing and fine crushing, the obtained semi-finished crushed slag enters each group of outer separation balls 440 respectively, and then each group of inner separation balls 450 is controlled to rotate simultaneously, so that the semi-finished crushed slag moves, and finally finished plastic crushed slag and metal crushed slag are obtained. Then, the metal crushed slag is adsorbed in the spiral feeding chute 471 by the electromagnetic suction of the magnetic attraction rod 492 and is vertically separated upward by the rotation of the conveying rod 470. By separating the moving metal and plastic crushed slag, the crushed slag will not stack on each other, and the separation is more thorough. Also, because the metal crushed slag is transported vertically upward, the plastic crushed slag will not be carried out under the action of gravity. This not only avoids the omission caused by the stacking of crushed slag, but also avoids the doping of plastic crushed slag in the metal crushed slag, thus improving the separation effect.

[0065] 2. Since the bottom of the fine crushing cylinder 210 is a conical structure, the plastic blocks will move uniformly along the horizontal spiral path of the spiral fine crushing channel towards the central fine crushing discharge port 211, avoiding dead corners and residues inside the fine crushing cylinder 210. At the same time, the spiral fine crushing plate 250 is controlled to reciprocate up and down to cut the plastic blocks and collide with the fine crushing bumps 260, so as to realize the function of secondary crushing while conveying the materials. Also, because horizontal spiral conveying and horizontal spiral cutting avoid cutting dead corners and residues, the secondary crushing effect is improved while the smoothness of the fine crushing work is enhanced.

[0066] 3. A number of groups of material guiding bumps 442 are evenly distributed on the outer wall of the inner separation ball 450 and the inner wall of the outer separation ball 440. Therefore, the semi-finished product slag in motion can be further crushed and ground, preventing the adhesion between metal slag and plastic slag. The material guiding bumps 442 can also tumble and stir the semi-finished product slag, thus playing an auxiliary role in the separation work.

[0067] 4. When encountering special-shaped or large-volume plastic containers, the crushing roller 120 cannot crush them immediately, and the plastic container is driven to bounce upward as the crushing roller 120 rotates. Since the inner diameter of the feeding port 132 is smaller than the inner diameter of the bottom opening of the cover body 131, and splash-proof arc surfaces 133 are provided on the peripheral side walls of the cover body 131, the bounced plastic container will not fly out directly. Instead, it will fall again along its arc path after hitting the splash-proof arc surface 133, thus improving safety.

[0068] Based on the above separation device for metal inserts in a plastic container, an embodiment of the present invention further proposes a separation method for the separation device. Exemplarily, the separation method includes:

[0069] Put the plastic container into the coarse crushing box for coarse crushing treatment, and obtain several groups of plastic blocks after completion;

[0070] Put the plastic blocks into the fine crushing box through a hose;

[0071] Start the vibration motor to make the plastic blocks move uniformly along the horizontal spiral path of the spiral fine crushing channel towards the central fine crushing discharge port;

[0072] Start the electric push rod, and use the electric push rod to drive the spiral fine crushing plate to reciprocate up and down, and cut the plastic blocks being conveyed through the bottom of the spiral fine crushing plate;

[0073] The cut plastic blocks splash to both sides and collide and squeeze with the fine crushing bumps. After repeated cutting and repeated collision and extrusion, they are discharged through the fine crushing discharge port to obtain semi-finished product slag;

[0074] The semi-finished product scraps enter the material guiding cylinder through the conveying component, and then are evenly distributed into each group of outer separation balls by the material guiding cylinder;

[0075] Start the driving component, drive the inner separation ball to rotate through the driving component, and make the semi-finished product scraps start to move, and stir and grind while moving, and finally obtain finished plastic scraps and metal scraps;

[0076] Start each group of second motors to drive the corresponding group of conveying rods to rotate, and supply power to the magnetic attraction rod to generate electromagnetic attraction;

[0077] Under the action of the electromagnetic attraction, the metal scraps enter the discharge pipe through each group of material guiding pipes and are adsorbed in the spiral feeding trough;

[0078] The metal scraps adsorbed in the spiral feeding trough are taken away from the feeding pipe by the rotation of the conveying rod;

[0079] Utilize the sliding fit of the crescent scraper and the spiral feeding trough to scrape off the metal scraps and convey them into the metal collection box for centralized collection.

[0080] Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A separation device for metal inserts in a plastic container, comprising a separation unit (400), characterized in that: The separation unit (400) includes a separation cylinder (410), wherein a driving component is provided in the separation cylinder (410), and a plurality of groups of outer separation balls (440) are distributed in an annular array on the top of the separation cylinder (410), wherein an inner separation ball (450) is provided in the outer separation ball (440), and the inner separation ball (450) is in transmission connection with the driving component; a discharge pipe (460) is provided in the inner separation ball (450), and the cavity of the discharge pipe (460) is in communication with the cavity of the outer separation ball (440); a conveying rod (470) is rotatably connected to the inner wall of the bottom of the discharge pipe (460), and a spiral feeding trough (471) is provided on the conveying rod (470), and the top of the conveying rod (470) extends to the top of the outer separation ball (440); a spiral feeding trough (471) is provided on the conveying rod (470), and a magnetic rod (492) is provided in the conveying rod (470); The plastic container is first subjected to coarse and fine crushing, and then placed in an outer separation ball (440), where the metal debris and the plastic debris are further crushed and separated by the rotation of the inner separation ball (450), and the plastic debris is prevented from being carried out together by a lifting and conveying method; the input end of the separation unit (400) is connected to a fine crushing unit (200), and the fine crushing unit (200) includes a fine crushing cylinder (210), and a spiral feed plate (230) is installed at the center of the bottom of the fine crushing cylinder (210), the top view cross section of the spiral feed plate (230) is horizontal spiral, and the bottom of the spiral feed plate (230) is completely in contact with the inner wall of the bottom of the fine crushing cylinder (210); the spiral feed plate (230) and the inner wall of the bottom of the fine crushing cylinder (210) are combined to form a spiral fine crushing channel; A driving chamber (220) is provided at the center of the top of the fine crushing cylinder (210), an electric push rod (221) is installed in the driving chamber (220), the output end of the electric push rod (221) extends into the fine crushing cylinder (210), and a lifting plate (240) is installed at the bottom, and a spiral fine crushing plate (250) is installed at the bottom of the lifting plate (240), the top cross-section of the spiral fine crushing plate (250) is horizontally spiral, and the spiral fine crushing plate (250) is distributed along the path of the spiral fine crushing channel; the bottom of the spiral fine crushing plate (250) is movably fitted with the bottom inner wall of the spiral fine crushing channel; a plurality of groups of fine crushing protrusions (260) are evenly distributed on the spiral fine crushing plate (250) and the spiral feeding plate (230); a plurality of groups of material-diverting protrusions (442) are evenly distributed on the outer wall of the inner separation ball (450) and the inner wall of the outer separation ball (440).

2. The separating device for metal inserts in a plastic container according to claim 1, wherein: The input end of the fine crushing unit (200) is connected to a coarse crushing unit (100), and the coarse crushing unit (100) comprises a coarse crushing box (110), a crushing roller (120) is provided in the coarse crushing box (110), and a loading cover (130) is provided above the coarse crushing box (110).

3. The device for separating metal inserts in plastic containers according to claim 2, characterized in that: The feeding cover (130) includes a cover body (131). A feeding port (132) is provided at the top of the cover body (131), and the inner diameter of the feeding port (132) is smaller than the inner diameter of the bottom opening of the cover body (131); splash-proof arc surfaces (133) are provided on the peripheral side walls of the cover body (131).

4. The separating device for metal inserts in a plastic container according to claim 2, characterized in that: An inlet is provided at the top edge of the fine crushing cylinder (210), and the inlet is communicated with the output end of the coarse crushing box (110) through a hose; the bottom of the fine crushing cylinder (210) is of a conical structure, and a fine crushing discharge port (211) is opened at the center.

5. The device for separating metal inserts in plastic containers according to claim 1, characterized in that: The driving component includes a first motor (411). The first motor (411) is installed at the center of the inner wall of the top of the separation cylinder (410). A transmission gear (412) is connected to the bottom of the first motor (411) in a transmission manner. A plurality of groups of first rotating rods (413) with the same number as the outer separation balls (440) are distributed in a circular array around the first motor (411). A driven gear (414) is provided at the bottom of the first rotating rod (413), and the driven gear (414) is meshed and linked with the transmission gear (412); the top of the first rotating rod (413) extends into the outer separation ball (440) and is installed at the bottom of the inner separation ball (450).

6. The separating device for metal inserts in a plastic container according to claim 5, characterized in that: A metal collection cylinder (420) is provided at the center of the outer wall of the top of the separation cylinder (410). A material guiding cylinder (430) is provided at the top of the metal collection cylinder (420); a plurality of groups of outer separation balls (440) with the same number as the first rotating rods (413) are distributed in a circular array around the material guiding cylinder (430). A second inclined pipe (431) is communicated between the outer separation ball (440) and the material guiding cylinder (430).

7. The separating device for metal inserts in a plastic container according to claim 6, characterized in that: A plurality of groups of first inclined pipes (421) with the same number as the conveying rods (470) are distributed in a circular array around the metal collection cylinder (420). The other end of the first inclined pipe (421) extends obliquely to the rod body of the conveying rod (470) above the discharge pipe (460), and a crescent-shaped scraper (422) is provided at the port. The crescent-shaped scraper (422) is slidably attached to the inner wall of the spiral feeding groove (471).

8. The separating device for metal inserts in a plastic container according to claim 1, characterized in that: The top of the conveying rod (470) extends directly above the discharge pipe (460), and a bevel gear (480) is provided at the port. A bevel gear is meshed and connected to one side of the bevel gear (480), and a second motor (482) is connected to the input end of the bevel gear in a transmission manner.

9. A separation method for a separation device of a metal insert in a plastic container according to any one of claims 1-8, characterized in that: The separation method includes: successively performing coarse crushing and fine crushing on the plastic container to obtain semi-finished crushed residues; evenly distributing the semi-finished crushed residues into each group of outer separation balls; starting the driving component, driving the inner separation ball to rotate through the driving component, and making the semi-finished crushed residues start to move, and stirring and grinding are performed during the movement to finally obtain finished plastic crushed residues and metal crushed residues; controlling the rotation of each group of conveying rods and supplying power to the magnetic attraction rod to generate electromagnetic attraction; under the action of the electromagnetic attraction, the metal crushed residues enter the discharge pipe and are adsorbed in the spiral feeding groove; the metal crushed residues adsorbed in the spiral feeding groove are taken away from the discharge pipe by the rotation of the conveying rod.

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