Magnetic separation device for construction waste

Abstract

The utility model relates to building waste treatment technical field discloses a kind of magnetic separation equipment for building waste, equipment includes fixed bracket, as the second magnetic separation component of main delivery and the first magnetic separation component of suspension setting in its upper, the delivery end of second magnetic separation component is also provided with second magnet, and both constitute double magnetic separation structure in cooperation;Equipment is also integrated with dust removal component for spray dust suppression.The utility model passes through the synergistic effect of suspension type primary selection and drum type reselection, solve the problem that the existing technology is not completely sorted due to single magnetic separation, and metal recovery rate is low, dust pollution in the operation process is effectively inhibited by dust removal component, and the equipment structure design is ingenious, has the beneficial effect such as complete sorting, high metal recovery rate, green environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of construction waste treatment technology, and in particular to a magnetic separation device for construction waste. Background Technology

[0002] With the rapid development of urban construction, a large amount of construction waste has been generated. Construction waste contains various recyclable metal materials such as steel bars and iron wires, and its effective sorting and recycling has significant economic and environmental value. Magnetic separation is currently a common method for separating ferromagnetic metals from construction waste. Existing magnetic separation equipment typically uses a single magnetic separator installed on a conveyor belt, such as a suspended magnetic separator above the conveyor belt or a magnetic roller at the end of the conveyor belt.

[0003] However, construction waste has a complex composition and irregular material accumulation. When using a single magnetic separator, some metallic substances may be trapped at the bottom due to being pressed down by large pieces of non-magnetic waste such as concrete and bricks, or may be located in a weak magnetic field region due to a thick material layer, preventing the magnetic separator from effectively adsorbing and separating them. This makes it easy for a single magnetic separation process to result in incomplete separation and low metal recovery rate, leading to a waste of metal resources.

[0004] Therefore, this utility model proposes a magnetic separation device for construction waste to overcome the shortcomings of the prior art. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a magnetic separation device for construction waste, aiming to improve the problems of incomplete separation, low metal recovery rate, and serious dust pollution caused by the lack of effective dust removal measures in the existing magnetic separation devices for construction waste due to the single magnetic separation structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A magnetic separation device for construction waste includes: a fixed frame, a metal collection box, a waste collection box; and a first magnetic separation component and a second magnetic separation component.

[0007] The second magnetic separation component includes a second conveyor belt driven by a second motor.

[0008] Furthermore, the first magnetic separation component and the second magnetic separation component are combined by being suspended above the conveying path of the second conveyor belt, and the end of the second conveyor belt is also provided with a second magnet, thereby forming a dual magnetic separation structure that combines suspended primary magnetic separation and drum secondary magnetic separation.

[0009] Preferably, the first magnetic separation component includes a first magnet, a first conveyor belt running around the first magnet, and a first motor that drives the first conveyor belt to rotate via a shaft.

[0010] Preferably, the device further includes a feed channel and a baffle. After the metal material adsorbed by the first conveyor belt falls off, it enters the metal collection box through the feed channel, and the baffle is used to assist the fallen metal material in entering the feed channel.

[0011] Preferably, the second magnet at the end of the second conveyor belt is housed in a magnetic shaft, which serves as the end roller of the second conveyor belt.

[0012] Preferably, the device further includes a dust removal component, which is mounted on the fixed frame and covers the dust-generating area of ​​the second conveyor belt.

[0013] Preferably, the dust removal assembly includes a connecting flange for connecting to an external water source, a water distribution pipe fixed by a mounting rod, and atomizing nozzles evenly distributed on the water distribution pipe.

[0014] Preferably, the device further includes a feed hopper, which is disposed at the feed end of the second conveyor belt.

[0015] Preferably, baffles are provided on both sides of the second conveyor belt.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting a first magnetic separation component suspended above the conveyor belt and a second magnetic separation component located at the end of the conveyor belt, construction waste is separated by magnetic separation twice. This solves the problem that existing magnetic separation equipment cannot effectively separate the metal pressed at the bottom of the waste due to its single magnetic separation structure, resulting in incomplete separation and low metal recovery rate. It achieves the technical effect of double and thorough magnetic separation of construction waste, significantly improving the metal recovery rate and separation purity.

[0017] 2. In this utility model, by integrating a dust removal component including an atomizing nozzle into the equipment, dust is reduced by spraying throughout the material handling process. This solves the problem that existing equipment generates a large amount of dust due to the turning and falling of materials when handling construction waste, which pollutes the working environment and endangers the health of personnel. It achieves the technical effect of effectively suppressing dust generation and realizing green and environmentally friendly operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a magnetic separation device for construction waste proposed in this utility model. Figure 2 This is a schematic diagram of the feeding hopper of a magnetic separation device for construction waste proposed in this utility model; Figure 3This is a schematic diagram of the structure of the first magnetic separation component of a magnetic separation device for construction waste proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the second magnetic separation component of a magnetic separation device for construction waste proposed in this utility model; Figure 5 This is a schematic diagram of the dust removal component of a magnetic separation device for construction waste proposed in this utility model.

[0019] Legend: 1. Fixed frame; 2. First magnetic separator assembly; 201. First magnet; 202. First conveyor belt; 203. Baffle; 204. First motor; 205. Shaft; 3. Second magnetic separator assembly; 301. Second conveyor belt; 302. Second magnet; 303. Magnetic shaft; 4. Feed hopper; 5. Dust removal assembly; 501. Connecting flange; 502. Mounting rod; 503. Water distribution pipe; 504. Atomizing nozzle; 6. Material channel; 7. Metal collection box; 8. Waste collection box; 9. Baffle; 10. Second motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Please refer to the appendix. Figure 1 -Appendix Figure 5 This utility model provides a magnetic separation device for construction waste, which aims to solve the problems of incomplete separation, low metal recovery rate, and serious dust pollution during operation caused by the single magnetic separation structure of existing magnetic separation devices for construction waste.

[0022] As shown in the figure, the magnetic separation equipment for construction waste includes a fixed frame 1 as an installation base, and a second magnetic separation component 3 and a first magnetic separation component 2 fixedly connected to the fixed frame 1. The equipment also includes a metal collection box 7 and a waste collection box 8 disposed at the lower part of the fixed frame 1. The second magnetic separation component 3 is used to transport construction waste, and the first magnetic separation component 2 is suspended above the transport path of the second magnetic separation component 3. The two work together to achieve dual magnetic separation of construction waste.

[0023] To achieve the aforementioned dual magnetic separation, the core structure of this equipment lies in the specific construction and cooperative relationship between the first magnetic separation component 2 and the second magnetic separation component 3. The core structure will be described in detail below: The first magnetic separation assembly 2 includes a first magnet 201, a first conveyor belt 202 arranged around the first magnet 201, a first motor 204 for driving the first conveyor belt 202 to rotate, and a shaft 205 connecting the first motor 204 and the first conveyor belt 202. The first magnet 201 is a permanent magnet or an electromagnet and remains stationary in the working state, forming a stable strong magnetic field region below the first conveyor belt 202. The first motor 204 is fixedly connected to the shaft 205 and drives the shaft 205 to rotate, thereby driving the first conveyor belt 202 to circulate at a preset speed. The entire first magnetic separation assembly 2 is fixedly connected to the upper part of the fixed frame 1 by a bracket, and the conveying plane of the first conveyor belt 202 below it and the second conveyor belt 301 on the second magnetic separation assembly 3 below it maintains a preset distance.

[0024] To facilitate the collection of metal materials by the first magnetic separator 2, the equipment also includes a material channel 6 and a baffle 203. The material channel 6 is fixedly connected to the frame 1 and is positioned directly above the material drop area of ​​the first conveyor belt 202 in the first magnetic separator 2, extending downwards to the top of the metal collection box 7. The baffle 203 is fixedly installed on the frame of the first magnetic separator 2 and is positioned close to the outer edge of the first conveyor belt 202 after it leaves the magnetic field range of the first magnet 201. Through this structure, the metal material adsorbed on the surface of the first conveyor belt 202 will be carried away from the magnetic field area of ​​the first magnet 201 as the first conveyor belt 202 moves. After the magnetic force disappears, it will fall off due to gravity. The baffle 203 assists in peeling the metal material off the surface of the first conveyor belt 202, ensuring that it can accurately fall into the material channel 6 and finally slide into the metal collection box 7, completing the collection of materials by the initial magnetic separation.

[0025] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a specific implementation of the secondary magnetic separation structure, the second magnetic separation assembly 3 includes a second conveyor belt 301 driven by a second motor 10 to rotate in a circular motion. The conveying end of the second conveyor belt 301 is rotatably connected to the fixed frame 1. A second magnet 302 and a magnetic shaft 303 are also provided at the conveying end. More specifically, the second magnet 302 is a permanent magnet and is fixedly installed in the magnetic shaft 303, which serves as the end roller of the second conveyor belt 301. In this way, a fixed magnetic field area is formed at the end of the second conveyor belt 301, thereby performing secondary separation on the material that has undergone the primary magnetic separation.

[0026] As a preferred environmentally friendly implementation, the device also includes a dust removal component 5, which is installed on the fixed frame 1 and covers the area where dust may be generated when the second conveyor belt 301 transports materials. The dust removal component 5 includes a connecting flange 501 for connecting to an external water source, a water distribution pipe 503 fixedly connected by a mounting rod 502, and a plurality of atomizing nozzles 504 evenly distributed on the water distribution pipe 503. The water source enters the water distribution pipe 503 through the connecting flange 501 and is distributed to each atomizing nozzle 504 to be sprayed out in an atomized form.

[0027] To make the feeding and conveying process of the equipment more stable, the equipment is fixedly connected to the feeding end of the second conveyor belt 301. The feeding hopper 4 is used to guide the construction waste to fall smoothly onto the surface of the second conveyor belt 301. At the same time, baffles 9 are fixedly connected to both sides of the length direction of the second conveyor belt 301 to prevent the material from scattering from both sides during the conveying process.

[0028] Working principle: When the equipment is working, construction waste falls onto the second magnetic separation component 3 through the feed hopper 4. The second motor 10 drives the second conveyor belt 301 to transport the material at a uniform speed. The baffles 9 on both sides prevent the material from scattering. When the material is transported to the bottom of the first magnetic separation component 2, the first conveyor belt 202 driven by the first motor 204 through the shaft 205 moves in a cycle. The first magnet 201 inside generates a strong magnetic field, which adsorbs the upper metal material in the waste onto the surface of the first conveyor belt 202 and moves it to the side. When the adsorbed metal material moves to the area outside the magnetic field range of the first magnet 201, it falls off due to the disappearance of the magnetic force. With the assistance of the baffle 203, it falls into the metal collection box 7 through the material channel 6, completing the initial magnetic separation.

[0029] The remaining material after the initial magnetic separation continues to be conveyed forward by the second conveyor belt 301 to its end. The end is equipped with a magnetic shaft 303, which serves as a roller and contains a second magnet 302. When the material reaches the end, the non-magnetic waste is thrown out due to inertia and falls into the waste collection box 8, while the remaining metal material, which is pressed at the bottom, is strongly attracted to the surface of the second conveyor belt 301 by the second magnet 302 and rotates around the magnetic shaft 303. When it rotates to the non-magnetic area below the magnetic shaft 303, this part of the metal material falls off due to gravity and is also collected in the metal collection box 7. Through this dual magnetic separation structure, the present invention solves the problem of low metal recovery rate caused by single magnetic separation in existing equipment.

[0030] Throughout the conveying and sorting process, the dust removal assembly 5 installed on the fixed frame 1 works continuously. External water source enters the water distribution pipe 503 fixed by the mounting rod 502 through the connecting flange 501 and is evenly distributed to multiple atomizing nozzles 504 to form water mist, which covers the dusty area, effectively settles the dust, and solves the problem of serious dust pollution during operation.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A magnetic separation device for construction waste, comprising a fixed frame (1), a metal collection box (7), and a waste collection box (8), characterized in that, The device also includes: The second magnetic separation assembly (3) includes a second conveyor belt (301) driven by a second motor (10) for conveying construction waste; and The first magnetic separation component (2) is suspended above the conveying path of the second conveyor belt (301); The second conveyor belt (301) is provided with a second magnet (302) at the end, so that after the material passes through the first magnetic separation component (2) for the first magnetic separation, it is magnetically separated again at the end of the second conveyor belt (301), and the metal materials screened twice are collected in the metal collection box (7).

2. The magnetic separation equipment for construction waste according to claim 1, characterized in that: The first magnetic separation component (2) includes a first magnet (201), a first conveyor belt (202) running around the first magnet (201), and a first motor (204), the first motor (204) driving the first conveyor belt (202) to rotate via a shaft (205).

3. A magnetic separation device for construction waste according to claim 2, characterized in that: The device also includes a material channel (6), whereby the metal material adsorbed by the first conveyor belt (202) falls off after leaving the magnetic field range of the first magnet (201) and enters the metal collection box (7) through the material channel (6); the first magnetic separation component (2) is also provided with a baffle (203) to assist the falling metal material in entering the material channel (6).

4. The magnetic separation equipment for construction waste according to claim 1, characterized in that: The second magnet (302) at the end of the second conveyor belt (301) is built into a magnetic shaft (303), which serves as the end roller of the second conveyor belt (301).

5. A magnetic separation device for construction waste according to claim 1, characterized in that: The equipment also includes a dust removal component (5), which is mounted on the fixed frame (1) and covers the dust area of ​​the second conveyor belt (301).

6. A magnetic separation device for construction waste according to claim 5, characterized in that: The dust removal assembly (5) includes a connecting flange (501) for connecting to an external water source, a water distribution pipe (503) fixed by a mounting rod (502), and atomizing nozzles (504) evenly distributed on the water distribution pipe (503).

7. A magnetic separation device for construction waste according to claim 1, characterized in that: The device also includes a feed hopper (4), which is located at the feed end of the second conveyor belt (301).

8. A magnetic separation device for construction waste according to claim 1, characterized in that: The second conveyor belt (301) is provided with baffles (9) on both sides.

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