Separating device and method for metal insert in plastic container

Abstract

The invention relates to the technical field of solid metal separation, in particular to a separation device and method for a metal insert in a plastic container. Comprising a separation unit, the separation unit comprises a separation cylinder, a driving part is arranged in the separation cylinder, a plurality of groups of outer separation balls are distributed at the top of the separation cylinder in an annular array, inner separation balls are arranged in the outer separation balls, and the inner separation balls are in transmission connection with the driving part; a discharging pipe is arranged in the inner separation ball, and a cavity of the discharging pipe is communicated with a cavity of the outer separation ball. Metal and plastic disintegrating slag in movement are separated, so that the disintegrating slag cannot be mutually stacked and is separated more thoroughly, and the metal disintegrating slag is vertically and upwards transported, so that the plastic disintegrating slag cannot be brought out under the action of gravity, omission caused by mutual stacking of the disintegrating slag is avoided, meanwhile, the situation that the metal disintegrating slag is doped with the plastic disintegrating slag is avoided, and the service life of the plastic disintegrating slag is prolonged. Therefore, the separation effect is improved.

Description

Technical Field

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

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

[0003] After searching, the patent document with the publication number of CN118847670A and the publication date of October 29, 2024, entitled "A kind of scrap metal sorting equipment", includes a sorting frame; a feed port is provided on the top of the sorting frame; a plurality of collecting buckets are slidably matched inside the sorting frame; the collecting bucket is arranged at the position 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 the position corresponding to the bottom of the feed port; the blowing port is arranged at the position corresponding to the top of the collecting bucket; a support frame is fixedly connected to the side of the sorting frame; a first supporting 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 the position corresponding to the feed port of the sorting frame; a discharge port is provided on the side wall of the sorting frame. The above embodiment solves the problem that due to the different types and materials of metals, it is difficult to distinguish different materials during the sorting process, and different metals are easily mixed together, which affects the recycling of metals.

[0004] However, the above embodiment still has the following defects: When separating metal and non-metal slags in the above embodiment, it is not possible to completely separate the slags that are adhered to each other, which results in that the metal slags are easily mixed with non-metal slags, thereby reducing the separation effect. Summary of the invention

[0005] In view of the above problems, the present invention provides a separation device for metal inserts in a plastic container, comprising a separation unit, wherein the separation unit comprises a separation cylinder, a driving component is arranged in the separation cylinder, a plurality of groups of outer separation balls are distributed in an annular array on the top of the separation cylinder, an inner separation ball is arranged in the outer separation ball, and the inner separation ball is transmission-connected to the driving component; a discharge pipe is arranged in the inner separation ball, and the cavity of the discharge pipe is connected to the cavity of the outer separation ball; A conveying rod is rotatably connected to the inner wall of the bottom of the discharge pipe, and a spiral feeding trough is arranged on the conveying rod. The top of the conveying rod extends to the top of the outer separation ball. A spiral feeding trough is arranged on the conveying rod, and a magnetic rod is arranged inside the conveying rod. The plastic containers are firstly crushed coarsely and finely, and then placed in the outer separation ball. The inner separation ball rotates to further crush and separate the metal debris and plastic debris, and the lifting and conveying method is used to prevent the plastic debris from being taken out together.

[0006] Furthermore, the input end of the separation unit is connected with a fine crushing unit, the input end of the fine crushing unit is connected with a coarse crushing unit, the coarse crushing unit comprises a coarse crushing box, a crushing roller is arranged in the coarse crushing box, and a loading cover is arranged above the coarse crushing box.

[0007] Furthermore, the feeding cover comprises a cover body, a feeding port is provided at the top of the cover body, 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 provided with splash-proof arc surfaces.

[0008] 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 with 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 view 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.

[0009] Furthermore, a driving chamber is provided at the center of the top of the fine crushing cylinder, an electric push rod is installed in the driving chamber, the output end of the electric push rod extends into the fine crushing cylinder, and a lifting plate is installed at the bottom, a spiral fine crushing plate is installed at the bottom of the lifting plate, the top view cross-section of the spiral fine crushing plate is horizontal spiral, and the spiral fine crushing plate is distributed along the path of the spiral fine crushing channel; the bottom of the spiral fine crushing plate is movably fitted with the bottom inner wall of the spiral fine crushing channel.

[0010] 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. A number of groups of first rotating rods are distributed in a circular array around the first motor, 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 and linked 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.

[0011] 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, 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.

[0012] Furthermore, a plurality of groups of first inclined tubes are distributed in a circular array around the metal collecting cylinder, the same number as the conveying rod. The other end of the first inclined tube extends obliquely to the rod body of the conveying rod above the discharge pipe, and a crescent scraper is provided at the port, which slides in contact with the inner wall of the spiral feed trough.

[0013] Furthermore, the top of the conveying rod extends to just above the discharge pipe, and a helical gear is provided at the port, one side of the helical gear is meshingly connected with a bevel gear, and the input end of the bevel gear is transmission-connected with a second motor.

[0014] A separation method of a separation device for a metal insert in a plastic container, the separation method comprising: The plastic container is subjected to coarse crushing and fine crushing in turn to obtain semi-finished product slag; Distribute the semi-finished product slag evenly into the separation balls outside each group; The driving component is started to drive the inner separation ball to rotate, and the semi-finished product slag starts to move, and is stirred and ground during the movement, and finally the finished plastic slag and metal slag are obtained; Control the rotation of each group of conveying rods and supply power to the magnetic rods to generate electromagnetic suction; Under the action of electromagnetic suction, the metal debris enters the discharge pipe and is adsorbed in the spiral trough; The metal debris adsorbed in the spiral feeding trough is taken away from the feeding pipe by the rotation of the conveying rod.

[0015] The beneficial effects of the present invention are: 1. After coarse and fine crushing, the semi-finished slag is respectively put into each group of outer separation balls, and then the separation balls in each group are controlled to rotate at the same time, so that the semi-finished slag moves, and finally the finished plastic slag and metal slag are obtained. Then the metal slag is adsorbed in the spiral feeding trough by the electromagnetic suction of the magnetic rod, and is separated vertically upward by the rotation of the conveying rod. By separating the moving metal and plastic slag, the slag will not be stacked on each other, and the separation is more thorough. Because the metal slag is transported vertically upward, the plastic slag will not be taken out under the action of gravity, which not only avoids the omission caused by the stacking of slag, but also avoids the mixing of plastic slag in the metal slag, thereby improving the separation effect.

[0016] 2. Because 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 to the fine crushing discharge port in the center, avoiding dead corners and residues in the fine crushing cylinder. At the same time, the spiral fine crushing plate is controlled to reciprocate up and down to cut the plastic blocks and collide with the fine crushing protrusions, so as to achieve the function of secondary crushing while conveying materials. Because the horizontal spiral conveying and horizontal spiral cutting avoid the occurrence of cutting dead corners and residues, the secondary crushing effect is improved while the fluency of the fine crushing work is improved.

[0017] 3. There are several groups of material-shifting protrusions evenly distributed on the outer wall of the inner separation ball and the inner wall of the outer separation ball, so that the semi-finished product debris in motion can be further crushed and ground to prevent the metal debris and plastic debris from sticking to each other. The semi-finished product debris can also be tumbled and stirred by the material-shifting protrusions, thereby assisting the separation work.

[0018] 4. When encountering a special-shaped or large-volume plastic container, the crushing roller cannot crush it immediately, and the plastic container bounces upward as the crushing roller rotates. Since the inner diameter of the feed port is smaller than the inner diameter of the bottom opening of the cover body, and the side walls of the cover body are all provided with splash-proof arc surfaces, the bounced plastic container will not fly out directly, but will fall back along its arc path after encountering the splash-proof arc surface, thereby improving safety.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic structural diagram of a separation device according to an embodiment of the present invention is shown.

[0022] Figure 2 A schematic diagram of an exploded view of a coarse crushing unit according to an embodiment of the present invention is shown.

[0023] Figure 3 A bottom view of a loading cover according to an embodiment of the present invention is shown.

[0024] Figure 4A cross-sectional schematic diagram of a fine crushing unit according to an embodiment of the present invention is shown.

[0025] Figure 5 A schematic cross-sectional view of a fine crushing cylinder according to an embodiment of the present invention is shown.

[0026] Figure 6 A schematic bottom view of the separation of the spiral feeding plate and the spiral crushing plate according to an embodiment of the present invention is shown.

[0027] Figure 7 A schematic structural diagram of a separation unit according to an embodiment of the present invention is shown.

[0028] Figure 8 A schematic cross-sectional view of a separation barrel according to an embodiment of the present invention is shown.

[0029] Fig. 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.

[0030] Fig.10 A schematic structural diagram of a conveying rod according to an embodiment of the present invention is shown.

[0031] Fig.11 A cross-sectional schematic diagram of a delivery rod according to an embodiment of the present invention is shown.

[0032] Fig.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.

[0033] 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, driving chamber; 221, electric push rod; 230, spiral feeding 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 removal 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 body; 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 suction rod. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0035] The embodiment of the present invention provides a device for separating metal inserts in a plastic container, for example, Figure 1 As shown, it comprises 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 used for primary and secondary crushing of plastic containers, respectively.

[0036] 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.

[0037] A separation unit 400 is disposed directly below the output end of the conveying member 300. The separation unit 400 is used to separate metal debris and plastic debris.

[0038] For example, Figure 2 and Figure 3 As shown, the coarse crushing unit 100 includes a coarse crushing box 110 , a crushing roller 120 is disposed in the coarse crushing box 110 , a loading cover 130 is disposed just above the coarse crushing box 110 , and a coarse crushing unloading terminal 140 is disposed at the bottom of the coarse crushing box 110 .

[0039] Exemplarily, the loading cover 130 includes a cover body 131, a loading port 132 is provided at the top of the cover body 131, and the inner diameter of the loading port 132 is smaller than the inner diameter of the bottom opening of the cover body 131. The side walls of the cover body 131 are all provided with splash-proof arc surfaces 133.

[0040] The plastic container is put into the coarse crushing box 110 through the feeding port 132 for preliminary crushing to obtain a plurality of 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 side walls of the cover body 131 are all provided with splash-proof arc surfaces 133, the bounced plastic container will not fly out directly, but will fall again along the arc path after encountering the splash-proof arc surface 133, thereby improving safety.

[0041] For example, Figure 4 , Figure 5 and Figure 6As shown, the fine crushing unit 200 includes a fine crushing cylinder 210, and a feed inlet is provided at the top edge of the fine crushing cylinder 210, and the feed inlet is connected to the coarse crushing discharge end 140 through a hose. The bottom of the fine crushing cylinder 210 is a conical structure, and a fine crushing discharge inlet 211 is opened at the center. A spiral feed plate 230 is installed at the center of the bottom of the fine crushing cylinder 210, and the top view of the spiral feed plate 230 is a horizontal spiral, and the bottom of the spiral feed plate 230 is completely in contact with the bottom inner wall of the fine crushing cylinder 210. The spiral feed plate 230 and the bottom inner wall of the fine crushing cylinder 210 form a spiral fine crushing channel.

[0042] Specifically, a driving chamber 220 is provided at the center of the top of the fine crushing cylinder 210, and 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 horizontal 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.

[0043] Specifically, 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 vibration motor is provided at the bottom of the fine crushing cylinder 210.

[0044] After the coarse crushing is completed, the obtained plastic blocks enter the fine crushing cylinder 210 through the hose. At this time, the vibration motor is started. Because 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 to the fine crushing discharge port 211 at the center, avoiding dead corners and 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, and the plastic blocks in the spiral fine crushing channel are cut at a uniform speed. The cut plastic blocks splash to both sides and collide and squeeze with the fine crushing protrusions 260, thereby obtaining semi-finished product slag, and thereby realizing the function of secondary crushing while transporting materials. Because the horizontal spiral conveying and horizontal spiral cutting avoid the occurrence of cutting dead corners and residues, while improving the secondary crushing effect, the smoothness of the fine crushing work is also improved.

[0045] For example, Figure 7 , Figure 8 and Fig. 9As shown, the separation unit 400 includes a separation cylinder 410, and a driving component is provided in the separation cylinder 410. The driving component includes a first motor 411, and the first motor 411 is installed at the center of the top inner wall of the separation cylinder 410. The bottom of the first motor 411 is connected to a transmission gear 412. A plurality 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, and the driven gear 414 is meshed and linked with the transmission gear 412.

[0046] Exemplarily, a metal collecting cylinder 420 is provided at the center of the top outer wall of the separation cylinder 410, and a material introducing cylinder 430 is provided at the top of the metal collecting cylinder 420. A plurality of groups of outer separation balls 440 having the same number as the first rotating rod 413 are distributed in a circular array around the material introducing cylinder 430, and a second inclined tube 431 is connected between the outer separation balls 440 and the material introducing cylinder 430.

[0047] Exemplarily, an inner separation ball 450 is provided at the center of the cavity of the outer separation ball 440, and 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 sealing bearing seat 441 is provided at the junction of the first rotating rod 413 and the outer separation ball 440, and 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. A discharge pipe 460 is installed on the inner wall of the bottom of the inner separation ball 450, and the top of the discharge pipe 460 extends to the top of the outer separation ball 440. A plurality of groups of guide pipes 451 are connected between the discharge pipe 460 and the cavity of the outer separation ball 440, and the plurality of groups of guide pipes 451 are radially distributed.

[0048] Exemplarily, a conveying rod 470 is rotatably connected to the inner wall of the bottom of the discharge pipe 460, and the top of the conveying rod 470 extends to the top of the discharge pipe 460, and a helical gear 480 is provided at the port, and a bevel gear is meshed and connected to one side of the helical gear 480, and a second motor 482 is connected to the input end of the bevel gear. A fixed pipe 481 is rotatably connected to the top of the fixed pipe 481, and a support plate 490 is installed on the top of the support plate 490, and an electromagnetic suction control component 491 is provided on the top of the support plate 490.

[0049] For example, Fig.10 and Fig.11 As shown, a spiral feeding groove 471 is provided on the outer wall of the conveying rod 470, and the spiral feeding groove 471 is a spiral structure. The outer wall of the conveying rod 470, except for the spiral feeding groove 471, is provided with an insulating layer. A rod inner cavity 472 is provided on the central axis of the conveying rod 470, and a magnetic attraction rod 492 is provided in the rod inner cavity 472, and the input end of the magnetic attraction rod 492 is electrically connected to the electromagnetic attraction control component 491.

[0050] For example, Fig.12 As shown, the metal collecting cylinder 420 is surrounded by a circular array with a number of first inclined tubes 421, the same number as the conveying rod 470. The other end of the first inclined tube 421 extends obliquely to the rod body of the conveying rod 470 above the discharge pipe 460, and a crescent scraper 422 is provided at the port, and the crescent scraper 422 is slidably fitted with the inner wall of the spiral feeding trough 471.

[0051] The crushed semi-finished product debris is conveyed to the guide tube 430 through the conveying component 300, and then evenly distributed to each group of outer separation balls 440 by the second inclined tube 431. At this time, the driving component is started, and the transmission gear 412 and each group of driven gears 414 are meshed and connected, so that each group of first rotating rods 413 can drive their corresponding group of inner separation balls 450 to rotate at the same time, and the semi-finished product debris in the outer separation balls 440 can be moved by using the material-pickup protrusions 442. At the same time, because a number of groups of material-pickup 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, the moving semi-finished product debris will be further crushed and ground to avoid the metal debris and the plastic debris from sticking to each other, thereby obtaining finished metal debris and plastic debris.

[0052] While obtaining the finished metal slag and plastic slag, the second motor 482 and the electromagnetic suction control component 491 are started, the helical gear 480 and the conveying rod 470 are driven to rotate by the second motor 482, and the electromagnetic suction control component 491 is used to power the magnetic suction rod 492 to generate electromagnetic suction. The metal slag is allowed to enter the discharge pipe 460 from the cavity of the outer separation ball 440 through the guide pipe 451, and is completely adsorbed in the spiral feeding trough 471, and then transported to the top of the discharge pipe 460 through the spiral feeding trough 471, and then the metal slag is scraped off by the crescent scraper 422, and finally enters the metal collection cylinder 420.

[0053] The above embodiments have the following beneficial effects: 1. After coarse and fine crushing, the semi-finished slag is respectively put into each group of outer separation balls 440, and then the separation balls 450 in each group are controlled to rotate simultaneously, so that the semi-finished slag moves, and finally the finished plastic slag and metal slag are obtained. Then, the metal slag is adsorbed in the spiral feeding trough 471 by the electromagnetic suction force of the magnetic rod 492, and is separated vertically upward by the rotation of the conveying rod 470. By separating the moving metal and plastic slag, the slag will not be stacked on each other, and the separation is more thorough. Because the metal slag is transported vertically upward, the plastic slag will not be taken out under the action of gravity, which not only avoids the omission caused by the stacking of slag, but also avoids the mixing of plastic slag in the metal slag, thereby improving the separation effect.

[0054] 2. Because 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 toward the fine crushing discharge port 211 at the center, avoiding dead angles and residues in 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 protrusions 260, so as to realize the function of secondary crushing while conveying the materials. Because the horizontal spiral conveying and horizontal spiral cutting avoid the occurrence of cutting dead angles and residues, the secondary crushing effect is improved while the smoothness of the fine crushing work is improved.

[0055] 3. Several groups of material-shifting 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, so that the semi-finished product debris in motion can be further crushed and ground to prevent the metal debris and the plastic debris from sticking to each other. The semi-finished product debris can also be tumbled and stirred by the material-shifting protrusions 442, thereby assisting the separation work.

[0056] 4. When encountering a special-shaped or large-volume plastic container, the crushing roller 120 cannot crush it immediately, and the plastic container bounces 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 side walls of the cover body 131 are all provided with splash-proof arc surfaces 133, the plastic container that bounces up will not fly out directly, but will fall back along the arc path after encountering the splash-proof arc surface 133, thereby improving safety.

[0057] Based on the above-mentioned device for separating metal inserts in a plastic container, an embodiment of the present invention further provides a separation method of the separation device. Exemplarily, the separation method includes: Put the plastic container into a coarse crushing box for coarse crushing, and obtain a number of groups of plastic blocks after completion; Put the plastic pieces into the crushing box through the hose; Start the vibration motor to make the plastic blocks move uniformly along the horizontal spiral path of the spiral crushing channel toward the crushing discharge port in the center; Start the electric push rod, and use it to drive the spiral crushing plate to reciprocate up and down, so as to cut the plastic blocks being transported through the bottom of the spiral crushing plate; The cut plastic blocks splash to both sides and collide and squeeze with the fine crushing protrusions. After repeated cutting and repeated collision and squeezing, they are discharged through the fine crushing discharge port to obtain semi-finished product slag; The semi-finished product slag enters the feeding tube through the conveying component, and is evenly distributed to the separation balls outside each group by the feeding tube; The driving component is started to drive the inner separation ball to rotate, and the semi-finished product slag starts to move, and is stirred and ground during the movement, and finally the finished plastic slag and metal slag are obtained; The second motors of each group are started to drive the corresponding group of conveying rods to rotate, and power is supplied to the magnetic rods to generate electromagnetic suction force; Under the action of electromagnetic suction, the metal slag enters the discharge pipe through each group of feed pipes and is adsorbed in the spiral feed trough; The conveying rod rotates to take the metal debris adsorbed in the spiral feeding trough away from the feeding pipe; The metal scraps are scraped off by the sliding fit between the crescent scraper and the spiral chute, and then transported to the metal collection box for centralized collection.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions 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 device for separating a metal insert in a plastic container, comprising a separation unit (400), characterized in that: The separation unit (400) comprises a separation cylinder (410), a driving component is arranged inside the separation cylinder (410), a plurality of groups of outer separation balls (440) are arranged in a ring array on the top of the separation cylinder (410), inner separation balls (450) are arranged inside the outer separation balls (440), and the inner separation balls (450) are drivingly connected to the driving component; a discharge pipe (460) is arranged inside the inner separation ball (450), and the cavity of the discharge pipe (460) is connected to the cavity of the outer separation ball (440); A conveying rod (470) is rotatably connected to the inner wall at the bottom of the discharge pipe (460), and a spiral material trough (471) is provided on the conveying rod (470). The top of the conveying rod (470) extends to directly above the outer separation ball (440); the conveying rod (470) is provided with a spiral material trough (471), and a magnetic attraction rod (492) is provided inside the conveying rod (470); The plastic container is firstly subjected to coarse and fine crushing, and then placed in an outer separation ball (440). The inner separation ball (450) is rotated to further crush and separate the metal debris and the plastic debris, and a lifting and conveying method is used to prevent the plastic debris from being taken out together.

2. A device for separating metal inserts in a plastic container according to claim 1, characterized in that: The input end of the separation unit (400) is connected to a fine crushing unit (200), and the input end of the fine crushing unit (200) is connected to a coarse crushing unit (100). 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. A device for separating metal inserts in a plastic container according to claim 2, characterized in that: The loading cover (130) comprises a cover body (131), a loading port (132) is provided at the top of the cover body (131), the inner diameter of the loading port (132) is smaller than the inner diameter of the bottom opening of the cover body (131); and the side walls around the cover body (131) are all provided with splash-proof arc surfaces (133).

4. A device for separating metal inserts in a plastic container according to claim 2, characterized in that: The fine crushing unit (200) comprises a fine crushing cylinder (210), wherein a material inlet is provided at the top edge of the fine crushing cylinder (210), and the material inlet is connected to the output end of the coarse crushing box (110) through a hose; the bottom of the fine crushing cylinder (210) is a conical structure, and a fine crushing discharge port (211) is provided at the center; 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 a 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.

5. A device for separating metal inserts in a plastic container according to claim 4, characterized in that: 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, 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 horizontal 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.

6. The device for separating metal inserts in a plastic container according to claim 1, characterized in that: The driving component comprises a first motor (411), the first motor (411) being mounted at the center of the inner wall at the top of the separation cylinder (410), the bottom of the first motor (411) being connected to a transmission gear (412), a plurality of groups of first rotating rods (413) being the same in number as the inner separation balls (440) being arranged in a circular array around the first motor (411), a driven gear (414) being provided at the bottom of the first rotating rod (413), the driven gear (414) being meshed and linked with the transmission gear (412); the top of the first rotating rod (413) extending into the outer separation ball (440) and being mounted at the bottom of the inner separation ball (450).

7. A device for separating metal inserts in a plastic container according to claim 6, characterized in that: A metal collecting cylinder (420) is provided at the center of the outer wall at the top of the separation cylinder (410), and a material introducing cylinder (430) is provided at the top of the metal collecting cylinder (420); a plurality of groups of external separation balls (440) having the same number as the first rotating rod (413) are distributed in a circular array around the material introducing cylinder (430), and a second inclined tube (431) is connected between the external separation balls (440) and the material introducing cylinder (430).

8. A device for separating metal inserts in a plastic container according to claim 7, characterized in that: A plurality of groups of first inclined tubes (421) having the same number as the conveying rod (470) are distributed in a circular array around the metal collecting cylinder (420); the other end of the first inclined tube (421) extends obliquely to the rod body of the conveying rod (470) located above the discharge pipe (460); and a crescent scraper (422) is provided at the end thereof; the crescent scraper (422) is slidably fitted to the inner wall of the spiral feeding trough (471).

9. The device for separating metal inserts in a plastic container according to claim 1, characterized in that: The top of the conveying rod (470) extends to the top of the discharge pipe (460), and a helical gear (480) is provided at the end thereof. One side of the helical gear (480) is meshingly connected to a bevel gear, and the input end of the bevel gear is transmission-connected to a second motor (482).

10. A separation method for a separation device for a metal insert in a plastic container according to any one of claims 1 to 9, characterized in that: The separation method comprises: The plastic container is subjected to coarse crushing and fine crushing in turn to obtain semi-finished product slag; Distribute the semi-finished product slag evenly into the separation balls outside each group; The driving component is started to drive the inner separation ball to rotate, and the semi-finished product slag starts to move, and is stirred and ground during the movement, and finally the finished plastic slag and metal slag are obtained; Control the rotation of each group of conveying rods and supply power to the magnetic rods to generate electromagnetic suction; Under the action of electromagnetic suction, the metal debris enters the discharge pipe and is adsorbed in the spiral trough; The metal debris adsorbed in the spiral feeding trough is taken away from the feeding pipe by the rotation of the conveying rod.

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