A high-efficiency rice separation magnetic separator

Abstract

This utility model provides a high-efficiency separating type magnetic separator for rice, relating to the technical field of rice magnetic separators. It includes a frame, with a first transmission component mounted on top of the frame. A second transmission component is arranged below one side of the first transmission component. A housing is fixed to the top of the frame on the other side of the first transmission component. The top of the housing is connected to a feed hopper, which contains multiple partitions forming multiple chambers. A waste hopper is correspondingly positioned below the first and second transmission components, and a cleaning component is installed inside the waste hopper. The stepped arrangement of the first and second transmission components forms a dual magnetic separation path. During the gradual fall of the rice, the magnetic fields of the first and second magnetic rollers work synergistically to adsorb metal impurities in layers, significantly improving separation efficiency and impurity removal rate, especially with superior secondary adsorption effect on small metal particles.

Description

Technical Field

[0001] This utility model relates to the field of rice magnetic separator technology, and in particular to a high-efficiency separating rice magnetic separator. Background Technology

[0002] Rice magnetic separators are mainly used to remove ferromagnetic metal impurities (such as iron filings and steel slag) from rice grains, so as to improve the purity of the grain, ensure the safety of processing equipment, and meet food safety standards.

[0003] The conveyor belt magnetic separator uses a strong magnetic field (1000-10000 Gauss) generated by a magnetic drum to adsorb ferromagnetic impurities. Material is evenly distributed on the conveyor belt through the feed hopper. Upon entering the magnetic field area, magnetic impurities are adsorbed onto the surface of the magnetic drum, while non-magnetic material continues to the outlet. The magnetic drum is driven by a speed-regulating motor, which, through a transmission device, drives the conveyor belt and magnetic drum to operate synchronously, ensuring continuous material transport. When the magnetic drum, which has adsorbed magnetic impurities, rotates to the non-magnetic field area, the impurities fall into the waste hopper, achieving separation from the rice.

[0004] Existing rice magnetic separators typically only have a single magnetic roller and conveyor belt, resulting in a limited magnetic field coverage. This makes it difficult to completely separate metallic impurities from the rice during a single transport, especially as the adsorption capacity for small magnetic particles (such as iron filings and iron oxide) is insufficient, leading to a risk of secondary contamination even after sorting. Furthermore, the feed hopper lacks a diversion structure, causing the rice to accumulate and fall directly onto the conveyor belt, which can easily lead to localized material overload or blockage. This results in uneven material layer thickness in the magnetic roller adsorption area, with some impurities remaining because they are not fully captured by the magnetic field. Therefore, we propose a high-efficiency separation-type rice magnetic separator. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency separating magnetic separator for rice grains to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency separating type magnetic separator for rice includes a frame, a first transmission component mounted on the top of the frame, a second transmission component arranged below one side of the first transmission component, a housing fixed on the top of the frame on the other side of the first transmission component, the top of the housing connected to a feed hopper, the feed hopper containing multiple partitions forming multiple chambers, a waste hopper correspondingly positioned below the first and second transmission components, a cleaning component installed in the waste hopper, a control panel on the other side of the front of the frame, and a material guiding channel inside the housing, the material guiding channel integrating a material guiding component.

[0008] As a preferred embodiment of this utility model, a discharge port is provided below the second transmission component on one side of the frame.

[0009] As a preferred embodiment of the present invention, the first transmission component includes a plurality of first rotating rollers and a first magnetic roller arranged in parallel, a first drive motor is mounted on the front of the frame, and a first conveyor belt is provided on the first rotating rollers and the first magnetic roller.

[0010] As a preferred embodiment of this utility model, the output end of the first drive motor is connected to the first magnetic roller, and the first rotating roller and the first magnetic roller are synchronously linked by a belt.

[0011] As a preferred embodiment of this utility model, the second transmission component includes a plurality of second rotating rollers and second magnetic rollers arranged in parallel, a second drive motor is installed on one side of the front of the frame, and a second conveyor belt is provided on the second rotating rollers and the second magnetic rollers.

[0012] As a preferred embodiment of this utility model, the output end of the second drive motor is connected to a second magnetic roller, and the second rotating roller and the second magnetic roller are synchronously linked by a belt.

[0013] As a preferred embodiment of this utility model, the cleaning component includes a fixed frame fixed inside the waste hopper, a protective shell installed on the top of the fixed frame, an electric push rod inside the protective shell, and a cleaning brush connected to the telescopic end of the electric push rod.

[0014] As a preferred embodiment of this utility model, the material guiding assembly includes a rotating shaft that passes through the material guiding channel, an opening and closing plate is fixed on the rotating shaft, one end of the rotating shaft is connected to a third drive motor, and a position sensor is installed at the other end. A pressure sensor is embedded in the opening and closing plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, a dual magnetic separation path is formed by the stepped layout of the first transmission component and the second transmission component. During the step-by-step falling of rice, the magnetic fields of the first magnetic roller and the second magnetic roller work together to adsorb metal impurities in layers, which significantly improves the sorting efficiency and impurity removal rate, especially the secondary adsorption effect on small metal particles.

[0017] 2. In this utility model, multiple partitions in the feed hopper form multiple diversion chambers, effectively dispersing the accumulation of rice. Combined with the dynamic adjustment function of the opening and closing plate of the material guiding component, the flow rate is monitored in real time by the pressure sensor and the opening and closing angle is adjusted by the third drive motor to ensure that the rice is evenly fed to the first transmission component along the material guiding channel, improving the uniformity of material distribution, avoiding the decrease in magnetic separation efficiency or material blockage caused by local overload, and allowing the rice to naturally stratify during the magnetic separation process, further optimizing the impurity adsorption effect.

[0018] 3. In this utility model, the electric push rod of the cleaning component in the waste hopper drives the cleaning brush to adaptively adjust its height, fit the surface of the conveyor belt, and scrape off residual magnetic impurities and sticky materials in real time, ensuring that the surface of the conveyor belt is clean, avoiding secondary contamination of the rice by impurities, making the magnetic roller adsorption efficiency continuously stable, reducing the frequency of manual cleaning, and reducing the labor intensity of workers. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a high-efficiency separating type rice magnetic separator provided by this utility model;

[0020] Figure 2 A schematic diagram of the internal structure of the frame of a high-efficiency separating rice magnetic separator provided by this utility model;

[0021] Figure 3 A schematic diagram of the internal structure of the feed hopper of a high-efficiency separating rice magnetic separator provided by this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of the A-zone structure of a high-efficiency separating rice magnetic separator provided by this utility model.

[0023] Legend: 1. Frame; 2. First transmission assembly; 201. First rotating roller; 202. First magnetic roller; 203. First drive motor; 204. First conveyor belt; 3. Second transmission assembly; 301. Second rotating roller; 302. Second magnetic roller; 303. Second drive motor; 304. Second conveyor belt; 4. Housing; 5. Feed hopper; 501. Partition plate; 502. Chamber; 6. Waste hopper; 7. Cleaning assembly; 701. Fixing frame; 702. Protective housing; 703. Electric push rod; 7031. Cleaning brush; 8. Control panel; 9. Guide channel; 10. Guide assembly; 1011. Rotating shaft; 1012. Opening and closing plate; 1013. Third drive motor; 1014. Position sensor; 1015. Pressure sensor; 11. Discharge port. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1

[0029] like Figure 1-4As shown, this utility model provides a technical solution: a high-efficiency separating type rice magnetic separator, including a frame 1, a first transmission component 2 installed on the top of the frame 1, a second transmission component 3 arranged below one side of the first transmission component 2, and a discharge port 11 located below the second transmission component 3 on one side of the frame 1. The first transmission component 2 includes a plurality of parallel first rotating rollers 201 and first magnetic rollers 202. A first drive motor 203 is installed on the front of the frame 1. A first conveyor belt 204 is arranged on the first rotating rollers 201 and the first magnetic rollers 202. The output end of 203 is connected to a first magnetic roller 202. The first rotating roller 201 and the first magnetic roller 202 are synchronously linked by a belt. The second transmission component 3 includes a plurality of second rotating rollers 301 and second magnetic rollers 302 arranged in parallel. A second drive motor 303 is installed on one side of the front of the frame 1. A second conveyor belt 304 is provided on the second rotating rollers 301 and the second magnetic rollers 302. The output end of the second drive motor 303 is connected to a second magnetic roller 302. The second rotating rollers 301 and the second magnetic rollers 302 are synchronously linked by a belt.

[0030] The first transmission component 2 and the second transmission component 3, through the parallel arrangement of the first magnetic roller 202 and the second magnetic roller 302, combined with the continuous transmission of the first conveyor belt 204 and the second conveyor belt 304, form a dual magnetic separation path. Metal impurities in the rice are adsorbed step by step, significantly improving the sorting efficiency and impurity removal rate. The first drive motor 203 and the second drive motor 303 independently control the rotation speed of the first magnetic roller 202 and the second magnetic roller 302, respectively. By adjusting the running speed of the conveyor belt, they can adapt to the high / low flow rice sorting requirements. The first rotating roller 201 and the first magnetic roller 202 are synchronized by a belt. The system is interconnected to ensure the smooth operation of the conveyor belt. The synchronized design of the second transmission component 3 ensures the continuity and stability of rice sorting and reduces the risk of material blockage. The second transmission component 3, located below the first transmission component 2, forms a stepped sorting path. Combined with the magnetic field coverage of the magnetic rollers, it achieves layered screening of rice and directional adsorption of impurities, improving sorting efficiency. The discharge port 11 ensures rapid discharge of sorted rice. The waste hopper 6 is positioned below the magnetic rollers of both the first and second transmission components 2 and 3. Magnetic impurities, after being detached by the conveyor belt, fall directly into the waste hopper 6. The discharge port 11 ensures rapid discharge of sorted rice.

[0031] Waste hoppers 6 are correspondingly arranged below the first transmission component 2 and the second transmission component 3. A cleaning component 7 is installed inside the waste hopper 6. The cleaning component 7 includes a fixing frame 701 fixed inside the waste hopper 6. A protective shell 702 is installed on the top of the fixing frame 701. An electric push rod 703 is installed inside the protective shell 702. The telescopic end of the electric push rod 703 is connected to a cleaning brush 7031. The electric push rod 703 inside the waste hopper 6 drives the cleaning brush 7031 to adjust its height, so that the cleaning brush 7031 contacts the first conveyor belt 204 or the second conveyor belt 304 to clean the magnetic impurities and residual materials on it, and maintain the cleanliness of the first conveyor belt 204 or the second conveyor belt 304.

[0032] Example 2

[0033] like Figure 1-4 As shown, this utility model provides a technical solution: a high-efficiency separating type rice magnetic separator, the top of the frame 1 is fixed to the other side of the first transmission component 2 and the top of the box 4 is connected to the feed hopper 5. The feed hopper 5 is provided with multiple partitions 501, and multiple chambers 502 are formed between the partitions 501. The box 4 has a material guiding channel 9 inside, and a material guiding component 10 is integrated in the material guiding channel 9. The material guiding component 10 includes a rotating shaft 1011 that passes through the material guiding channel 9. An opening and closing plate 1012 is fixed on the rotating shaft 1011. One end of the rotating shaft 1011 is connected to a third drive motor 1013, and the other end is equipped with a position sensor 1014. A pressure sensor 1015 is embedded in the opening and closing plate 1012.

[0034] The chamber 502 formed by multiple partitions 501 in the feed hopper 5 can realize the diversion and feeding of rice. With the guiding effect of the guide channel 9, it can avoid material accumulation and improve the uniformity of material distribution, reducing the pressure of subsequent sorting. The guide component 10 monitors the load pressure of the opening and closing plate 1012 in real time through the pressure sensor 1015. Combined with the linkage of the third drive motor 1013 and the position sensor 1014, it automatically adjusts the opening and closing angle to dynamically adapt to different material flow rates and ensure the stability of rice flow in the guide channel 9.

[0035] The working process of this utility model is as follows: When using a high-efficiency separating type rice magnetic separator, firstly, rice enters the equipment through the feed hopper 5, and is evenly distributed by multiple chambers 502 formed by the partition 501 to avoid material accumulation. The rotating shaft 1011 of the guiding component 10 drives the opening and closing plate 1012 to dynamically adjust the angle. The pressure sensor 1015 monitors the rice flow rate in real time. The angle of the opening and closing plate 1012 is adjusted by the third drive motor 1013 to ensure that the rice is evenly fed into the first transmission component 2 along the guiding channel 9 for the first stage of magnetic separation of the rice. The first drive motor 203 drives the first magnetic roller 202 to rotate, and drives the first rotating roller 201 to rotate synchronously through the belt linkage, so that the first conveyor belt 204 transports the rice at a set speed. The magnetic field generated by the first magnetic roller 202 adsorbs the metal impurities in the rice. After the impurities move to the separation area with the conveyor belt, they fall into the waste hopper 6 below under the action of gravity and centrifugal force. The rice that has been initially separated falls from the end of the first transmission component 2 to the second transmission component 3. The rice undergoes a second-stage magnetic separation via the second transmission component 3. The second drive motor 303 independently controls the rotation speed of the second magnetic roller 302, which in turn drives the second rotating roller 301 via a belt linkage, thereby driving the second conveyor belt 304. The magnetic field coverage is matched with the rice feeding trajectory, resulting in secondary adsorption of residual metal impurities. The impurities adsorbed by the second magnetic roller 302 are also removed into the waste hopper 6. The cleaned rice is discharged from the discharge port 11 at the end of the second transmission component 3. The cleaning component 7 in the waste hopper 6 adjusts the height of the cleaning brush 7031 via an electric push rod 703, ensuring it adheres to the surface of the first conveyor belt 204 or the second conveyor belt 304. The cleaning brush 7031 moves along the conveyor belt running direction to remove residual magnetic impurities and adhering materials, ensuring the cleanliness of the conveyor belt surface and maintaining the adsorption efficiency of the magnetic roller. The first transmission component 2 and the second transmission component 3 form a continuous sorting path through a stepped layout. The rice is layered and screened during its gradual descent, and the magnetic field strength of the magnetic roller is matched with the speed of the conveyor belt to maximize the impurity adsorption rate.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency separating type rice magnetic separator, comprising a frame (1), characterized in that: A first transmission component (2) is installed on the top of the frame (1). A second transmission component (3) is arranged below one side of the first transmission component (2). A housing (4) is fixed on the top of the frame (1) on the other side of the first transmission component (2). The top of the housing (4) is connected to a feed hopper (5). Multiple partitions (501) are provided in the feed hopper (5). Multiple chambers (502) are formed between the partitions (501). A waste hopper (6) is set below the first transmission component (2) and the second transmission component (3). A cleaning component (7) is installed in the waste hopper (6). A control panel (8) is provided on the other side of the front of the frame (1). A material guiding channel (9) is opened inside the housing (4). A material guiding component (10) is integrated in the material guiding channel (9).

2. The high-efficiency separating type rice magnetic separator according to claim 1, characterized in that: The second transmission component (3) has a discharge port (11) located on one side of the frame (1).

3. The high-efficiency separating type rice magnetic separator according to claim 1, characterized in that: The first transmission component (2) includes a plurality of first rotating rollers (201) and first magnetic rollers (202) arranged in parallel. A first drive motor (203) is mounted on the front of the frame (1). A first conveyor belt (204) is provided on the first rotating rollers (201) and the first magnetic rollers (202).

4. The high-efficiency separating type rice magnetic separator according to claim 3, characterized in that: The output end of the first drive motor (203) is connected to the first magnetic roller (202) for transmission, and the first rotating roller (201) and the first magnetic roller (202) are synchronously linked by a belt.

5. The high-efficiency separating type rice magnetic separator according to claim 1, characterized in that: The second transmission component (3) includes a plurality of second rotating rollers (301) and a second magnetic roller (302) arranged in parallel. A second drive motor (303) is installed on one side of the front of the frame (1). A second conveyor belt (304) is provided on the second rotating rollers (301) and the second magnetic rollers (302).

6. The high-efficiency separating type rice magnetic separator according to claim 5, characterized in that: The output end of the second drive motor (303) is connected to a second magnetic roller (302) for transmission, and the second rotating roller (301) and the second magnetic roller (302) are synchronously linked by a belt.

7. The high-efficiency separating type rice magnetic separator according to claim 1, characterized in that: The cleaning assembly (7) includes a fixing frame (701) fixed inside the waste hopper (6), a protective shell (702) is installed on the top of the fixing frame (701), an electric push rod (703) is provided inside the protective shell (702), and the telescopic end of the electric push rod (703) is connected to a cleaning brush (7031).

8. The high-efficiency separating type rice magnetic separator according to claim 1, characterized in that: The material guiding assembly (10) includes a rotating shaft (1011) that passes through the material guiding channel (9). An opening and closing plate (1012) is fixed on the rotating shaft (1011). One end of the rotating shaft (1011) is connected to a third drive motor (1013), and a position sensor (1014) is installed at the other end. A pressure sensor (1015) is embedded in the opening and closing plate (1012).

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