A magnetic separation device

Abstract

The utility model discloses a magnetic separation device belongs to the technical field of magnetic separator to solve the prior art, kitchen garbage because of the own characteristic usually contains moisture, part high viscosity component under the action of moisture can produce stronger adhesion, the garbage that adsorbed on the conveyer belt can be wrapped iron impurity, make iron impurity be covered by garbage layer, cannot effectively contact with the magnetic field of magnetic separation roller, further reduce the problem of screening efficiency, it includes the mounting bracket, and the inside of mounting bracket is along the length direction interval and is equipped with motor -driven drive roll and magnetic separation roller, and both are connected through the conveyer belt, and the mounting bracket is equipped with the casing, and the bottom of casing is penetrated and has the opening, and the rotation is connected in the shell and is driven by the driving arrangement driving shaft, and is equipped with a plurality of scrape plate that can touch the top of conveyer belt on the driving shaft. Scrape plate arc shaped end part and conveyer belt high adhesion, can reduce conveyer belt surface adhesive material residual rate, alleviate screening omission, and the casing is closed and can prevent external sundries interference scraping material.

Description

Technical Field

[0001] This utility model belongs to the field of magnetic separator technology, and specifically relates to a magnetic separation device. Background Technology

[0002] In the field of food waste treatment, the removal of iron impurities (such as fragments of discarded tableware and metal packaging) is a crucial step in the pretreatment stage. If iron impurities enter subsequent crushing, fermentation, or incineration equipment along with the waste, it may not only cause wear on the cutting edges of the equipment and jamming of transmission components, but may also generate harmful gases under high-temperature conditions, affecting the quality of the processed products and the safety of equipment operation. Therefore, the industry generally adopts a combination of "conveyor belt + magnetic separator" to separate and screen iron impurities. The existing screening scheme has the following structure and workflow: The device includes a conveyor belt and a magnetic separator roller coaxially mounted below the discharge end of the conveyor belt (the outer circumference of the magnetic separator roller is made of a strongly magnetic material, and the roller body can rotate at a constant speed around its own axis); During operation, kitchen waste is fed into the conveyor belt from the feed end, and after being conveyed upward to the discharge end by the conveyor belt, it falls into the waste collection bin below under the action of gravity in a free fall state; During this process, the waste flow will pass through the magnetic field coverage area of ​​the magnetic separator roller, and the iron impurities in the waste will be separated from the waste flow and adsorbed on the outer circumference of the magnetic separator roller due to the attraction of the magnetic field. With the rotation of the magnetic separator roller, it is transported to the "demagnetization zone" where the magnetic field effect is weaker, and then, under the assistance of gravity and scraper, it will be separated from the magnetic separator roller and fall into a special iron impurity collection box, thereby completing the separation of iron impurities from kitchen waste. However, existing technologies have significant drawbacks in practical applications: kitchen waste usually contains moisture due to its own characteristics, and some highly viscous components will have strong adhesion under the action of moisture. Iron impurities may be wrapped in the waste adsorbed on the conveyor belt, so that the iron impurities are covered by the waste layer and cannot effectively contact the magnetic field of the magnetic separator roller, further reducing the screening efficiency. Utility Model Content

[0003] In view of this, the present invention provides a magnetic separation device to solve the problem in the prior art that kitchen waste usually contains moisture due to its own characteristics. Some highly viscous components will have strong adhesion under the action of moisture. Iron impurities may be wrapped in the waste adsorbed on the conveyor belt, so that the iron impurities are covered by the waste layer and cannot effectively contact the magnetic field of the magnetic separation roller, which further reduces the screening efficiency.

[0004] The technical solution adopted in this utility model is as follows: A magnetic separator includes a mounting frame. An active roller and a magnetic separator are spaced apart along the length of the inner side of the mounting frame. The active roller is driven by a motor, and the active roller and the magnetic separator are connected by a conveyor belt. A housing is provided on the mounting frame, with an opening at the bottom of the housing. A rotating shaft is rotatably connected inside the housing, driven by a drive device, and the rotating shaft is provided with several scrapers that can contact the top of the conveyor belt.

[0005] In this technical solution, it should be noted that the mounting frame, as the basic support structure of the device, bears all components such as the drive roller, magnetic separator, and housing, ensuring the overall structural stability. The drive roller, driven by a motor, provides power to drive the conveyor belt in a cyclical motion, serving as the power input component for the conveyor belt. The motor provides rotational power to the drive roller and controls the speed of the conveyor belt. The magnetic separator has a strong magnetic field on its outer periphery, used to adsorb iron impurities in the material conveyed by the conveyor belt, achieving the separation of iron and non-ferrous materials. The conveyor belt connects the drive roller and the magnetic separator, transporting material from one side of the drive roller to the other side of the magnetic separator through cyclical motion, serving as the carrier for material transport. The housing encloses the rotating shaft and scraper, preventing external debris from interfering with the scraper's operation. The opening allows the scraper inside the housing to pass through the bottom of the housing and contact the top of the conveyor belt, ensuring that the scraper can act on the surface of the conveyor belt. The rotating shaft drives the scraper to rotate synchronously, serving as the carrier for the scraper's installation and rotation. The drive device provides power for the rotation of the rotating shaft. The end of the scraper contacts the surface of the conveyor belt, and during rotation, it can scrape off the material adhering to the conveyor belt, achieving material stripping. Working Principle: After the motor is powered on, it drives the drive roller to rotate. The drive roller uses the friction between its anti-slip texture and the conveyor belt to drive the conveyor belt to circulate. Material is fed into the conveyor belt from the side closest to the drive roller and moves towards the magnetic separator roller. Simultaneously, the drive unit drives a rotating shaft inside the housing to rotate. The scraper on the shaft moves in a circular motion with the shaft. The scraper's end extends through an opening at the bottom of the housing and makes close contact with the top surface of the moving conveyor belt. During rotation, it scrapes off the material adhering to the conveyor belt surface. The stripped material continues to move towards the magnetic separator roller with the conveyor belt or falls into the pre-set collection structure below under gravity. Effect: The arc-shaped end of the scraper and its high-fit design with the conveyor belt effectively reduce the residual rate of material adhering to the conveyor belt surface, alleviating the screening omission problem caused by material adsorption on the conveyor belt in existing technologies. The enclosed structure of the housing prevents external debris from interfering with the scraping process.

[0006] Preferably, the mounting frame is also provided with a fan hood, the air outlet of the fan hood faces the conveyor belt, and the fan hood is connected to a hot air blower, which is located on one side of the mounting frame.

[0007] In this technical solution, it should be noted that the fan hood has a trumpet-shaped structure, with a long, narrow air outlet whose length matches the width of the conveyor belt. This guides the hot air output from the hot air blower precisely onto the material on the conveyor belt surface, preventing heat loss due to air diffusion and controlling the range of hot air action. The hot air blower generates high-temperature hot air, which is delivered to the fan hood through pipes to reduce the moisture content of the material and decrease its stickiness. Working principle: After the hot air blower starts, it generates high-temperature hot air, which is delivered to the fan hood through connecting pipes. The guide plates inside the fan hood evenly distribute the hot air to the long, narrow air outlet, directing it towards the material on the moving conveyor belt surface. Upon contact with the material surface, the hot air evaporates the moisture through heat conduction and convection, while simultaneously slightly heating the conveyor belt surface, reducing the adhesion between the material and the conveyor belt. Effect: The hot air generated by the hot air blower effectively reduces the moisture content of the material, significantly reducing the probability of material sticking to the conveyor belt due to moisture. The long, narrow air outlet of the fan hood ensures that the hot air covers the entire width of the conveyor belt, preventing areas where material remains undehydrated. The slight heating of the conveyor belt by hot air further reduces material adhesion, forming a double protection with the scraping action of the scraper.

[0008] Preferably, the air outlet of the hot air blower is connected to a first pipe, the end of the first pipe away from the hot air blower is connected to the housing, and the connection between the first pipe and the housing faces one of the scrapers. The hot air blower is also connected to a second pipe, the end of the second pipe away from the housing is connected to the fan cover.

[0009] In this technical solution, it should be noted that the first pipe connects the hot air blower to the housing, guiding the hot air generated by the blower into the housing. The connection point between the first pipe and the housing is close to the scraper's rotation trajectory, allowing the hot air to directly impact the scraper upon ejection, using the kinetic energy of the hot air to drive its rotation. The second pipe connects the housing to the hood, transporting the hot air from the housing after power output to the hood, achieving secondary utilization of the hot air. The hot air blower serves as both a heat source for material dehydration and a power source for scraper rotation, eliminating the need for a separate drive motor for the scrapers and simplifying the device's power system. Working principle: After the hot air blower starts, the high-temperature hot air enters the housing through the first pipe. The outlet of the first pipe faces directly towards the side of one of the scrapers inside the housing. The hot air impacts the side of the scraper, generating a horizontal thrust. This thrust is converted into rotational torque on the shaft, causing it to rotate. This, in turn, causes all scrapers to move synchronously in a circular motion with the shaft, achieving the scraping action on the conveyor belt. After power output, the hot air collects inside the housing and is then transported to the air hood through a second pipe. Once inside the hood, the hot air is distributed by guide plates and blown from the outlet onto the material on the conveyor belt surface, dehydrating the material. Effect: By using hot air to drive the scraper rotation, no additional scraper drive motor is needed. The secondary hot air effectively reduces the material's moisture content. Combined with the scraping action of the scraper, it further reduces the probability of material sticking to the conveyor belt, facilitating efficient adsorption of iron impurities by the subsequent magnetic separator rollers and improving screening efficiency.

[0010] Preferably, the shroud is located between the housing and the magnetic separator roller.

[0011] In this technical solution, it should be noted that the placement of the hood allows for a continuous processing flow of "scraping-dewatering-magnetic separation," preventing the material from sticking to the conveyor belt again after scraping and before magnetic separation, which would cause iron impurities to be trapped. After this dual treatment, the material has extremely low viscosity when it enters the magnetic separation stage, making it less likely to adhere to the surface of the magnetic separator roller. This ensures that the magnetic field of the magnetic separator roller can directly act on the iron impurities, improving the adsorption rate of iron impurities.

[0012] Preferably, the mounting bracket is provided with a limiting groove, a movable seat is slidably connected in the limiting groove, the bottom of the movable seat is connected to the bottom of the limiting groove through an elastic element, and the housing is mounted on the movable seat.

[0013] In this technical solution, it should be noted that when the surface height of the conveyor belt fluctuates due to changes in material load or slight deformation, the contact pressure between the conveyor belt and the scraper will change. If the conveyor belt surface is convex, it generates an upward thrust on the scraper, which is transmitted to the movable seat, causing it to slide downward along the guide structure in the limiting groove. The elastic element is compressed, generating an upward rebound force. If the conveyor belt surface is concave, the pressure between the scraper and the conveyor belt decreases, and the rebound force of the elastic element pushes the movable seat upward, bringing the scraper closer to the conveyor belt surface. Through the expansion and contraction of the elastic element and the sliding of the movable seat, the fluctuation in the surface height of the conveyor belt is compensated in real time, ensuring that the contact pressure between the scraper and the conveyor belt surface remains within a reasonable range.

[0014] Preferably, the elastic element is a spring.

[0015] It should be noted that in this technical solution, using a spring as the elastic element has higher elastic stability and service life compared to other elastic components, and is less prone to aging during long-term use.

[0016] Preferably, the mounting frame is further provided with a bracket, the bracket is provided with a housing, the top of the housing is provided with a feed port, the bottom of the housing is provided with a discharge port, and the discharge port is located above the drive roller.

[0017] In this technical solution, it should be noted that the external feeding equipment conveys the material to the inlet at the top of the outer shell. Under the action of gravity, the material enters the interior of the outer shell and flows downward along the smooth inner wall. Because the outer shell is funnel-shaped, the material is gradually collected at the outlet at the bottom. After being discharged from the outlet, the material falls directly onto the center of the conveyor belt near the drive roller and moves towards the magnetic separator roller with the conveyor belt.

[0018] Preferably, a collection hopper is provided below the mounting frame, and the collection hopper is located on one side of the magnetic separator roller.

[0019] In this technical solution, it should be noted that as the material moves along the conveyor belt to the magnetic separator, iron impurities in the material are detached from the material flow under the influence of the strong magnetic field of the magnetic separator and adsorbed onto the surface of the magnetic separator. The magnetic separator continues to rotate, transporting the adsorbed iron impurities from the side near the discharge end of the conveyor belt to the side away from the material. When the iron impurities move to this area, due to the decrease in magnetic field strength, they lose the magnetic attraction force and fall off the surface of the magnetic separator under the action of gravity, falling into the collection hopper below.

[0020] Preferably, the bottom of the mounting bracket is provided with support legs, and two adjacent support legs are connected by a connecting rod.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. In this utility model, the arc-shaped end of the scraper is designed to fit the conveyor belt with a high degree of fit, which can effectively reduce the residual rate of the material adhering to the surface of the conveyor belt and alleviate the screening omission problem caused by the material adsorbing the conveyor belt in the prior art. The closed structure of the shell prevents external debris from interfering with the scraping process. 2. In this utility model, hot air is used to drive the scraper to rotate, eliminating the need for an additional scraper drive motor. The secondary hot air can still effectively reduce the moisture content of the material. Combined with the scraping action of the scraper, the probability of the material sticking to the conveyor belt is further reduced, which helps the subsequent magnetic separation roller to efficiently adsorb iron impurities and improve the screening efficiency. Attached Figure Description

[0022] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the three-dimensional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the conveyor belt of this utility model; Figure 4 This is a three-dimensional structural diagram of the mounting bracket after it has been cut and its relationship with the housing of this utility model. Figure 5 This is a cross-sectional perspective view of the shell of this utility model. Wherein: 100-mounting frame, 101-conveyor belt, 102-support leg, 103-connecting rod, 104-drive roller, 105-magnetic separator roller, 200-shell, 201-pipe, 202-second pipe, 203-air hood, 204-rotating shaft, 205-scraper, 206-opening, 300-outer shell, 301-feed inlet, 302-discharge outlet, 303-support, 400-collecting hopper, 500-moving seat, 501-elastic element, 502-limiting groove. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Example

[0029] like Figures 1-5As shown in the figure, a magnetic separation device is disclosed in this embodiment of the present invention, including a mounting frame 100. The inner side of the mounting frame 100 is provided with a drive roller 104 and a magnetic separation roller 105 spaced apart along its length. The drive roller 104 is driven by a motor, and the drive roller 104 and the magnetic separation roller 105 are connected by a conveyor belt 101. The mounting frame 100 is provided with a housing 200. The bottom of the housing 200 is provided with an opening 206, and a rotating shaft 204 is rotatably connected inside the housing 200. The rotating shaft 204 is driven by a drive device, and the rotating shaft 204 is provided with a plurality of scrapers 205 that can contact the top of the conveyor belt 101. It should be noted that the mounting frame 100, as the basic support structure of the device, bears all components such as the drive roller 104, magnetic separator 105, and housing 200, ensuring the stability of the overall structure. The drive roller 104, driven by a motor, provides power to drive the conveyor belt 101 in a cyclical motion, serving as the power input component for the conveyor belt 101. The motor provides rotational power to the drive roller 104 and controls the operating speed of the conveyor belt 101. The magnetic separator 105 has a strong magnetic field on its outer periphery, used to adsorb iron impurities in the material conveyed by the conveyor belt 101, achieving the separation of ferrous and non-ferrous materials. The conveyor belt 101 connects the drive roller 104 and the magnetic separator 105, and through cyclical motion, it carries the material from the drive roller... The material is conveyed from one side of the 104 roller to the other side of the magnetic separator 105, serving as the carrier for material transport. The housing 200 encloses the rotating shaft 204 and the scraper 205, preventing external debris from interfering with the operation of the scraper 205. The opening 206 allows the scraper 205 inside the housing 200 to pass through the bottom of the housing 200 and contact the top of the conveyor belt 101, ensuring that the scraper 205 can act on the surface of the conveyor belt 101. The rotating shaft 204 drives the scraper 205 to rotate synchronously, serving as the carrier for the installation and rotation of the scraper 205. The drive device provides power for the rotation of the rotating shaft 204. The end of the scraper 205 contacts the surface of the conveyor belt 101, and during rotation, it can scrape off the material adhering to the conveyor belt 101, achieving material stripping. Working principle: After the motor is powered on and started, it drives the drive roller 104 to rotate. The drive roller 104 uses the friction between its surface anti-slip texture and the conveyor belt 101 to drive the conveyor belt 101 to circulate. After the material is fed into the conveyor belt 101 from the side near the drive roller 104, it moves with the conveyor belt 101 toward the magnetic separator roller 105. At the same time, the drive device drives the rotating shaft 204 inside the housing 200 to rotate. The scraper 205 on the rotating shaft 204 moves in a circular motion with the rotating shaft 204. The end of the scraper 205 extends through the bottom opening 206 of the housing 200 and comes into close contact with the top surface of the moving conveyor belt 101. During the rotation, the scraper removes the material adhering to the surface of the conveyor belt 101. The stripped material continues to move with the conveyor belt 101 toward the magnetic separator roller 105 or falls into the preset collection structure below under the action of gravity.Effect: The arc-shaped end of the scraper 205 is designed to fit the conveyor belt 101 closely, which can effectively reduce the residual rate of the material adhering to the surface of the conveyor belt 101 and alleviate the screening omission problem caused by the material adhering to the conveyor belt 101 in the prior art. The closed structure of the shell 200 prevents external debris from interfering with the scraping process.

[0030] like Figure 1 As shown, in this embodiment, the mounting frame 100 is also equipped with a fan hood 203. The air outlet of the fan hood 203 faces the conveyor belt 101, and the fan hood 203 is connected to a hot air blower (not shown in the figure). The hot air blower is located on one side of the mounting frame 100. It should be noted that the fan hood 203 has a trumpet-shaped structure, and the air outlet is elongated, with a length consistent with the width of the conveyor belt 101. This guides the hot air output by the hot air blower precisely onto the material on the surface of the conveyor belt 101, avoiding the diffusion of hot air and wasting heat energy, while controlling the range of hot air action. The hot air blower (not shown in the figure) can generate high-temperature hot air, which is transported to the fan hood 203 through the pipe 201 to reduce the moisture in the material and reduce the stickiness of the material. Working principle: After the hot air blower is started, it generates high-temperature hot air. The hot air is transported to the fan hood 203 through the connecting pipe 201. The guide plate inside the fan hood 203 evenly distributes the hot air to the elongated air outlet, so that the hot air is blown onto the material on the surface of the moving conveyor belt 101. Hot air comes into contact with the material surface, evaporating moisture through heat conduction and convection. Simultaneously, it slightly heats the surface of the conveyor belt 101, reducing the adhesion between the material and the conveyor belt 101. Effect: The hot air generated by the hot air blower effectively reduces the moisture content of the material, significantly reducing the probability of material sticking to the conveyor belt 101 due to moisture. The elongated air outlet of the air hood 203 ensures that hot air covers the entire width of the conveyor belt 101, preventing localized areas where material has not been dehydrated. The slight heating of the conveyor belt 101 by the hot air further reduces material adhesion, forming a double protection with the scraping action of the scraper 205.

[0031] like Figure 1As shown, in this embodiment, the outlet of the hot air blower is connected to a first pipe 201. The end of the first pipe 201 away from the hot air blower is connected to the housing 200, and the connection between the first pipe 201 and the housing 200 faces one of the scrapers 205. A second pipe 202 is connected to the outlet, and the end of the second pipe 202 away from the housing 200 is connected to the fan shroud 203. It should be noted that the first pipe 201 connects the hot air blower and the housing 200, guiding the hot air generated by the hot air blower into the housing 200. Its connection with the housing 200 is close to the rotation trajectory of the scraper 205, so that the hot air can directly impact the scraper 205 when it is ejected, using the kinetic energy of the hot air to drive the scraper 205 to rotate. The second pipe 202 connects the housing 200 and the fan shroud 203, delivering the hot air from the housing 200 after power output to the fan shroud 203, realizing the secondary utilization of the hot air. The hot air blower serves as both a heat source for material dehydration and a power source for the rotation of scraper 205, eliminating the need for an independent drive motor for scraper 205 and simplifying the device's power system. Working principle: After the hot air blower starts, the high-temperature hot air it generates enters the housing 200 through the first pipe 201. The outlet of the first pipe 201 faces directly towards the side of one of the scrapers 205 inside the housing 200. The hot air impacts the side of the scraper 205, generating a horizontal thrust. This thrust is converted into rotational torque on the rotating shaft 204, causing the shaft 204 to rotate. This, in turn, causes all scrapers 205 to move synchronously with the shaft 204, achieving the scraping action on the conveyor belt 101. After completing the power output, the hot air gathers inside the housing 200 and is then transported to the air hood 203 through the second pipe 202. After entering the air hood 203, the hot air is distributed by the guide plate and blown from the outlet onto the material on the surface of the conveyor belt 101, dehydrating the material. Effect: By using hot air to drive the scraper 205 to rotate, there is no need to set up an additional scraper 205 drive motor. The secondary hot air can still effectively reduce the moisture content of the material. Combined with the scraping action of the scraper 205, it further reduces the probability of material sticking to the conveyor belt 101, which helps the subsequent magnetic separator 105 to efficiently adsorb iron impurities and improve screening efficiency.

[0032] like Figure 1 As shown, in this embodiment, the hood 203 is located between the housing 200 and the magnetic separator roller 105. It should be noted that the positioning of the hood 203 allows the material to undergo a continuous "scraping-dehydration-magnetic separation" process, preventing the material from adhering to the conveyor belt 101 again after scraping and before magnetic separation, thus avoiding the encapsulation of iron impurities. After this dual treatment, the material has extremely low viscosity when entering the magnetic separation stage, making it less likely to adhere to the surface of the magnetic separator roller 105. This ensures that the magnetic field of the magnetic separator roller 105 can directly act on the iron impurities, improving the iron impurity adsorption rate.

[0033] like Figure 4As shown, in this embodiment, the mounting frame 100 is provided with a limiting groove 502, and a movable seat 500 is slidably connected in the limiting groove 502. The bottom of the movable seat 500 is connected to the bottom of the limiting groove 502 through an elastic element 501, and the housing 200 is mounted on the movable seat 500. It should be noted that when the surface height of the conveyor belt 101 fluctuates due to changes in material load or slight deformation, the contact pressure between the conveyor belt 101 and the scraper 205 will change. If the surface of the conveyor belt 101 is convex, it generates an upward thrust on the scraper 205. The thrust is transmitted to the movable seat 500, causing the movable seat 500 to slide downward along the guide structure in the limiting groove 502. The elastic element 501 is compressed, generating an upward rebound force. If the surface of the conveyor belt 101 is concave, the pressure between the scraper 205 and the conveyor belt 101 decreases, and the rebound force of the elastic element 501 pushes the movable seat 500 upward, causing the scraper 205 to approach the surface of the conveyor belt 101. By extending and retracting the elastic element 501 and sliding the movable seat 500, the height fluctuation of the conveyor belt 101 surface is compensated in real time, ensuring that the contact pressure between the scraper 205 and the surface of the conveyor belt 101 is kept within a reasonable range.

[0034] like Figure 4 As shown, in this embodiment, the elastic element 501 is a spring. It should be noted that using a spring as the elastic element 501 provides higher elastic stability and service life compared to other elastic components, and it is less prone to aging during long-term use.

[0035] like Figure 1 As shown, in this embodiment, the mounting frame 100 is further provided with a bracket 303, and the bracket 303 is provided with a housing 300. The top of the housing 300 has a feed inlet 301, and the bottom of the housing 300 has a discharge outlet 302, which is located above the drive roller 104. It should be noted that the external feeding device conveys the material to the feed inlet 301 at the top of the housing 300. Under the action of gravity, the material enters the interior of the housing 300 and flows downward along the smooth inner wall of the housing 300. Because the housing 300 is funnel-shaped, the material is gradually collected at the discharge outlet 302 at the bottom. After the material is discharged from the discharge outlet 302, it falls directly onto the center position of the conveyor belt 101 near the drive roller 104 and moves with the conveyor belt 101 towards the magnetic separator roller 105.

[0036] like Figure 2As shown, in this embodiment, a collection hopper 400 is provided below the mounting frame 100, and the collection hopper 400 is located on one side of the magnetic separator roller 105. It should be noted that when the material moves to the magnetic separator roller 105 along with the conveyor belt 101, iron impurities in the material are detached from the material flow under the strong magnetic field of the magnetic separator roller 105 and adsorbed onto the surface of the magnetic separator roller 105. The magnetic separator roller 105 continues to rotate, transporting the adsorbed iron impurities from the side near the discharge end of the conveyor belt 101 to the side away from the material. When the iron impurities move to this area, due to the decrease in magnetic field strength, they lose the magnetic field attraction and fall off the surface of the magnetic separator roller 105 under the action of gravity, falling into the collection hopper 400 below.

[0037] like Figure 1 As shown, in this embodiment, the bottom of the mounting bracket 100 is provided with a support leg 102, and two adjacent support legs 102 are connected by a connecting rod 103.

[0038] The working principle of this utility model is as follows: External equipment pours material into the inlet 301 at the top of the outer casing 300. Next, the motor drives the drive roller 104 to rotate, which in turn drives the conveyor belt 101 in a cyclical motion, feeding the material towards the magnetic separator roller 105. During feeding, the rotating shaft 204 inside the housing 200 rotates, causing the scraper 205 to extend from the bottom opening 206 of the housing 200, scraping off the material adhering to the surface of the conveyor belt 101 and reducing adhesion. At the same time, a hot air blower blows hot air into the housing 200 through the first pipe 201, pushing the scraper 205 to rotate; then, it blows hot air through the second pipe 202 to the air hood 203, which evenly blows the hot air onto the material on the conveyor belt 101, drying off some of the moisture and reducing the possibility of the material sticking to the conveyor belt 101. Finally, when the material reaches the magnetic separator 105, the strong magnetic field of the magnetic separator 105 attracts the iron impurities inside and carries them to a place with a weak magnetic field. The iron impurities fall down and fall into the collection hopper 400 below. The material without iron impurities falls from the end of the conveyor belt 101 to another collection point, completing the separation of iron impurities and material.

[0039] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0040] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those 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 is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic separation device, characterized in that, The system includes a mounting frame (100), on which an active roller (104) and a magnetic separator (105) are spaced apart along its length. The active roller (104) is driven by a motor, and the active roller (104) and the magnetic separator (105) are connected by a conveyor belt (101). The mounting bracket (100) is provided with a housing (200), the bottom of the housing (200) is provided with an opening (206), and a rotating shaft (204) is rotatably connected inside the housing (200). The rotating shaft (204) is driven by a driving device, and the rotating shaft (204) is provided with a plurality of scrapers (205) that can contact the top of the conveyor belt (101).

2. The magnetic separator according to claim 1, characterized in that, The mounting frame (100) is also provided with a fan hood (203), the air outlet of the fan hood (203) faces the conveyor belt (101), and the fan hood (203) is connected to a hot air blower, which is located on one side of the mounting frame (100).

3. A magnetic separator according to claim 2, characterized in that, The hot air blower has a first pipe (201) connected to its outlet end. The end of the first pipe (201) away from the hot air blower is connected to the housing (200), and the connection between the first pipe (201) and the housing (200) faces one of the scrapers (205). The hot air blower also has a second pipe (202) connected to its outlet end. The end of the second pipe (202) away from the housing (200) is connected to the fan cover (203).

4. A magnetic separator according to claim 3, characterized in that, The shroud (203) is located between the housing (200) and the magnetic separator (105).

5. A magnetic separator according to claim 1, characterized in that, The mounting bracket (100) is provided with a limiting groove (502), and a movable seat (500) is slidably connected in the limiting groove (502). The bottom of the movable seat (500) is connected to the bottom of the limiting groove (502) through an elastic element (501), and the housing (200) is mounted on the movable seat (500).

6. A magnetic separator according to claim 5, characterized in that, The elastic element (501) is a spring.

7. A magnetic separator according to claim 1, characterized in that, The mounting bracket (100) is also provided with a support (303), and the support (303) is provided with a housing (300). The top of the housing (300) has a feed inlet (301), and the bottom of the housing (300) has a discharge outlet (302). The discharge outlet (302) is located above the drive roller (104).

8. A magnetic separator according to claim 1, characterized in that, A collection hopper (400) is provided below the mounting frame (100), and the collection hopper (400) is located on one side of the magnetic separation roller (105).

9. A magnetic separator according to claim 1, characterized in that, The mounting bracket (100) has a support leg (102) at its bottom, and two adjacent support legs (102) are connected by a connecting rod (103).

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