Iron removing and distributing device for material transportation

Abstract

The utility model relates to material transportation is with iron removal and divides material device, including transfer hopper, bidirectional belt conveyor, strong magnetic de-ironer and plate chain conveyor, the transfer hopper is used for storing material, its bottom is connected with the discharge pipe, and the discharge is aligned bidirectional belt conveyor's feed end, the strong magnetic de-ironer is installed in the top of bidirectional belt conveyor, is used for removing the iron impurity in material, the discharge end of bidirectional belt conveyor is connected with the feed end of plate chain conveyor, is used for conveying material to subsequent section, can form gradient magnetic field through the strong magnetic de-ironer and electromagnet bar array through the utility model, utilize the principle that ferromagnetic substance is stressed in the magnetic field, realizes the efficient removal of different particle size iron miscellaneous.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, and in particular to an iron removal and sorting device for material transportation. Background Technology

[0002] In the field of cementitious material production, the efficient operation of material transportation and distribution devices plays a decisive role in production quality and environmental protection indicators. Existing technologies, such as traditional loader unloading methods, have drawbacks, resulting in an average iron impurity content of approximately 0.5-1.2% in the material, which leads to a shortened replacement cycle for subsequent ball mill liners.

[0003] Existing technologies struggle to effectively remove fine iron impurities from materials, and equipment wear remains a persistent problem in the processing of high-iron-content materials (such as slag powder). Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing an iron removal and material separation device for material transportation. The specific technical solution is as follows:

[0005] A material handling and iron removal and sorting device includes a transfer hopper, a bidirectional belt conveyor, a strong magnetic separator, and a plate chain conveyor. The transfer hopper is used to store materials and has a discharge pipe connected to its bottom, with the discharge aligned with the feed end of the bidirectional belt conveyor. The strong magnetic separator is installed above the bidirectional belt conveyor to remove iron impurities from the materials. The discharge end of the bidirectional belt conveyor is connected to the feed end of the plate chain conveyor to transport the materials to subsequent processing sections.

[0006] Preferably, a number of electromagnet rods are arranged in an array via mounting brackets between the discharge pipe and the bidirectional belt conveyor.

[0007] Preferably, in the strong magnetic separator, neodymium iron boron permanent magnets are arranged on the outer layer with a magnetic field strength of 18,000 gauss, and electromagnetic coils are embedded in the inner layer to provide an adjustable magnetic field of 0-5,000 gauss. The overall magnetic field strength is continuously adjustable in the range of 18,000-23,000 gauss.

[0008] Preferably, it also includes a dust removal component, which includes a dust collection hood and a vacuum cleaner. The dust collection hood is positioned above the transfer hopper and is connected to the vacuum cleaner via a pipe to collect dust using the negative pressure of the vacuum cleaner.

[0009] Preferably, it also includes a cleaning assembly, which includes an electric telescopic rod installed at the bottom of the transfer hopper. The output end of the electric telescopic rod is connected to a pushing cleaning plate. The bottom surface of the pushing cleaning plate is flush with the top surface of the electromagnet rod, and the top surface of the pushing cleaning plate is flush with the bottom of the strong magnetic separator.

[0010] The beneficial effects of this utility model are:

[0011] 1. Through the dual-layer adsorption design of strong magnetic separator (18000-23000 Gauss adjustable magnetic field) and electromagnet rod array (5000-8000 Gauss magnetic field), the removal rate of iron impurities in materials can be effectively improved, significantly reducing the wear of subsequent equipment such as ball mills and extending the liner replacement cycle.

[0012] 2. The cleaning assembly uses an electric telescopic rod to push the cleaning plate back and forth, removing the iron impurities adsorbed on the surface of the electromagnet rod and the strong magnetic separator into a special collection box, thus avoiding the reduction of iron removal efficiency.

[0013] 3. The electromagnetic coil of the strong magnetic separator can adjust the magnetic field strength in real time according to the iron content of the material, which is more energy-efficient than the traditional permanent magnet separator while ensuring the iron removal effect; the variable frequency speed regulation function of the bidirectional belt conveyor can dynamically adjust the energy consumption according to the material flow rate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0016] Attached reference numerals: 1. Transfer hopper; 2. Bidirectional belt conveyor; 3. Strong magnetic separator; 4. Dust collector; 5. Air hood; 6. Pusher cleaning plate; 7. Discharge pipe; 8. Electromagnetic rod; 9. Electric telescopic rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] Example

[0019] This utility model provides an iron removal and material sorting device for material transportation. Through multi-component collaborative design, it achieves efficient iron removal, precise material sorting, and environmentally friendly operation. The specific structure is as follows:

[0020] Please refer to Figures 1-2 This device mainly consists of a transfer hopper 1, a bidirectional belt conveyor 2, a strong magnetic separator 3, a plate chain conveyor, an array of electromagnet bars 8, a dust removal component, and a cleaning component.

[0021] The transfer hopper 1 has an inverted frustum-shaped structure and is welded from Q235B steel plate. The inner wall is lined with a wear-resistant rubber layer for temporary storage of materials to be processed. A cylindrical discharge pipe 7 is welded to the center of its bottom. The axis of the discharge pipe 7 is aligned with the center of the feed end of the bidirectional belt conveyor 2. The pipe diameter is designed to be DN200-DN300 according to the material flow rate.

[0022] The bidirectional belt conveyor 2 is driven by a variable frequency speed control motor (power 5.5-7.5kW), and the belt material is polyester canvas belt with anti-slip pattern on the surface. Its feed end is located directly below the discharge pipe 7 of the transfer hopper 1. The belt running speed can be steplessly adjusted within the range of 0.8-1.5m / s by the assembled controller to adapt to the conveying needs of different materials.

[0023] The strong magnetic separator 3 is installed directly above the bidirectional belt conveyor 2 and is fixed by an H-shaped steel structure bracket. Its specific structure is as follows:

[0024] The outer layer is equipped with neodymium iron boron permanent magnets, using N52 grade magnets, arranged in a ring array according to the axial magnetization method, forming a basic magnetic field strength of 18000 Gauss.

[0025] Its inner layer contains an electromagnetic coil wound with hollow copper tubing. The number of coil turns is designed to be 1000-1500 turns according to the magnetic field adjustment requirements. It can provide an additional magnetic field of 0-5000 Gauss when connected to an external 0-50V adjustable DC power supply. The overall magnetic field strength can be continuously adjusted within the range of 18000-23000 Gauss to meet the iron removal requirements of materials with different iron content.

[0026] The plate chain conveyor is located below the discharge end of the bidirectional belt conveyor 2. It uses high-strength manganese steel chain plates and the conveying angle is adjustable from 0 to 30°. Its feed end is sealed to the discharge end of the bidirectional belt conveyor 2 through a guide chute. The guide chute is lined with wear-resistant plates to prevent material leakage and wear.

[0027] The installation bracket between the discharge pipe 7 and the bidirectional belt conveyor 2 features 12-16 electromagnet rods 8 evenly arranged along the material's falling trajectory. Each electromagnet rod 8 is fixed by an insulating ceramic bracket, with adjacent rods spaced 50-80mm apart, forming a grid-like adsorption area. The electromagnet rods 8 are powered by DC24V, and their surface magnetic field strength can reach 5000-8000 Gauss, effectively adsorbing small and fine iron impurities during the falling process.

[0028] The dust collection hood 5 is shaped like an inverted trumpet, with an opening larger than the top opening of the transfer hopper 1. It is made of galvanized steel sheet and is sealed to the top opening of the transfer hopper 1 via a flange. Inside the hood 5, a guide vane is installed to guide dust towards the center.

[0029] Among them, the dust collector selected is a pulse bag dust collector (handling air volume of 2000-3000 m³ / h).3 The dust collector is connected to the dust collection hood 5 via a galvanized steel pipe ( / h). The internal filter bags of the dust collector are made of PTFE membrane filter media.

[0030] Furthermore, the filter bags in the dust collector may be equipped with a high-frequency pulse back-flushing system as in the prior art, which uses 0.6-0.8MPa compressed air to perform pulse cleaning of the filter bags every 60 seconds, with a pulse width of 0.1-0.3 seconds.

[0031] The high-frequency pulse backflushing system is equipped with a 0.6-0.8MPa compressed air source and is controlled by a pulse valve to perform pulse cleaning of the filter bags every 60 seconds. The pulse width is 0.1-0.3 seconds to ensure that the dust on the surface of the filter bags is removed in time and to maintain the dust collection efficiency.

[0032] In the material cleaning assembly, the electric telescopic rod is a servo electric cylinder, which is fixed to the outer bottom of the transfer hopper 1 via an L-shaped bracket. Its piston rod axis is perpendicular to the plane of the electromagnet rod array 8.

[0033] The material pushing and cleaning plate 6 is made of stainless steel, and its dimensions match the coverage area of ​​the electromagnetic rods 8 array. The bottom surface of the cleaning plate is flush with the top surface of the electromagnetic rods 8, and the top surface is flush with the bottom surface of the strong magnetic separator 3, ensuring that iron debris deposits on the surfaces of the electromagnetic rods 8 and the strong magnetic separator 3 can be cleaned simultaneously during the extension and retraction process.

[0034] In some installation details, the transfer hopper 1 connects to the feed end of the bidirectional belt conveyor 2 via the bottom discharge pipe 7. The gap between the discharge pipe 7 and the feed end of the belt conveyor is sealed by a flexible sealing curtain (silicone material) to prevent dust from overflowing.

[0035] The strong magnetic separator 3 is fixed above the frame of the bidirectional belt conveyor 2 by a bracket. The height of the bracket can be adjusted by bolts to optimize the iron removal distance.

[0036] The mounting bracket of the electromagnet rod array 8 is welded and fixed to the bottom of the transfer hopper 1 to ensure stability under material impact. The power lines of each electromagnet rod 8 are collected through metal corrugated pipes to the junction box on the outside of the device.

[0037] The dust collection hood 5 is fixed to the upper opening of the transfer hopper 1 via a flange, and the air duct is connected to the air inlet of the dust collector by a quick-install clamp, which is convenient for disassembly and maintenance.

[0038] The fixed bracket of the electric telescopic rod is welded to the bottom steel plate of the transfer hopper 1, and the front end of the piston rod is hinged to the push cleaning plate 6 through a pin to ensure that the cleaning plate maintains planar movement during the extension and retraction process.

[0039] Specifically, the transfer hopper 1 is fixed on the steel structure support, and the drive motor of the bidirectional belt conveyor 2 has a power of 7.5kW and can achieve speed adjustment of 0.8-1.5m / s.

[0040] The strong magnetic separator 3 is installed above the conveyor belt. Its outer neodymium iron boron permanent magnet forms a basic magnetic field of 18,000 gauss, and the inner electromagnetic coil can provide an additional magnetic field of 3,000 gauss when connected to a 36V DC power supply, with an overall magnetic field strength of 21,000 gauss. There are 14 electromagnet rods 8 in total, which are evenly arranged below the discharge pipe 7 and fixed to the bottom of the transfer hopper by L-shaped mounting brackets 11.

[0041] The dust collection hood 5 of the dust removal component is connected to the dust collector 4 through the air duct. The filter bag of the dust collector is made of PTFE membrane material. The compressed air pressure of the pulse back-flushing system is set to 0.7MPa, and the dust is cleaned once every 60 seconds with a pulse width of 0.2 seconds.

[0042] The bottom surface of the material cleaning plate of the cleaning component is flush with the top of the electromagnet rod 8 (0-25mm away), and the top surface is flush with the bottom of the strong magnetic separator 3 (0-20mm away).

[0043] Workflow

[0044] 1. Material conveying: The loader unloads the material into the transfer hopper 1, and the material falls onto the belt of the bidirectional belt conveyor 2 through the discharge pipe 7. The belt conveys the material in the designated direction at a set speed (e.g., 1.2 m / s).

[0045] 2. Iron removal treatment: During the belt conveying process, the material first passes through the electromagnetic rod array, and fine iron impurities with a particle size ≤0.1mm are adsorbed; then it passes under the strong magnetic separator 3, where larger iron impurities are adsorbed by the high magnetic field and slide down the surface of the separator to the side collection tank.

[0046] 3. Material distribution operation: The bidirectional belt conveyor 2 can run in both directions to transport materials to the left or right plate chain conveyor 10, realizing the material distribution function. The amount of material distributed is precisely controlled by the belt speed and running time.

[0047] 4. Dust removal operation: The dust generated during the unloading process is collected by the dust collection hood 5 and enters the dust collector 4 through the air duct. The dust is intercepted by the filter bag, and the purified air is discharged by the fan. The filter bag is automatically cleaned by the pulse back-blowing system.

[0048] 5. Cleaning operation: The PLC control system starts the electric telescopic rod 9 at regular intervals (e.g., every 2 hours) to push the material cleaning plate 6 to move back and forth in the horizontal direction, removing iron impurities from the surface of the electromagnet rod 8 and the strong magnetic separator 3, which then fall into the bottom receiving box.

[0049] The working principle of this device is based on the synergistic effect of magnetic field adsorption, belt conveying, and gas-solid separation. The strong magnetic separator and the array of electromagnets form a gradient magnetic field. By utilizing the principle that ferromagnetic materials are subjected to forces in a magnetic field, the device can efficiently remove iron impurities of different particle sizes. The bidirectional belt conveyor changes the material conveying direction and flow rate through motor forward and reverse rotation and frequency conversion speed regulation, achieving precise material distribution. The dust removal component uses the negative pressure effect of the dust collector to suck in the dust and filter it through filter bags to achieve the purpose of dust removal. The cleaning component uses mechanical pushing to periodically remove the iron impurity accumulation on the surface of the iron removal component, maintaining the stability of the iron removal efficiency.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 material handling and iron removal / separation device, characterized in that, The system includes a transfer hopper, a bidirectional belt conveyor, a strong magnetic separator, and a plate chain conveyor. The transfer hopper is used to store materials and has a discharge pipe connected to its bottom, with the discharge aligned with the feed end of the bidirectional belt conveyor. The strong magnetic separator is installed above the bidirectional belt conveyor to remove iron impurities from the materials. The discharge end of the bidirectional belt conveyor is connected to the feed end of the plate chain conveyor to transport the materials to subsequent processing sections.

2. The iron removal and sorting device for material transportation according to claim 1, characterized in that: On the mounting bracket between the discharge pipe and the bidirectional belt conveyor, 12-16 electromagnet rods are evenly arranged along the material falling trajectory. Each electromagnet rod is fixed by an insulating ceramic bracket, and the distance between adjacent rods is 50-80mm, forming a grid-like adsorption area.

3. The iron removal and sorting device for material transportation according to claim 2, characterized in that: In the strong magnetic separator, neodymium iron boron permanent magnets are arranged on the outer layer with a magnetic field strength of 18,000 gauss, and electromagnetic coils are embedded in the inner layer to provide an adjustable magnetic field of 0-5,000 gauss. The overall magnetic field strength is continuously adjustable in the range of 18,000-23,000 gauss.

4. The iron removal and sorting device for material transportation according to claim 3, characterized in that: It also includes a dust removal assembly, which includes a dust collection hood and a vacuum cleaner. The dust collection hood is positioned above the transfer hopper and is connected to the vacuum cleaner via a pipe to collect dust using the negative pressure of the vacuum cleaner.

5. The iron removal and sorting device for material transportation according to claim 4, characterized in that: It also includes a cleaning assembly, which includes an electric telescopic rod installed at the bottom of the transfer hopper. The output end of the electric telescopic rod is connected to a pushing cleaning plate. The bottom surface of the pushing cleaning plate is flush with the top surface of the electromagnet rod, and the top surface of the pushing cleaning plate is flush with the bottom of the strong magnetic separator.

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