A metal waste recycling device

Abstract

The present invention relates to the technical field of metal waste crushing and recycling equipment, and specifically relates to a metal waste recycling device, aiming to solve the problem of poor recovery effect of metal blocks in the waste generated during the production and processing of model manufacturing, and improve the stability and accuracy of metal block recovery. The device includes a frame, a crushing box, a discharge pipe, and a metal screening mechanism. A crushing wheel set is provided in the crushing box, the discharge pipe is connected to a swirling storage bin, and multiple spiral channels are provided in the swirling storage bin. Light waste is removed through a stepped surface and a spiral blowing pipe, and a negative pressure discharge pipe is used to discharge the light waste. The metal screening mechanism includes a bent pipe, a first electrode plate, a second air-assisted pipe, and a second electrode plate. The metal blocks are charged through the action of charge repulsion and generate a downward force, shortening their horizontal displacement to achieve efficient separation of the metal blocks. The present invention also improves the metal recovery efficiency and enhances the environmental protection performance.

Description

Technical Field

[0001] The present 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 understanding of the overall background of the invention and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art.

[0003] Existing waste recycling equipment mostly uses sorting equipment, such as vibrating screens and drum screens, which are limited in their effectiveness at separating mixed metal and non-metal waste. Other methods utilize the attraction of electromagnetic fields to separate metals, which works well for ferromagnetic metals but is less effective for separating non-ferromagnetic metals and non-metallic materials. Another method utilizes high-speed airflow to sort lightweight non-metallic materials, which works well for lightweight materials but has limited effectiveness for separating heavy metals.

[0004] The waste generated during model manufacturing production and processing includes a large amount of metal scraps and non-metallic scraps. Metal scraps are produced during processes such as cutting, stamping, and milling, while non-metallic scraps are primarily plastics and other polymer materials. This mixture of waste materials not only takes up a lot of space but also pollutes the environment. Effectively recycling and sorting this waste is crucial 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 response to the problems existing in the prior art, the purpose of the present invention is to provide a metal waste recycling 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 scrap recycling device comprises a frame, a crushing box is mounted 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;

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

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

[0011] The lightweight waste discharging device includes a rotary bin, and a blanking port communicating with the discharge pipe is formed at the center of the bottom of the rotary bin;

[0012] More than two spiral channels are arranged on the inner side wall of the rotary bin. The feeding end of the spiral channel is correspondingly connected to the discharge port, and the discharging end of the spiral channel communicates with the blanking port;

[0013] The inner sides of the spiral channels in contact with the crushed waste blocks are all set as stepped surfaces, which are used to make the waste blocks generate greater vibration when discharging along the spiral channels, so as to shake off the lightweight waste;

[0014] Corresponding spiral blowing pipes are arranged at the tops of the spiral channels on the side close to the center of the rotary bin. A plurality of blowing nozzles facing the stepped surface are arranged on one side of each spiral blowing pipe close to the inner side wall of the rotary bin;

[0015] The air inlet ends of the spiral blowing pipes all communicate with the first air assisting pipe;

[0016] A negative pressure discharge pipe is arranged at the center of the top of the rotary bin;

[0017] The metal screening mechanism includes an elbow pipe arranged at the lower end of the discharge pipe. A first electrode plate is fixed on the side wall of the elbow pipe. One end of the elbow pipe far from the discharge pipe communicates with a horizontally arranged second air assisting pipe. A connecting pipe is fixed to the air outlet end of the second air assisting pipe. The other end of the connecting pipe is connected to a discharge pipe, and a second electrode plate is fixed to the top inside the discharge pipe;

[0018] The first electrode plate and the second electrode plate are used to make the metal blocks in the waste blocks charged and generate a repulsive force of the same sex, so that the metal blocks in the waste blocks are subjected to a downward force when being horizontally thrown out through the discharge pipe, so as to shorten the horizontal displacement of the thrown metal blocks and realize the separation and recovery of the crushed metal blocks.

[0019] Preferably, a first fan blade is installed in the first air assisting pipe, and a second fan blade is installed in one end of the air assisting pipe close to the back side of the elbow pipe;

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

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

[0022] Preferably, two or more branch air pipes corresponding to and communicating with the spiral blowing pipes are arranged at the air outlet end of the first air assisting pipe.

[0023] Preferably, frame plates are provided on one side of the spiral chute close to the center of the rotary bin, and the spiral blowing pipes are all installed on the top side of the frame plates corresponding to the spiral chutes.

[0024] Preferably, filter nets are provided at the air inlet ends of the first air-assisted pipe and the second air-assisted pipe; a hopper is installed at the feed inlet of the crushing box.

[0025] Preferably, a middle plate is provided in the crushing box. The crushing box is divided into a first crushing chamber and a second crushing chamber by the middle plate. A first crushing wheel set and a second crushing wheel set are respectively installed in the first crushing chamber and the second crushing chamber. The driving crushing wheels of the first crushing wheel set and the second crushing wheel set are all installed on the first rotating shaft, and the driven crushing wheels of the first crushing wheel set and the second crushing wheel set are all installed on the second rotating shaft. One ends of 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.

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

[0027] The input end of the first rotating shaft is in transmission connection with a driving device. The driving device is installed in a second installation box. The first installation box and the second installation box are respectively installed and fixed at both ends of the crushing box.

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

[0029] Through the light waste discharging device of the present invention, light substances such as plastic powder and dust in the waste can be effectively removed, which not only reduces the burden of subsequent treatment, but also improves the accuracy of metal and non-metal separation. Especially through the cooperation design of the stepped surface of the spiral chute and the blowing nozzle, it can ensure that the light waste falls off sufficiently, and further improve 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 horizontally thrown, under the synergistic cooperation of the gravitational acceleration and the same-sex repulsion force, the accuracy and purity of the separation and recovery of the metal block are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0034] Figure 4 Schematic diagram of the internal structure of the lightweight waste discharging device;

[0035] Figure 5 is Figure 4 The enlarged structure diagram at position A in

[0036] The reference numerals are as follows:

[0037] 100, frame; 200, filter screen; 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; 23, second discharge pipe; 3, second installation box; 4, first installation box; 41, rotating rod; 42, first bevel gear set; 43, second bevel gear set; 5, swirling silo; 51, first spiral chute; 511, first spiral blowing pipe; 52, second spiral chute; 521, second spiral blowing pipe; 53, blowing nozzle; 54, stepped surface; 6, blanking pipe; 61, first electrode plate; 7, second air-assisting pipe; 71, discharge pipe; 72, second fan blade; 73, connecting pipe; 74, second electrode plate; 8, first air-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 implementation manners

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

[0039] Figures 1 to 5 A metal waste recycling device is shown, which includes a frame 100, a crushing box 2 is installed on the frame 100, a discharge pipe is provided below the crushing box 2. In this embodiment, it includes a first discharge pipe 22 and a second discharge pipe 23, and both are funnel-shaped discharge pipes, and a metal screening mechanism is arranged at the lower end of the discharge pipe; [[ID=

[23] ]

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

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

[0042] The lightweight waste discharging device includes a swirling silo 5, the swirling silo 5 is conical or hemispherical, and a blanking port communicating with the discharge pipe is opened at the center of the bottom of the swirling silo 5;

[0043] The inner sidewall of the rotary silo 5 is provided with more than two spiral channels. The feeding end of the spiral channel is correspondingly connected to the discharging port. In this embodiment, specifically, the crushing box 2 is provided with a first discharging port and a second discharging port, which are respectively communicated with the first spiral channel 51 and the second spiral channel 52. The discharging end of the spiral channel is communicated with the blanking port;

[0044] The inner sides of the spiral channels in contact with the crushed waste blocks are all set as stepped surfaces 54, which are used to make the waste blocks generate greater vibration when discharging along the spiral channels, so as to shake off the light waste;

[0045] On the top side of one side of each spiral channel close to the center of the rotary silo 5, corresponding spiral blowing pipes are provided. On one side of each spiral blowing pipe close to the inner sidewall of the rotary silo 5, a plurality of blowing nozzles 53 facing the stepped surface 54 are provided;

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

[0047] At the center of the top of the rotary silo 5, a negative pressure discharge pipe 9 is provided. The negative pressure discharge pipe 9 is communicated with a negative pressure device, and the existing technology can be adopted, such as a negative pressure dust removal device;

[0048] The metal screening mechanism includes an elbow pipe arranged at the lower end of the discharge pipe. A first electrode plate 61 is fixed on the sidewall of the elbow pipe. One end of the elbow pipe far away from the discharge pipe is communicated with a horizontally arranged second air assisting pipe 7. The air outlet end of the second air assisting pipe 7 is fixedly connected with a connecting pipe 73. The other end of the connecting pipe 73 is connected with a discharge pipe 71. The discharge pipe 71 is a flat expansion pipe, which is used to improve the action effect of the second electrode plate 74 and the separation and recovery accuracy of the metal blocks. A second electrode plate 74 is fixed at the top inside the discharge pipe 71;

[0049] The first electrode plate 61 and the second electrode plate 74 are used to make the metal blocks in the waste blocks charged and generate a repulsive force of the same sex, so that the metal blocks in the waste blocks are subjected to a downward force when being horizontally thrown out through the discharge pipe 71, so as to shorten the horizontal displacement of the thrown metal blocks and realize the separation and recovery of the crushed metal blocks.

[0050] Wherein, on one side of each spiral channel close to the center of the rotary silo 5, a frame plate is provided, and the spiral blowing pipes are all installed on the top side of the frame plates corresponding to the spiral channels.

[0051] Among them, a first fan blade 82 is installed in the first air-assisted pipe 8, a second fan blade 72 is installed at one end of the air-assisted pipe close to the back side of the elbow pipe, and the bending direction of the elbow pipe is the same as the blowing direction in the second air-assisted pipe 7;

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

[0053] The driving gears of the first bevel gear set 42 drive and the second bevel gear set 43 drive are both installed on the rotating rod 41, the rotating rod 41 is driven by a third bevel gear set, and the driving gear of the third bevel gear set is installed at the end of the rotating shaft of the crushing wheel set.

[0054] A middle plate 21 is arranged in the crushing box 2. The crushing box 2 is divided into a first crushing chamber 11 and a second crushing chamber 12 by the middle plate 21. A first crushing wheel set 111 and a second crushing wheel set 121 are respectively installed in the first crushing chamber 11 and the second crushing chamber 12. The driving crushing wheels of the first crushing wheel set 111 and the second crushing wheel set 121 are both installed on the first rotating shaft 13, and the driven crushing wheels of the first crushing wheel set 111 and the second crushing wheel set 121 are both installed on the second rotating shaft 14. A first gear 131 and a second gear 141 which are meshed with each other are respectively installed at one ends of the first rotating shaft 13 and the second rotating shaft 14. The function of the middle plate 21 is also beneficial to improving the rotation stability of the crushing wheel set.

[0055] The third bevel gear set is provided with a first mounting box 4; the input end of the first rotating shaft 13 is in transmission connection with a driving device. The driving device can be a speed reducer. The driving device is installed in a second mounting box 3. The first mounting box 4 and the second mounting box 3 are respectively installed and fixed at both ends of the crushing box 2. A hopper 1 is installed at the feed inlet of the crushing box 2. Filter screens 200 corresponding to the air inlet ends of the first air-assisted pipe 8 and the second air-assisted pipe 7 are arranged.

[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 set 111 and the second crushing wheel set 121. The waste blocks mainly contain metal blocks, plastic blocks and light waste. The waste blocks enter the corresponding spiral channels in the revolving bin 5 through each discharge port, and generate vibration through the stepped surface 54 of the spiral channel, so that the light waste converges and is discharged from the center in the revolving bin 5 under the negative pressure of the negative pressure discharge pipe 9.

[0057] Meanwhile, the spiral blowing pipes corresponding to each spiral chute drive the material feeding by blowing through the blowing nozzles 53 (to avoid material blockage), and cooperate with the stepped surface 54 to promote the shedding of light waste, making it easier for the shaken-off light waste to converge towards the center in the revolving bin 5 and be discharged.

[0058] The waste blocks after discharging the light waste enter the feeding pipe 6 through the feeding port, and the metal blocks are charged by the first electrode plate 61 at the elbow. Since the interference of dust and plastic powder is excluded, the metal blocks are easy to be charged, improving the charging rate. Then, the waste blocks enter the second air-assisted pipe 7, and with the assistance of the wind generated by the second fan blade 72, it is beneficial to avoid material blockage. At the same time, under the action of wind mixing, the charging becomes more uniform, and an initial velocity is provided for the waste blocks, facilitating the separation and recovery of the metal blocks in the throwing stage.

[0059] The separation of the metal blocks is achieved by charging the metal blocks in the waste blocks through the second electrode plate 74 and cooperating with the first electrode plate 61 to generate the repulsive force of the same sex, thereby generating a downward force on the horizontally thrown waste blocks, and then shortening the horizontal displacement of the discharged metal blocks, thus 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. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0061] The terms "upper", "lower", "outer side", "inner side", etc. in the specification, claims and above-mentioned drawings of the present invention, if any, are used to distinguish the relative relationship in position and do not need to be qualitatively defined. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0062] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can 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 will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A metal waste recycling device, comprising a frame, on which a crushing box is installed. There is a discharge pipe below the crushing box, and a metal screening mechanism is arranged at the lower end of the discharge pipe; characterized in that: A light waste discharge device is arranged between the crushing box and the discharge pipe; The crushing box is provided with more than two discharge ports, and a crushing wheel group is installed in the crushing box; The light waste discharge device includes a swirling bin, and a blanking port communicating with the discharge pipe is opened at the center of the bottom of the swirling bin; More than two spiral channels are arranged on the inner side wall of the swirling bin. The feeding end of the spiral channel is correspondingly connected to the discharge port, and the discharging end of the spiral channel communicates with the blanking port; The inner sides of the spiral channels in contact with the crushed waste blocks are all set as stepped surfaces, so as to make the waste blocks generate greater vibration when discharging along the spiral channels, so as to shake off the light waste; On the top of one side of each spiral channel close to the center of the swirling bin, a corresponding spiral blowing pipe is arranged, and several blowing nozzles facing the stepped surface are arranged on one side of each spiral blowing pipe close to the inner side wall of the swirling bin; The air inlet ends of the spiral blowing pipes communicate with the first air assisting pipe; A negative pressure discharge pipe is arranged at the center of the top of the swirling bin; The metal screening mechanism includes a bent pipe arranged at the lower end of the discharge pipe. A first electrode plate is fixed on the side wall of the bent pipe. One end of the bent pipe far from the discharge pipe communicates with a horizontally arranged second air assisting pipe. The air outlet end of the second air assisting pipe is fixedly connected with a connecting pipe, and the other end of the connecting pipe is connected with a discharge pipe. A second electrode plate is fixed on the top inside the discharge pipe; The first electrode plate and the second electrode plate are used to make the metal blocks in the waste blocks charged and generate a repulsive force of the same sex, so that the metal blocks in the waste blocks are subjected to a downward force when being horizontally thrown out through the discharge pipe, so as to shorten the horizontal displacement of the thrown metal blocks and realize the separation and recycling 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 air assisting pipe, and a second fan blade is installed in the air assisting pipe near the back side of the bent pipe; The first fan blade is driven by a first bevel gear set, and the second fan blade is driven by a second bevel gear set; The driving gears of the first bevel gear set drive and the second bevel gear set drive are all installed on a rotating rod, and the rotating rod is driven by a third bevel gear set. The driving gear of the third bevel gear set is installed at the end of the rotating shaft of the crushing wheel group.

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 corresponding to and communicating with the spiral blowing pipes.

4. The metal waste recycling device according to claim 1, characterized in that: Frame plates are arranged on one side of each spiral channel close to the center of the swirling bin, and the spiral blowing pipes are all installed on the top sides of the frame plates of the corresponding spiral channels.

5. The metal waste recycling device according to claim 1, characterized in that: Corresponding filter screens are arranged at the air inlet ends of the first air assisting pipe and the second air assisting pipe; a hopper is installed at the feeding port of the crushing box.

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

7. The metal waste recycling device according to claim 6, characterized in that: The third bevel gear set is provided with a first installation box; The input end of the first rotating shaft is in transmission connection with a driving device. The driving device is installed in a 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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