Rice magnetic separation equipment

Abstract

The utility model relates to rice magnetic separation equipment which comprises a box body, a feeding hopper used for supplying rice is arranged on the box body, a cavity used for rice magnetic separation is formed in the box body, three strong magnetic rollers are rotationally arranged in the cavity and distributed in a triangular shape, and a bottom opening of the feeding hopper is located above the uppermost strong magnetic roller; two guide plates are oppositely arranged in the cavity, the guide plates are used for guiding rice magnetically separated by the topmost strong magnetic roller to the two strong magnetic rollers at the bottom, and a driving part is arranged in the cavity and used for driving the strong magnetic rollers to rotate; according to the device, the strong magnetic rollers in triangular distribution are arranged, and the guide plates are used for guiding rice to the two strong magnetic rollers at the bottom for secondary magnetic separation, so that the contact area of the rice and the strong magnetic rollers is greatly increased, the magnetic separation time is greatly prolonged, the magnetic separation effect is improved, and it is ensured that magnetic impurities in the rice are completely removed.

Description

Technical Field

[0001] This application relates to the field of rice processing technology, and in particular to a rice magnetic separation device. Background Technology

[0002] In the modern grain processing industry, rice, as one of the main food crops, is of paramount importance in terms of quality and safety. However, during the production, processing, and storage of rice, some magnetic impurities, such as iron filings and magnetic mineral particles, inevitably become mixed in. These magnetic impurities not only affect the appearance and taste of the rice but may also damage subsequent processing equipment and even pose a potential threat to human health. Therefore, effective magnetic separation of rice during the processing to remove magnetic impurities is a crucial step in ensuring the quality and safety of rice.

[0003] Currently, there are various rice magnetic separation devices on the market. These devices typically use a strong magnetic roller as the core component of magnetic separation. By having the rice roll or slide on the surface of the strong magnetic roller, magnetic impurities are adsorbed onto the strong magnetic roller, thereby achieving the purpose of magnetic separation.

[0004] However, in practical applications, due to the small size of magnetic impurity particles and the high flow rate of rice during magnetic separation, it is often difficult to ensure that all magnetic impurities are completely removed when rice undergoes only a single pass through the high-intensity magnetic roller. Some magnetic impurities may pass through the magnetic separation zone with the rice and remain in the finished rice, resulting in unsatisfactory magnetic separation effects. This not only reduces the quality of the rice but may also increase equipment wear and maintenance costs in subsequent processing.

[0005] To address the above problems, a rice magnetic separation device is now designed. Utility Model Content

[0006] This application provides a rice magnetic separation device to solve the problem in related technologies that, due to the small size of magnetic impurity particles and the high flow rate of rice during the magnetic separation process, it is difficult to ensure that magnetic impurities are completely removed when the rice is only subjected to a single magnetic separation process by a strong magnetic roller.

[0007] Firstly, a rice magnetic separation device is provided, comprising:

[0008] The container has a feeding hopper for supplying rice. Inside the container is a cavity for magnetic separation of rice. Three strong magnetic rollers are rotatably arranged inside the cavity. The three strong magnetic rollers are arranged in a triangular distribution. The bottom opening of the feeding hopper is located above the uppermost strong magnetic roller. Two guide plates are arranged opposite each other inside the cavity. The guide plates are used to guide the rice separated by the uppermost strong magnetic roller to the two lower strong magnetic rollers. A driving component is provided inside the cavity to drive the strong magnetic rollers to rotate.

[0009] The cavity is equipped with a conveying component located at the bottom of the strong magnetic roller, and the box is equipped with a discharge hopper. The conveying component is used to transport the magnetically separated rice and send it out through the discharge hopper.

[0010] The conveying component is equipped with multiple strong magnetic strips.

[0011] In some embodiments, the strong magnetic roller includes a rotating shaft rotatably disposed inside the cavity, a positioning disk that fits into the cavity is disposed on one side of the rotating shaft, a strong magnetic cylinder is inserted into the rotating shaft, and a fixing disk is threadedly connected to the end of the rotating shaft away from the positioning disk, the fixing disk being used to lock the strong magnetic cylinder.

[0012] In some embodiments, the drive unit includes a housing disposed on a housing, one end of the rotating shaft passing through the housing and extending to the outside of the housing, and the housing is provided with a bearing seat for supporting the rotating shaft;

[0013] The rotating shaft is provided with multiple pulleys located inside the housing, and a belt is connected between adjacent pulleys. The housing is provided with a drive motor and a reducer. The output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to any rotating shaft.

[0014] In some embodiments, the two guide plates are located on either side of the topmost strong magnetic roller, with the bottom end of the guide plates tilted away from the topmost strong magnetic roller and facing upwards from the bottom corresponding to the strong magnetic roller;

[0015] Gaps are provided between the three magnetic rollers and between the magnetic rollers and the cavity to allow the rice to fall.

[0016] In some embodiments, the conveying component includes two support plates disposed opposite each other inside the cavity, a drive roller is rotatably disposed between the two support plates, a conveyor belt is driven between the two drive rollers, a second drive motor and a second reducer are disposed on the housing, the output shaft of the second drive motor is connected to the input shaft of the second reducer, and the output shaft of the second reducer is connected to one end of any of the drive rollers;

[0017] The box body has a through hole that communicates with the discharge hopper, and one end of the support plate passes through the through hole and extends into the discharge hopper.

[0018] In some embodiments, multiple strong magnetic strips are distributed at equal intervals on the conveyor belt.

[0019] In some embodiments, two openings are provided on opposite sides of the cavity, and two maintenance doors are hinged to the openings. An observation window is provided on the upper maintenance door.

[0020] This application provides a rice magnetic separation device. By setting three strong magnetic rollers arranged in a triangle and using a guide plate to guide the rice to the bottom two strong magnetic rollers for secondary magnetic separation, the contact area between the rice and the strong magnetic rollers and the magnetic separation time are greatly increased, thereby improving the magnetic separation effect and ensuring that magnetic impurities in the rice are completely removed.

[0021] Multiple strong magnetic strips installed on the conveyor continue to adsorb any residual magnetic impurities during the conveying process, further improving the purity of the rice.

[0022] By using a drive unit to power a strong magnetic roller and a conveyor to transport the rice, continuous magnetic separation and conveying of rice are achieved, improving production efficiency. At the same time, the entire equipment has a compact structure, occupies a small area, and is easy to operate, maintain, and repair. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0025] Figure 2 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0026] Figure 3 A front sectional view provided for an embodiment of this application;

[0027] Figure 4 Rear view provided for embodiments of this application;

[0028] Figure 5 A top sectional view of the connection structure between the strong magnetic roller and the drive component provided in an embodiment of this application;

[0029] Figure 6 This is a front sectional view of the conveyor provided in an embodiment of this application.

[0030] In the diagram: 1. Box body; 2. Feed hopper; 3. Cavity; 4. Strong magnetic roller; 41. Rotating shaft; 42. Positioning plate; 43. Strong magnetic cylinder; 44. Fixed plate; 5. Guide plate; 6. Drive component; 61. Housing; 62. Bearing seat; 63. Pulley; 7. Discharge hopper; 8. Strong magnetic strip; 9. Maintenance door; 10. Conveying component; 101. Support plate; 102. Drive roller; 103. Conveyor belt. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] This application provides a rice magnetic separation device that solves the problem in related technologies where, due to the small size of magnetic impurity particles and the high flow rate of rice during the magnetic separation process, it is difficult to ensure that magnetic impurities are completely removed when the rice undergoes only a single magnetic separation process with a strong magnetic roller.

[0033] Please see Figures 1-3 A rice magnetic separation device includes: a housing 1 with a feed hopper 2 for supplying rice; a cavity 3 inside the housing 1 for magnetic separation of rice; three strong magnetic rollers 4 rotatably arranged inside the cavity 3 in a triangular arrangement; the bottom opening of the feed hopper 2 located above the uppermost strong magnetic roller 4; two guide plates 5 opposite each other inside the cavity 3 for guiding the rice separated by the uppermost strong magnetic roller 4 to the two lower strong magnetic rollers 4; a driving component 6 inside the cavity 3 for driving the strong magnetic rollers 4 to rotate; a conveying component 10 located at the bottom of the strong magnetic rollers 4 inside the cavity 3; a discharge hopper 7 on the housing 1 for conveying the magnetically separated rice and sending it out through the discharge hopper 7; and multiple strong magnetic strips 8 on the conveying component 10.

[0034] Initial magnetic separation:

[0035] Rice enters the cavity 3 inside the box 1 through the feed hopper 2. The bottom opening of the feed hopper 2 is located above the uppermost strong magnetic roller 4, ensuring that the rice falls directly onto the uppermost strong magnetic roller 4. The uppermost strong magnetic roller 4 rotates under the drive of the drive component 6. The rice rolls or slides on the surface of the strong magnetic roller 4. Magnetic impurities are adsorbed onto the strong magnetic roller 4, while the rice continues to fall.

[0036] Secondary magnetic separation:

[0037] After the initial magnetic separation, the rice is guided by the guide plate 5 to the two strong magnetic rollers 4 at the bottom. These two strong magnetic rollers 4 rotate under the drive of the drive unit 6 to perform a second magnetic separation on the rice, further removing residual magnetic impurities.

[0038] Rice conveying and discharging:

[0039] After secondary magnetic separation, the rice falls onto the conveyor 10 located at the bottom of the strong magnetic roller 4. The conveyor 10 transports the magnetically separated rice toward the discharge hopper 7. During the transport process, the strong magnetic strip 8 continues to adsorb any remaining magnetic impurities to ensure the purity of the rice. Finally, the magnetically separated rice is discharged through the discharge hopper 7, completing the entire magnetic separation process.

[0040] By setting up three triangularly distributed strong magnetic rollers 4 and using a guide plate 5 to guide the rice to the bottom two strong magnetic rollers 4 for secondary magnetic separation, the contact area between the rice and the strong magnetic rollers 4 and the magnetic separation time are greatly increased, thereby improving the magnetic separation effect and ensuring that magnetic impurities in the rice are completely removed.

[0041] The multiple strong magnetic strips 8 set on the conveyor 10 continue to adsorb any magnetic impurities that may remain during the conveying process, further improving the purity of the rice.

[0042] The strong magnetic roller 4 is driven by the drive component 6, and the conveyor component 10 conveys the rice, realizing continuous magnetic separation and conveying of rice, thus improving production efficiency. At the same time, the entire equipment has a compact structure, occupies a small area, and is easy to operate, maintain, and repair.

[0043] like Figure 5 As shown, the strong magnetic roller 4 in this embodiment includes a rotating shaft 41 rotatably disposed inside the cavity 3. A positioning disk 42 that fits into the cavity 3 is disposed on one side of the rotating shaft 41. A strong magnetic cylinder 43 is inserted into the rotating shaft 41. A fixing disk 44 is threadedly connected to the end of the rotating shaft 41 away from the positioning disk 42. The fixing disk 44 is used to lock the strong magnetic cylinder 43. A through hole adapted to the rotating shaft 41 is provided on the strong magnetic cylinder 43.

[0044] The rotating shaft 41 rotates inside the cavity 3, driving the entire strong magnetic roller 4 to rotate. The positioning disk 42 is fixed on one side of the rotating shaft 41 and fits against the inner wall of the cavity 3, playing a positioning and supporting role for the strong magnetic cylinder 43.

[0045] The strong magnetic cylinder 43 is a magnetic component of the strong magnetic roller 4, which is responsible for adsorbing magnetic impurities in the rice. The strong magnetic cylinder 43 is cylindrical and has a through hole inside that matches the rotating shaft 41, so that it can be easily inserted into the rotating shaft 41.

[0046] One end of the rotating shaft 41 is threaded, and the fixing plate 44 is threaded to the end of the rotating shaft 41 away from the positioning plate 42 to lock the strong magnetic cylinder 43 and prevent it from falling off during rotation. The diameter of the fixing plate 44 is larger than the diameter of the strong magnetic cylinder 43, and it is threaded to the rotating shaft 41 for easy disassembly and installation.

[0047] Insert the strong magnetic cylinder 43 into the rotating shaft 41, ensuring that the strong magnetic cylinder 43 and the rotating shaft 41 fit tightly together, so that one side of the positioning plate 42 fits with one side of the strong magnetic cylinder 43. Then, thread the fixing plate 44 onto the other end of the rotating shaft 41 to lock the strong magnetic cylinder 43.

[0048] The driving component 6 drives the rotating shaft 41 to rotate, which in turn drives the positioning disk 42, the strong magnetic cylinder 43, and the fixed disk 44 to rotate together. During the rotation, the magnetic field on the surface of the strong magnetic cylinder 43 attracts magnetic impurities in the rice, adsorbing the magnetic impurities onto the strong magnetic cylinder 43.

[0049] In practical use, when it is necessary to replace or clean the strong magnetic cylinder 43, the fixing plate 44 can be easily disassembled to remove the strong magnetic cylinder 43 from the rotating shaft 41. After cleaning or replacing the strong magnetic cylinder 43, the fixing plate 44 can be reinstalled and locked to restore its use.

[0050] The positioning plate 42 and the fixing plate 44 ensure that the strong magnetic cylinder 43 will not shift or fall off during rotation, thus improving the stability and reliability of the equipment.

[0051] Furthermore, the fixed plate 44 adopts a threaded connection, which facilitates disassembly and installation, and makes it easy to replace and clean the strong magnetic cylinder 43.

[0052] like Figure 4 and Figure 5 As shown, in one embodiment, the driving component 6 includes a housing 61 mounted on a housing 1. One end of the rotating shaft 41 passes through the housing 1 and the housing 61 and extends to the outside of the housing 61. A bearing seat 62 for supporting the rotating shaft 41 is provided on the housing 61. Multiple pulleys 63 located inside the housing 61 are provided on the rotating shaft 41, and a belt drives between adjacent pulleys 63. A drive motor and a reducer are provided on the housing 61. The output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to any of the rotating shafts 41. Multiple through holes for the extension of the rotating shaft 41 are provided on both the housing 61 and the housing 1.

[0053] The rotating shaft 41 is the rotating component of the strong magnetic roller 4. One end of the rotating shaft 41 passes through the housing 1 and the shell 61 and extends to the outside of the shell 61 for connection with other components of the drive system. Multiple pulleys 63 are provided on the rotating shaft 41 for transmission connection with adjacent rotating shafts 41.

[0054] The bearing housing 62 is used to support the rotating shaft 41, reduce the friction and wear of the rotating shaft 41 during rotation, and improve the stability and reliability of the equipment. The bearing housing 62 is fixed on the housing 61 and is adapted to the rotating shaft 41 to ensure that the rotating shaft 41 can rotate smoothly.

[0055] The diameter and number of teeth of pulley 63 are designed according to actual needs to ensure transmission ratio and transmission efficiency.

[0056] After the drive motor starts, it transmits power to any rotating shaft 41 through the reducer. The pulley 63 on the rotating shaft 41 drives the adjacent pulley 63 to rotate via a belt, which in turn drives the other rotating shafts 41 to rotate synchronously. All rotating shafts 41 rotate synchronously under the transmission of the belt, driving the strong magnetic roller 4 to rotate and perform magnetic separation of rice. By adjusting the reduction ratio of the reducer, the rotation speed of the rotating shaft 41 can be adjusted to meet different production needs.

[0057] The synchronous rotation of multiple rotating shafts 41 is achieved through the transmission connection of pulley 63 and belt, ensuring the synchronous operation of the strong magnetic roller 4 and improving the magnetic separation effect.

[0058] The rotational speed of the shaft 41 can be easily adjusted by adjusting the reducer to meet different production needs and improve the flexibility and adaptability of the equipment.

[0059] like Figure 3 As shown, it can be understood that in this embodiment, the two guide plates 5 are located on both sides of the topmost strong magnetic roller 4. The bottom end of the guide plate 5 is inclined away from the topmost strong magnetic roller 4 and faces upwards from the bottom corresponding to the strong magnetic roller 4. Gaps are left between the three strong magnetic rollers 4 and between the strong magnetic roller 4 and the cavity 3 for the rice to fall.

[0060] Two guide plates 5 are located on both sides of the topmost strong magnetic roller 4, and are symmetrically distributed. This layout ensures that the rice falling from the topmost strong magnetic roller 4 can be evenly guided to the two bottom strong magnetic rollers 4.

[0061] The bottom end of the guide plate 5 is tilted away from the topmost strong magnetic roller 4 and faces upwards from the bottom corresponding to the strong magnetic roller 4, so that the rice can smoothly slide down the guide plate 5 under the action of gravity, avoiding the rice from accumulating or lingering on the guide plate 5.

[0062] The main function of the guide plate 5 is to guide the rice, after it has passed through the top strong magnetic roller 4, to the two bottom strong magnetic rollers 4, ensuring that the rice can continue to undergo secondary magnetic separation and improving the magnetic separation effect. Through the guiding action of the guide plate 5, the rice can be evenly distributed on the two bottom strong magnetic rollers 4, avoiding the situation of too much or too little rice in some areas, thus improving the uniformity and efficiency of magnetic separation.

[0063] There are gaps between the three strong magnetic rollers 4 to allow the rice to fall. The size of these gaps is designed according to the grain size of the rice and the magnetic separation requirements to ensure that the rice can pass through the gaps smoothly.

[0064] There is also a gap between the strong magnetic roller 4 and the cavity 3. These gaps are mainly used for the falling of rice and the circulation of air to ensure the smooth falling of rice.

[0065] like Figure 3 and Figure 6 As shown, in one embodiment, the conveying component 10 includes two support plates 101 disposed opposite to each other inside the cavity 3, two drive rollers 102 rotatably disposed between the two support plates 101, and a conveyor belt 103 drivingly disposed between the two drive rollers 102. The housing 1 is provided with a second drive motor and a second reducer. The output shaft of the second drive motor is connected to the input shaft of the second reducer, and the output shaft of the second reducer is connected to one end of any of the drive rollers 102. The housing 1 has a through hole communicating with the discharge hopper 7, and one end of the support plate 101 passes through the through hole and extends into the discharge hopper 7.

[0066] When the second drive motor starts, it transmits power to the drive roller 102 through the second reducer, driving the drive roller 102 to rotate. When the drive roller 102 rotates, it drives the conveyor belt 103 to move. The rice is placed on the conveyor belt 103 and moves together with the conveyor belt 103 to realize the conveying of the rice.

[0067] In actual use, the housing 1 has a through hole that communicates with the discharge hopper 7, and one end of the support plate 101 passes through the through hole and extends into the discharge hopper 7. When rice is conveyed to the end of the support plate 101, the rice will naturally fall into the discharge hopper 7, thus realizing the discharge of rice.

[0068] It should be noted that the diameter and surface roughness of the drive roller 102 are designed according to the material of the conveyor belt 103 and the conveying requirements to ensure sufficient friction between the drive roller and the conveyor belt 103 and to prevent slippage. The width and length of the conveyor belt 103 are designed according to the spacing of the support plates 101 and the conveying requirements to ensure that it can completely cover the space between the support plates 101. This is existing technology and will not be described in detail here.

[0069] like Figure 6 As shown, further, a plurality of the strong magnetic strips 8 are distributed at equal intervals on the conveyor belt 103.

[0070] Multiple strong magnetic strips 8 are evenly distributed on the conveyor belt 103 to ensure that every area of ​​the conveyor belt 103 provides a uniform magnetic field during operation, avoiding uneven magnetic separation. The strong magnetic strips 8 form a uniform magnetic field on the conveyor belt 103 to perform magnetic separation on the passing rice, adsorbing magnetic impurities in the rice and improving the purity of the rice.

[0071] In this embodiment, the strong magnetic strip 8 is a strip-shaped strong magnet, and the strong magnetic cylinder 43 is a cylindrical strong magnet.

[0072] The strong magnetic strip 8 adopts a strip-shaped design with a regular shape, which facilitates its uniform distribution on the conveyor belt 103. The strip-shaped structure also allows the strong magnetic strip 8 to fit tightly against the conveyor belt 103, improving the magnetic separation effect.

[0073] In practical use, the strong magnetic strip 8 is installed on the conveyor belt 103 by means of embedding, pasting or bolting to ensure that the installation is firm and not easy to fall off.

[0074] The strong magnet material selected for the strong magnet strip 8 has the characteristics of high magnetic energy product, high coercivity and high remanence, which ensures that it can maintain stable magnetism during long-term use. This is existing technology and will not be described in detail here.

[0075] The strong magnetic cylinder 43 is cylindrical, which facilitates its installation and use inside the equipment. The cylindrical structure also enables the strong magnetic cylinder 43 to provide a uniform magnetic field, ensuring the magnetic separation effect.

[0076] The strong magnetic cylinder 43 also uses strong magnetic materials, which have the characteristics of high magnetic energy product, high coercivity and high remanence, ensuring that it can maintain stable magnetism during long-term use. This is existing technology and will not be described in detail here.

[0077] By combining the strong magnetic strip 8 and the strong magnetic cylinder 43, a multi-stage magnetic separation system is formed, ensuring that the rice can undergo multiple magnetic separations during the transportation process, thereby improving the magnetic separation effect. At the same time, it ensures the continuous transportation and efficient processing of rice, thus improving production efficiency.

[0078] like Figure 1 and Figure 2 In this embodiment, the cavity 3 has two openings on one side, and two maintenance doors 9 are hinged to the openings. The upper maintenance door 9 is provided with an observation window.

[0079] Two openings are provided on one side of cavity 3 to form a symmetrical structure, which facilitates maintenance and operation of different areas inside the equipment.

[0080] The maintenance door 9 is connected to the edge of the cavity 3 opening via a hinge, enabling flexible opening and closing.

[0081] The maintenance door 9 located at the top is equipped with an observation window, such as tempered glass or plexiglass, to ensure clear visibility and prevent damage. The observation window allows maintenance personnel to observe the internal operating status of the equipment and the rice conveying process in real time without opening the maintenance door 9, enabling them to promptly detect abnormalities and take appropriate measures.

[0082] Specifically, the maintenance door 9 is equipped with a sealing strip along its edge, which fits tightly against the opening of the cavity 3 when closed, preventing dust, moisture, and other impurities from entering the equipment and ensuring a safe operating environment. The maintenance door 9 is also equipped with a lock or latch to ensure it remains closed during equipment operation, preventing accidents caused by misoperation.

[0083] The double-opening design and the reasonable layout of maintenance door 9 enable maintenance personnel to quickly and conveniently enter the equipment for inspection, cleaning and other operations, thereby shortening equipment downtime and improving production efficiency.

[0084] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0085] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0086] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application 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 claimed herein.

Claims

1. A rice magnetic separation device, characterized in that, include: A box (1) is provided with a feeding hopper (2) for supplying rice. The box (1) has a cavity (3) for magnetic separation of rice inside. Three strong magnetic rollers (4) are rotatably arranged inside the cavity (3). The three strong magnetic rollers (4) are arranged in a triangular distribution. The bottom opening of the feeding hopper (2) is located above the uppermost strong magnetic roller (4). Two guide plates (5) are arranged opposite each other inside the cavity (3). The guide plates (5) are used to guide the rice after magnetic separation by the uppermost strong magnetic roller (4) to the two bottom strong magnetic rollers (4). A driving component (6) is provided inside the cavity (3). The driving component (6) is used to drive the strong magnetic rollers (4) to rotate. The cavity (3) is provided with a conveying component (10) located at the bottom of the strong magnetic roller (4), and the box (1) is provided with a discharge hopper (7). The conveying component (10) is used to convey the magnetically separated rice and send it out through the discharge hopper (7). The conveying component (10) is provided with multiple strong magnetic strips (8).

2. The rice magnetic separation device as described in claim 1, characterized in that: The strong magnetic roller (4) includes a rotating shaft (41) rotatably disposed inside the cavity (3). A positioning disk (42) that fits into the cavity (3) is provided on one side of the rotating shaft (41). A strong magnetic cylinder (43) is inserted into the rotating shaft (41). A fixing disk (44) is threadedly connected to the end of the rotating shaft (41) away from the positioning disk (42). The fixing disk (44) is used to lock the strong magnetic cylinder (43).

3. The rice magnetic separation device as described in claim 2, characterized in that: The drive unit (6) includes a housing (61) disposed on the housing (1), one end of the rotating shaft (41) passes through the housing (1) and the housing (61) and extends to the outside of the housing (61), and a bearing seat (62) for supporting the rotating shaft (41) is provided on the housing (61). The rotating shaft (41) is provided with a plurality of pulleys (63) located inside the housing (61), and a belt is connected between two adjacent pulleys (63). The housing (61) is provided with a drive motor and a reducer. The output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to any rotating shaft (41).

4. The rice magnetic separation device as described in claim 1, characterized in that: The two guide plates (5) are located on both sides of the topmost strong magnetic roller (4). The bottom end of the guide plate (5) is inclined away from the topmost strong magnetic roller (4) and faces upwards from the bottom corresponding to the strong magnetic roller (4). Gaps are provided between the three magnetic rollers (4) and between the magnetic rollers (4) and the cavity (3) for the rice to fall.

5. The rice magnetic separation device as described in claim 1, characterized in that: The conveying component (10) includes two support plates (101) arranged opposite to each other inside the cavity (3), two active rollers (102) are rotatably arranged between the two support plates (101), and a conveyor belt (103) is driven between the two active rollers (102). The housing (1) is provided with a second drive motor and a second reducer. The output shaft of the second drive motor is connected to the input shaft of the second reducer, and the output shaft of the second reducer is connected to one end of any of the active rollers (102). The box body (1) has a through hole that communicates with the discharge hopper (7), and one end of the support plate (101) passes through the through hole and extends into the discharge hopper (7).

6. The rice magnetic separation device as described in claim 5, characterized in that: Multiple strong magnetic strips (8) are distributed at equal intervals on the conveyor belt (103).

7. The rice magnetic separation device as described in claim 1, characterized in that: The cavity (3) has two openings on one side, and two maintenance doors (9) are hinged at the openings. An observation window is provided on the upper maintenance door (9).

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