Waste metal recycling and screening device

Abstract

The utility model relates to the field of waste metal recycling, in particular to a waste metal recycling and screening device which comprises a conveying belt used for conveying waste materials, a mounting frame arranged on the conveying belt and a plurality of magnetic attraction parts erected on the mounting frame, and the magnetic attraction force of the multiple magnetic attraction parts is gradually increased in the conveying direction of the conveying belt. Receiving hoppers are arranged beside the conveying belt and correspond to the magnetic attraction pieces, and a feeding device used for feeding scrap metal attracted by the magnetic attraction pieces into the receiving hoppers is further arranged on the mounting frame. The device has the advantage that the screening efficiency of the same kind of scrap metal is improved.

Description

Technical Field

[0001] The present application relates to the field of scrap metal recycling, and in particular to a scrap metal recycling screening device. Background Art

[0002] Scrap metal recycling aims to extract and recover valuable metal resources from discarded metal items. This process usually includes steps such as collection, sorting, processing and reuse to reduce the demand for limited metal resources while reducing environmental pollution.

[0003] A conventional magnetic separation and screening machine generally comprises a conveyor for conveying waste materials, on which a plurality of magnets for magnetically adsorbing waste metals are mounted.

[0004] The magnetic strengths of the multiple magnets on the above-mentioned conveyor are usually equal. Therefore, after the same type of scrap metal is initially screened out from the waste materials, it is still necessary to manually screen it again according to different sizes, resulting in low screening efficiency. Utility Model Content

[0005] In order to improve the problem of low screening efficiency of the same type of scrap metals, the present application provides a scrap metal recovery and screening device.

[0006] The scrap metal recovery and screening device provided in this application adopts the following technical solution:

[0007] A scrap metal recovery and screening device comprises a conveyor belt for conveying scrap materials, a mounting frame arranged on the conveyor belt, and a plurality of magnetic suction members mounted on the mounting frame, wherein the magnetic suction force of the plurality of magnetic suction members gradually increases along the conveying direction of the conveyor belt, a receiving hopper is arranged next to the conveyor belt relative to each magnetic suction member, and a feeding device is also arranged on the mounting frame for feeding the scrap metal adsorbed by the magnetic suction members into the receiving hopper.

[0008] By adopting the above technical solution, the conveyor belt can transport the waste materials, and the waste materials pass under each magnetic suction part in turn. Since the magnetic suction force of each magnetic part gradually increases along the conveying direction of the conveyor belt, the size of the waste metal adsorbed by each magnetic part also gradually increases along the conveying direction of the conveyor belt, thereby realizing classified recycling of different sizes of the same kind of waste metal, and workers do not need to perform secondary screening later, which greatly improves the screening efficiency.

[0009] Optionally, the magnetic attraction piece slides with the conveyor belt along its width direction, and the feeding device includes a cylinder bolted to the mounting frame and electrically connected to the control system, and the piston rod of the cylinder is parallel to the width direction of the conveyor belt and connected to the magnetic attraction piece.

[0010] By adopting the above technical solution, when the magnetic suction piece absorbs a sufficient amount of scrap metal, the worker starts the cylinder through the control system, and the piston rod of the cylinder is extended and retracted, thereby driving the magnetic suction piece to the top of the receiving hopper, after which the scrap metal on the magnetic suction piece can fall into the corresponding receiving hopper.

[0011] Optionally, the magnetic attraction component includes an electromagnet electrically connected to a control system.

[0012] By adopting the above technical solution, when the electromagnet is powered on, it generates magnetic attraction to absorb the scrap metal. When the electromagnet moves to the top of the receiving hopper, the control system cuts off the power to the electromagnet, the magnetic attraction of the electromagnet disappears, and the scrap metal on the electromagnet automatically falls into the receiving hopper.

[0013] Optionally, a proximity switch electrically connected to a control system is arranged at the top opening of the receiving hopper, and the force-bearing end of the proximity switch faces the electromagnet.

[0014] By adopting the above technical solution, when the cylinder drives the electromagnet to move to the force-bearing end that contacts the proximity switch, the proximity switch cuts off the power to the electromagnet through the control system. This process does not require manual intervention by workers and has a high degree of automation.

[0015] Optionally, the magnetic element extends to above the receiving hopper, and the feeding device includes an extension plate arranged on the magnetic element and located above the receiving hopper. The tops of the magnetic element and the extension plate are both rotatably mounted with cloth winding rollers, and non-woven fabric is wound between the two cloth winding rollers. The non-woven fabric passes around from under the magnetic element and the extension plate. A motor electrically connected to the control system is also arranged on the mounting frame, and the motor is driven by the two cloth winding rollers through a synchronous belt and a synchronous wheel.

[0016] By adopting the above technical solution, workers start the motor through the control system. The output shaft of the motor drives the two cloth-winding rollers to rotate synchronously and in the same direction through the synchronous wheel and the synchronous belt. The cloth-winding roller on the extension plate reels the non-woven fabric, while the cloth-winding roller on the magnetic element unwinds the non-woven fabric. In this way, the non-woven fabric can drive the scrap metal adsorbed on the bottom of the magnetic element to the extension plate. Since the extension plate is not magnetic, the scrap metal driven to the extension plate automatically falls into the receiving hopper.

[0017] Optionally, chamfers are arranged on the magnetic attraction member and the extension plate at the edges around which the non-woven fabric is wrapped.

[0018] By adopting the above technical solution, the chamfer protects the non-woven fabric and reduces the possibility of the non-woven fabric being worn by the edges.

[0019] Optionally, a plurality of convex strips are arranged at intervals along the length direction of the non-woven fabric, and the convex strips are parallel to the width direction of the non-woven fabric.

[0020] By adopting the above technical solution, the convex strips have an obstructive effect on the scrap metal, and can drive the scrap metal from the magnetic attraction piece to the extension plate, thereby improving the separation effect of the scrap metal and the magnetic attraction piece.

[0021] Optionally, a turns sensor electrically connected to a control system is arranged on the mounting frame, and a movable end of the turns sensor is pressed against an outer circumferential wall of any cloth winding roller.

[0022] By adopting the above technical solution, the revolution sensor can detect the number of revolutions of the corresponding cloth winding roller in real time, and thus monitor the reeling and unreeling length of the non-woven fabric.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The conveyor belt conveys the waste, which passes under each magnetic suction piece in turn. As the magnetic suction force of each magnetic piece gradually increases along the conveying direction of the conveyor belt, the size of the waste metal adsorbed by each magnetic piece also gradually increases along the conveying direction of the conveyor belt, thereby realizing classified recycling of the same type of waste metal of different sizes. Workers do not need to conduct secondary screening later, which greatly improves the screening efficiency;

[0025] 2. When the magnetic element absorbs enough scrap metal, the worker starts the cylinder through the control system, and the piston rod of the cylinder is extended and retracted, so that the magnetic element can be driven to the top of the receiving hopper, and then the scrap metal on the magnetic element can fall into the corresponding receiving hopper;

[0026] 3. The worker starts the motor through the control system. The output shaft of the motor drives the two cloth rollers to rotate synchronously and in the same direction through the synchronous wheel and the synchronous belt. The cloth roller on the extension plate reels the non-woven fabric, while the cloth roller on the magnetic suction part unwinds the non-woven fabric. In this way, the non-woven fabric can drive the scrap metal adsorbed on the bottom of the magnetic suction part to the extension plate. Since the extension plate is not magnetic, the scrap metal driven to the extension plate automatically falls into the receiving hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of Example 1 of the present application.

[0028] Figure 2 It is a structural diagram of Example 2 of the present application.

[0029] Figure 3 It is a schematic diagram of the positional relationship between the motor, the turns sensor and the extension plate in Example 2 of the present application.

[0030] Explanation of the reference numerals: 1. conveyor belt; 2. mounting frame; 3. magnetic suction part; 4. receiving hopper; 5. cylinder; 6. proximity switch; 7. extension plate; 8. cloth winding roller; 9. non-woven fabric; 10. motor; 11. chamfer; 12. convex strip; 13. number of turns sensor. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses a scrap metal recovery and screening device.

[0033] Example 1

[0034] Reference Figure 1 The scrap metal recovery and screening device includes a conveyor belt 1 for conveying scraps, a mounting frame 2 bolted to the conveyor belt 1, a plurality of magnetic suction members 3 are mounted on the mounting frame 2, and the plurality of magnetic suction members 3 are arranged at intervals along the conveying direction of the conveyor belt 1 and the magnetic suction force gradually increases.

[0035] Reference Figure 1 A funnel-shaped receiving hopper 4 is bolted to each magnetic suction component 3 beside the conveyor belt 1, and a feeding device is also arranged on the mounting frame 2, which is used to send the scrap metal adsorbed by the magnetic suction component 3 to the corresponding receiving hopper 4.

[0036] Reference Figure 1 The magnetic attraction member 3 is an electromagnet in the prior art, and the electromagnet slides with the conveyor belt 1 along the width direction thereof. When the electromagnet is powered on, the electromagnet generates a magnetic attraction force and adsorbs the scrap metal on the conveyor belt 1. When the electromagnet is powered off, the magnetic attraction force of the electromagnet disappears, and the adsorbed scrap metal falls off automatically.

[0037] The feeding device comprises a cylinder 5 bolted to the mounting frame 2 and electrically connected to the control system. The piston rod of the cylinder 5 is parallel to the width direction of the conveyor belt 1 and is threadedly connected to the electromagnet.

[0038] Reference Figure 1 When the electromagnet absorbs a sufficient amount of scrap metal, the control system starts the cylinder 5, and the piston rod of the cylinder 5 retracts, thereby driving the electromagnet to move from above the conveyor belt 1 to above the receiving hopper 4, and then the electromagnet is powered off, and the scrap metal absorbed by the electromagnet falls into the corresponding receiving hopper 4.

[0039] Afterwards, the piston rod of the cylinder 5 is extended again, thereby driving the electromagnet to move back from above the receiving hopper 4 to above the conveyor belt 1, and the electromagnet is energized again.

[0040] Reference Figure 1 The top opening of the receiving hopper 4 is threadedly connected with a proximity switch 6 electrically connected to the control system, and the force-bearing end of the proximity switch 6 faces the electromagnet. When the electromagnet moves to the active end of the contact proximity switch 6, the control system cuts off the power to the electromagnet, without manual intervention, and has a high degree of automation.

[0041] The implementation principle of Example 1 is: the conveyor belt 1 conveys the waste materials. When the waste metal passes under the electromagnet, it will be adsorbed by the corresponding electromagnet. Since the magnetic attraction force of each electromagnet is different, each electromagnet can adsorb waste metal of different sizes.

[0042] When the electromagnet absorbs a sufficient amount of scrap metal, the control system starts the cylinder 5, and the piston rod of the cylinder 5 retracts, thereby driving the electromagnet to move from above the conveyor belt 1 to above the receiving hopper 4, and then the electromagnet is powered off, and the scrap metal absorbed by the electromagnet falls into the corresponding receiving hopper 4.

[0043] Afterwards, the piston rod of the cylinder 5 is extended again, thereby driving the electromagnet to move back from above the receiving hopper 4 to above the conveyor belt 1, and the electromagnet is energized to resume the adsorption work.

[0044] Example 2

[0045] Reference Figure 2 and Figure 3 The difference between this embodiment and the embodiment is that the magnetic attraction member 3 extends to the top of the receiving hopper 4, and the magnetic attraction member 3 in this embodiment can directly adopt a magnet.

[0046] The feeding device includes an extension plate 7 bolted to the magnetic member 3 and located above the receiving hopper 4, and the extension plate 7 is made of plastic. The tops of the magnetic member 3 and the extension plate 7 are both rotatably mounted with cloth rolling rollers 8 parallel to each other, and non-woven fabric 9 is wound between the two cloth rolling rollers 8, and the non-woven fabric 9 passes under the magnetic member 3 and the extension plate 7.

[0047] The mounting frame 2 is also bolted with a motor 10 electrically connected to the control system. The motor 10 is a forward and reverse motor 10 in the prior art. The output shaft of the motor 10 is transmitted to the two cloth winding rollers 8 through a synchronous wheel and a synchronous belt.

[0048] Reference Figure 2 and Figure 3 The worker starts the motor 10 through the control system. The output shaft of the motor 10 drives the two cloth-winding rollers 8 to rotate synchronously and in the same direction through the synchronous wheel and the synchronous belt. The cloth-winding roller 8 on the extension plate 7 reels the non-woven fabric 9, while the cloth-winding roller 8 on the magnetic suction part 3 unwinds the non-woven fabric 9.

[0049] The non-woven fabric 9 can drive the scrap metal adsorbed by the bottom of the magnetic attraction member 3 to the extension plate 7 . Since the extension plate 7 is not magnetic, the scrap metal driven to the extension plate 7 automatically falls into the receiving hopper 4 .

[0050] Reference Figure 2 and Figure 3 The magnetic element 3 and the extension plate 7 are both provided with arc-shaped chamfers 11 at the edges around the non-woven fabric 9. The chamfers 11 protect the non-woven fabric 9 and reduce the possibility of the non-woven fabric 9 being worn by the edges.

[0051] Reference Figure 2 and Figure 3 A plurality of ridges 12 are bonded to the non-woven fabric 9 at intervals along its length direction. The ridges 12 are parallel to the width direction of the non-woven fabric 9. The ridges 12 hinder the scrap metal, ensuring that under the action of the non-woven fabric 9, the ridges 12 can drive the scrap metal to the extension plate 7, thereby improving the separation effect of the scrap metal and the magnetic suction component 3.

[0052] Reference Figure 2 and Figure 3 A turn sensor 13 electrically connected to the control system is bolted to the mounting frame 2 , and the movable end of the turn sensor 13 is pressed against the circumferential outer wall of any cloth winding roller 8 .

[0053] The revolution sensor 13 can detect the revolution of the corresponding cloth-winding roller 8 in real time, and then monitor the reeling and unwinding length of the non-woven fabric 9, ensuring that the non-woven fabric 9 on the cloth-winding roller 8 at the top of the magnetic element 3 is rewound in the reverse direction in time when it is about to be completely released.

[0054] The implementation principle of Example 2 is: the worker starts the motor 10 through the control system, and the output shaft of the motor 10 drives the two cloth-winding rollers 8 to rotate synchronously and in the same direction through the synchronous wheel and the synchronous belt. The cloth-winding roller 8 on the extension plate 7 reels the non-woven fabric 9, and the cloth-winding roller 8 on the magnetic suction part 3 unwinds the non-woven fabric 9.

[0055] The non-woven fabric 9 cooperates with the convex strips 12 to move the scrap metal adsorbed by the bottom of the magnetic element 3 to the extension plate 7 . Since the extension plate 7 is not magnetic, the scrap metal driven to the extension plate 7 automatically falls into the receiving hopper 4 .

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A scrap metal recovery and screening device, characterized in that: The invention comprises a conveyor belt (1) for conveying waste materials, a mounting frame (2) arranged on the conveyor belt (1), and a plurality of magnetic suction members (3) mounted on the mounting frame (2), wherein the magnetic suction force of the plurality of magnetic suction members (3) gradually increases along the conveying direction of the conveyor belt (1), a receiving hopper (4) is arranged next to the conveyor belt (1) relative to each magnetic suction member (3), and a feeding device for feeding the waste metal adsorbed by the magnetic suction member (3) into the receiving hopper (4) is also arranged on the mounting frame (2).

2. The scrap metal recovery and screening device according to claim 1, characterized in that: The magnetic attraction member (3) is slidably matched with the conveyor belt (1) along its width direction, and the feeding device includes a cylinder (5) bolted to the mounting frame (2) and electrically connected to the control system, and the piston rod of the cylinder (5) is parallel to the width direction of the conveyor belt (1) and connected to the magnetic attraction member (3).

3. The scrap metal recovery and screening device according to claim 2, characterized in that: The magnetic attraction member (3) comprises an electromagnet electrically connected to a control system.

4. The scrap metal recovery and screening device according to claim 3 is characterized in that: A proximity switch (6) electrically connected to a control system is arranged at the top opening of the receiving hopper (4), and the force-bearing end of the proximity switch (6) faces the electromagnet.

5. The scrap metal recovery and screening device according to claim 1, characterized in that: The magnetic attraction member (3) extends to the top of the receiving hopper (4); the feeding device comprises an extension plate (7) arranged on the magnetic attraction member (3) and located above the receiving hopper (4); cloth winding rollers (8) are rotatably mounted on the tops of the magnetic attraction member (3) and the extension plate (7); a non-woven fabric (9) is wound between the two cloth winding rollers (8); the non-woven fabric (9) is wound around the bottom of the magnetic attraction member (3) and the extension plate (7); a motor (10) electrically connected to a control system is also arranged on the mounting frame (2); the motor (10) is driven by the two cloth winding rollers (8) through a synchronous belt and a synchronous wheel.

6. The scrap metal recovery and screening device according to claim 5, characterized in that: The magnetic attraction member (3) and the extension plate (7) are both provided with chamfers (11) at the edges around the non-woven fabric (9).

7. The scrap metal recovery and screening device according to claim 5, characterized in that: A plurality of convex strips (12) are arranged at intervals on the non-woven fabric (9) along its length direction, and the convex strips (12) are parallel to the width direction of the non-woven fabric (9).

8. The scrap metal recovery and screening device according to claim 5, characterized in that: A turns sensor (13) electrically connected to a control system is arranged on the mounting frame (2), and a movable end of the turns sensor (13) is pressed against the circumferential outer wall of any cloth rolling roller (8).

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