Metal scrap recovery device

Abstract

The invention relates to the technical field of metal waste crushing and recycling equipment, in particular to a metal waste recycling device, and aims to solve the problem that the recycling effect of metal blocks in waste generated in the model manufacturing, producing and machining process is poor and improve the stability and precision of metal block recycling. The device comprises a rack, a crushing box, a discharging pipe and a metal screening mechanism. A smashing wheel set is arranged in the smashing box, the discharging pipe is connected with the rotary stock bin, a plurality of spiral material channels are arranged in the rotary stock bin, light waste is removed through the step face and the spiral material blowing pipe, and the negative pressure discharging pipe is used for discharging the light waste. The metal screening mechanism comprises a bent pipe, a first electrode plate, a second air-assisted pipe and a second electrode plate, metal blocks are electrified through the charge repulsion effect, downward acting force is generated, the horizontal displacement of the metal blocks is shortened, and efficient separation of the metal blocks is achieved. And the metal recovery efficiency is improved, and the environmental protection performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal waste crushing and recycling equipment, and in particular to a metal waste recycling device. Background Art

[0002] The information disclosed in the background of the invention is only intended to enhance the understanding of the overall background of the invention and should not be necessarily regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Most of the waste recycling equipment in the prior art uses sorting equipment, such as vibrating screens, drum screens, etc. This method has limited effect on the separation of mixed metal and non-metal waste. It also includes the use of electromagnetic fields to attract metals for sorting. This method has a better effect on ferromagnetic metals, but has a poor effect on the separation of non-ferromagnetic metals and non-metallic materials. There is also the use of high-speed airflow to sort light non-metallic materials. This method has a better effect on light materials, but has limited effect on the separation of heavy metal materials.

[0004] The waste generated in the model manufacturing process includes a large number of metal scraps and non-metallic residues. Among them, metal scraps are generated during cutting, stamping, milling and other processes, and non-metallic residues are mainly plastic products and other polymer materials. The mixture of these wastes not only takes up a lot of space, but also pollutes the environment. Effectively recycling and sorting these wastes is of great significance for resource reuse and environmental protection.

[0005] Therefore, it is necessary to study a metal waste recycling device for model manufacturing production. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a metal waste recovery device, which aims to solve the problem of poor recovery of metal blocks in waste generated in the model manufacturing production process, and improve the stability and accuracy of metal block recovery.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A metal waste recycling device comprises a frame, a crushing box is installed on the frame, a discharge pipe is arranged below the crushing box, and a metal screening mechanism is arranged at the lower end of the discharge pipe;

[0009] A light waste discharge device is provided between the crushing box and the discharge pipe;

[0010] The crushing box is provided with more than two discharge ports, and a crushing wheel set is installed in the crushing box;

[0011] The light waste discharge device comprises a gyratory bin, and a discharge port communicating with the discharge pipe is provided at the bottom center of the gyratory bin;

[0012] The inner side wall of the gyratory bin is provided with two or more spiral channels, the feed end of the spiral channel is correspondingly connected to the discharge port, and the discharge end of the spiral channel is connected to the discharge port;

[0013] The inner side of the spiral channel in contact with the crushed waste blocks is provided with a stepped surface, so as to make the waste blocks generate greater vibration when feeding along the spiral channel, so as to shake off the light waste;

[0014] A corresponding spiral blowing pipe is provided on the top of one side of the spiral channel close to the center of the cyclotron silo, and a plurality of blowing nozzles facing the stepped surface are provided on one side of the spiral blowing pipe close to the inner side wall of the cyclotron silo;

[0015] The air inlet end of the spiral blowing pipe is connected to the first air-assisting pipe;

[0016] A negative pressure discharge pipe is provided at the top center of the spiral silo;

[0017] The metal screening mechanism comprises a curved pipe arranged at the lower end of the discharge pipe, a first electrode plate is fixed to the side wall of the curved pipe, one end of the curved pipe away from the discharge pipe is in communication with a second horizontally arranged air-assisting pipe, an air outlet end of the second air-assisting pipe is fixedly connected to a connecting pipe, the other end of the connecting pipe is connected to a discharge pipe, and a second electrode plate is fixed to the top of the discharge pipe;

[0018] The first electrode plate and the second electrode plate are used to charge the metal blocks in the waste block and generate a force of like charges repelling each other, so that the metal blocks in the waste block are subjected to a downward force when they are horizontally thrown out through the discharge pipe, thereby shortening the horizontal displacement of the thrown metal blocks and realizing the separation and recovery of the crushed metal blocks.

[0019] Preferably, a first fan blade is installed in the first wind-assisting tube, and a second fan blade is installed in one end of the wind-assisting tube close to the back side of the curved tube;

[0020] The first blade is driven by a first bevel gear set, and the second blade is driven by a second bevel gear set;

[0021] The driving gears driven by the first bevel gear set and the second bevel gear set are both mounted on the rotating rod, and the rotating rod is driven by the third bevel gear set, and the driving gear of the third bevel gear set is mounted on the end of the rotating shaft of the crushing wheel set.

[0022] Preferably, the air outlet end of the first air-assisting pipe is provided with more than two branch air pipes correspondingly connected to the spiral blowing pipe.

[0023] Preferably, a frame plate is provided on one side of the spiral material channel close to the center of the rotary material bin, and the spiral blowing pipes are installed on the top side of the frame plate corresponding to the spiral material channel.

[0024] Preferably, the air inlet ends of the first air-assisting duct and the second air-assisting duct are both provided with corresponding filters; and the feed inlet of the crushing box is equipped with a hopper.

[0025] Preferably, a middle plate is provided in the crushing box, and the crushing box is divided into a first crushing chamber and a second crushing chamber by the middle plate, and a first crushing wheel group and a second crushing wheel group are respectively installed in the first crushing chamber and the second crushing chamber, the active crushing wheels of the first crushing wheel group and the second crushing wheel group are both installed on the first rotating shaft, and the driven crushing wheels of the first crushing wheel group and the second crushing wheel group are both installed on the second rotating shaft, and the first rotating shaft and the second rotating shaft are respectively installed with a first gear and a second gear that are meshed with each other at one end.

[0026] Preferably, the third bevel gear set is provided with a first mounting box;

[0027] The input end of the first rotating shaft is transmission-connected to the driving device, and the driving device is installed in the second installation box. The first installation box and the second installation box are respectively installed and fixed at two ends of the crushing box.

[0028] The present invention has at least the following beneficial effects:

[0029] The present invention can effectively remove light materials such as plastic powder and dust from waste materials through the light waste discharge device, which not only reduces the burden of subsequent processing, but also improves the accuracy of metal and non-metal separation. In particular, the step surface of the spiral material channel and the blower nozzle are designed to ensure that light waste is fully shed, further improving the separation and recovery efficiency of metal blocks.

[0030] In the present invention, since the horizontal displacement of the metal block is shortened, it is easier to design a more concentrated collection area nearby. At the same time, since the metal block itself has a greater density than the plastic block, when it is thrown out horizontally, it is affected by the synergistic effect of gravity acceleration and like-charged repulsive forces, thereby ensuring the accuracy and purity of the separation and recovery of the metal block. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of the crushing box;

[0033] Figure 3 It is a schematic diagram of the internal structure of the metal screening mechanism;

[0034] Figure 4 It is a schematic diagram of the internal structure of the light waste discharge device;

[0035] Figure 5 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0036] The reference numerals are as follows:

[0037] 100, frame; 200, filter; 1, hopper; 11, first crushing chamber; 111, first crushing wheel group; 12, second crushing chamber; 121, second crushing wheel group; 13, first rotating shaft; 131, first gear; 14, second rotating shaft; 141, second gear; 2, crushing box; 21, middle plate; 22, first discharge pipe; 22, second discharge pipe; 3, second installation box; 4, first installation box; 41, rotating rod; 42, first bevel gear group; 43, second bevel gear group; 5, rotary material Warehouse; 51, first spiral material channel; 511, first spiral blowing pipe; 52, second spiral material channel; 521, second spiral blowing pipe; 53, blowing nozzle; 54, stepped surface; 6, feeding pipe; 61, first electrode plate; 7, second wind-assisting pipe; 71, discharge pipe; 72, second fan blade; 73, connecting pipe; 74, second electrode plate; 8, first wind-assisting pipe; 81, mounting plate; 82, first fan blade; 821, mounting shaft; 83, first branch air duct; 84, second branch air duct; 9, negative pressure discharge pipe. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0039] Figures 1 to 5 A metal waste recycling device is shown, comprising a frame 100, a crushing box 2 is mounted on the frame 100, a discharge pipe is arranged below the crushing box 2, and in this embodiment, the first discharge pipe 22 and the second discharge pipe 22 are included, and both are funnel-shaped discharge pipes, and a metal screening mechanism is arranged at the lower end of the discharge pipe;

[0040] A light waste discharge device is provided between the crushing box 2 and the discharge pipe, and the light waste mainly includes plastic powder and dust;

[0041] The crushing box 2 is provided with more than two discharge ports, and a crushing wheel set is installed in the crushing box 2;

[0042] The light waste discharge device comprises a gyroscopic bin 5, which is conical or hemispherical, and a discharge port communicating with the discharge pipe is provided at the bottom center of the gyroscopic bin 5;

[0043] The inner side wall of the gyratory bin 5 is provided with more than two spiral channels, and the feed end of the spiral channels is connected to the discharge port correspondingly. In this embodiment, the crushing box 2 is specifically provided with a first discharge port and a second discharge port, which are respectively communicated with the first spiral channel 51 and the second spiral channel 52, and the discharge end of the spiral channel is communicated with the discharge port;

[0044] The inner side of the spiral channel in contact with the crushed waste block is provided with a stepped surface 54, which is used to make the waste block generate greater vibration when feeding along the spiral channel, so as to shake off the light waste;

[0045] A corresponding spiral blowing pipe is provided on the top of one side of the spiral channel close to the center of the cyclotron silo 5, and a plurality of blowing nozzles 53 facing the stepped surface 54 are provided on one side of the spiral blowing pipe close to the inner side wall of the cyclotron silo 5;

[0046] The air inlet end of the spiral blowing pipe is connected to the first air-assisting pipe 8. In this embodiment, the air outlet end of the first air-assisting pipe 8 is provided with more than two branch air pipes correspondingly connected to the spiral blowing pipe; more specifically, the branch air pipe includes a first branch air pipe 83 and a second branch air pipe 84, which are respectively connected to the first spiral blowing pipe 511 and the second spiral blowing pipe 521;

[0047] A negative pressure discharge pipe 9 is provided at the top center of the spiral silo, and the negative pressure discharge pipe 9 is connected to a negative pressure device, and existing technology can be used, such as a negative pressure dust removal device;

[0048] The metal screening mechanism comprises a curved pipe arranged at the lower end of the discharge pipe, a first electrode plate 61 is fixed to the side wall of the curved pipe, one end of the curved pipe away from the discharge pipe is communicated with a horizontally arranged second air-assisting pipe 7, a connecting pipe 73 is fixedly connected to the air outlet end of the second air-assisting pipe 7, the other end of the connecting pipe 73 is connected to a discharge pipe 71, the discharge pipe 71 is a flat expansion pipe, used to improve the effect of the second electrode plate 74 and the separation and recovery accuracy of metal blocks, and a second electrode plate 74 is fixed to the top of the discharge pipe 71;

[0049] The first electrode plate 61 and the second electrode plate 74 are used to charge the metal blocks in the waste block and generate a force of like charges repelling each other, so that the metal blocks in the waste block are subjected to a downward force when they are horizontally thrown out through the discharge pipe 71, thereby shortening the horizontal displacement of the thrown metal blocks and realizing the separation and recovery of the crushed metal blocks.

[0050] Among them, a frame plate is provided on one side of the spiral material channel close to the center of the rotary material bin 5, and the spiral blowing pipes are installed on the top side of the frame plate corresponding to the spiral material channel.

[0051] The first wind-assisting tube 8 is provided with a first blade 82, and the end of the wind-assisting tube close to the back side of the curved tube is provided with a second blade 72, and the curved tube has the same bending direction as the blowing direction in the second wind-assisting tube 7;

[0052] The mounting shaft 821 of the first blade 82 is mounted through the mounting plate 81 and driven by the first bevel gear set 42, and the second blade 72 is driven by the second bevel gear set 43;

[0053] The driving gears driven by the first bevel gear set 42 and the second bevel gear set 43 are both mounted on the rotating rod 41. The rotating rod 41 is driven by the third bevel gear set. The driving gear of the third bevel gear set is mounted on the end of the rotating shaft of the grinding wheel set.

[0054] The crushing box 2 is provided with a middle plate 21, and the crushing box 2 is divided into a first crushing chamber 11 and a second crushing chamber 12 by the middle plate 21. The first crushing chamber 11 and the second crushing chamber 12 are respectively installed with a first crushing wheel group 111 and a second crushing wheel group 121. The active crushing wheels of the first crushing wheel group 111 and the second crushing wheel group 121 are both installed on the first rotating shaft 13, and the driven crushing wheels of the first crushing wheel group 111 and the second crushing wheel group 121 are both installed on the second rotating shaft 14. The first rotating shaft 13 and the second rotating shaft 14 are respectively installed with a first gear 131 and a second gear 141 that are meshed and matched. The middle plate 21 is also used to improve the rotation stability of the crushing wheel group.

[0055] The third bevel gear set is provided with a first installation box 4; the input end of the first rotating shaft 13 is transmission-connected with the driving device, and the driving device can be a reducer. The driving device is installed in the second installation box 3, and the first installation box 4 and the second installation box 3 are respectively installed and fixed at the two ends of the crushing box 2, and the feed port of the crushing box 2 is installed with a hopper 1, and the air inlet ends of the first air-assisting pipe 8 and the second air-assisting pipe 7 are both provided with corresponding filters 200.

[0056] The working principle of the present invention is as follows: the waste generated in the model manufacturing production process enters the first crushing chamber 11 and the second crushing chamber 12 of the crushing box 2 from the hopper 1, and is crushed into waste blocks by the first crushing wheel group 111 and the second crushing wheel group 121. The waste blocks mainly contain metal blocks, plastic blocks and light waste. The waste blocks enter the corresponding spiral material channel in the cyclonic silo 5 through each discharge port, and vibrate through the step surface 54 of the spiral material channel, so that the light waste is gathered and discharged from the center of the cyclonic silo 5 under the negative pressure of the negative pressure discharge pipe 9.

[0057] At the same time, the spiral blowing pipe corresponding to each spiral material channel blows air through the blowing nozzle 53 to promote material discharge (to avoid blockage), and cooperates with the step surface 54 to promote the shedding of light waste, so that the shaken light waste is easier to gather and discharge to the center of the rotary silo 5.

[0058] After the light waste is discharged, the waste blocks enter the discharge pipe 6 through the discharge port, and the metal blocks are charged through the first electrode plate 61 at the bend. Since the interference of dust and plastic powder is eliminated, the metal blocks are easy to be charged, and the charging rate is improved; then, the waste blocks enter the second wind-assisted pipe 7. With the help of the wind force generated by the second fan blades 72, it is helpful to avoid blockage. At the same time, under the action of wind mixing, the charging is more uniform, and the initial speed is provided for the waste blocks, which is convenient for the separation and recovery of metal blocks in the throwing stage.

[0059] The separation of the metal blocks is achieved by charging the metal blocks in the waste blocks with the second electrode plate 74, and cooperating with the first electrode plate 61 to produce a repulsive effect of like charges, thereby generating a downward force on the horizontally thrown waste blocks, thereby shortening the horizontal displacement of the metal blocks, thereby completing the separation and recovery of the metal blocks in the waste blocks.

[0060] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0061] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0062] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A metal waste recycling device, comprising a frame, a crushing box is installed on the frame, a discharge pipe is provided below the crushing box, and a metal screening mechanism is provided at the lower end of the discharge pipe; characterized in that: A light waste discharge device is provided between the crushing box and the discharge pipe; The crushing box is provided with more than two discharge ports, and a crushing wheel set is installed in the crushing box; The light waste discharge device comprises a gyratory bin, and a discharge port communicating with the discharge pipe is provided at the bottom center of the gyratory bin; The inner side wall of the gyratory bin is provided with two or more spiral channels, the feed end of the spiral channel is correspondingly connected to the discharge port, and the discharge end of the spiral channel is connected to the discharge port; The inner side of the spiral channel in contact with the crushed waste blocks is provided with a stepped surface, so as to make the waste blocks generate greater vibration when feeding along the spiral channel, so as to shake off the light waste; A corresponding spiral blowing pipe is provided on the top of one side of the spiral channel close to the center of the cyclotron silo, and a plurality of blowing nozzles facing the stepped surface are provided on one side of the spiral blowing pipe close to the inner side wall of the cyclotron silo; The air inlet end of the spiral blowing pipe is connected to the first air-assisting pipe; A negative pressure discharge pipe is provided at the top center of the spiral silo; The metal screening mechanism comprises a curved pipe arranged at the lower end of the discharge pipe, a first electrode plate is fixed to the side wall of the curved pipe, one end of the curved pipe away from the discharge pipe is in communication with a second horizontally arranged air-assisting pipe, an air outlet end of the second air-assisting pipe is fixedly connected to a connecting pipe, the other end of the connecting pipe is connected to a discharge pipe, and a second electrode plate is fixed to the top of the discharge pipe; The first electrode plate and the second electrode plate are used to charge the metal blocks in the waste block and generate a force of like charges repelling each other, so that the metal blocks in the waste block are subjected to a downward force when they are horizontally thrown out through the discharge pipe, thereby shortening the horizontal displacement of the thrown metal blocks and realizing the separation and recovery of the crushed metal blocks.

2. The metal waste recycling device according to claim 1, characterized in that: A first fan blade is installed in the first wind-assisting tube, and a second fan blade is installed in one end of the wind-assisting tube close to the back side of the curved tube; The first blade is driven by a first bevel gear set, and the second blade is driven by a second bevel gear set; The driving gears driven by the first bevel gear set and the second bevel gear set are both mounted on the rotating rod, and the rotating rod is driven by the third bevel gear set, and the driving gear of the third bevel gear set is mounted on the end of the rotating shaft of the crushing wheel set.

3. The metal waste recycling device according to claim 2, characterized in that: The air outlet end of the first air-assisting pipe is provided with more than two branch air pipes correspondingly connected to the spiral blowing pipe.

4. The metal waste recycling device according to claim 1, characterized in that: A frame plate is provided on one side of the spiral material channel close to the center of the rotary material bin, and the spiral blowing pipes are installed on the top side of the frame plate corresponding to the spiral material channel.

5. The metal waste recycling device according to claim 1, characterized in that: The air inlet ends of the first air-assisting duct and the second air-assisting duct are both provided with corresponding filters; and the feed inlet of the crushing box is equipped with a hopper.

6. The metal waste recycling device according to claim 2, characterized in that: A middle plate is provided in the crushing box, and the crushing box is divided into a first crushing chamber and a second crushing chamber by the middle plate. The first crushing chamber and the second crushing chamber are respectively installed with a first crushing wheel group and a second crushing wheel group. The active crushing wheels of the first crushing wheel group and the second crushing wheel group are both installed on the first rotating shaft, and the driven crushing wheels of the first crushing wheel group and the second crushing wheel group are both installed on the second rotating shaft. The first rotating shaft and the second rotating shaft are respectively installed with a first gear and a second gear that are meshed with each other at one end.

7. The metal waste recycling device according to claim 6, characterized in that: The third bevel gear set is provided with a first mounting box; The input end of the first rotating shaft is transmission-connected to the driving device, and the driving device is installed in the second installation box. The first installation box and the second installation box are respectively installed and fixed at two ends of the crushing box.

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