Red rice magnetic separation device capable of repeatedly adjusting precision

Abstract

The red rice magnetic separation device comprises a supporting frame, a feeding mechanism and a magnetic separation mechanism are arranged above the supporting frame, a magnetic separation bin is fixedly installed at the left end of the supporting frame, and the upper portion of the magnetic separation bin is communicated with a feeding bin; the feeding mechanism comprises a feeding limiting structure and a material dispersing structure, the magnetic separation mechanism comprises a permanent magnet roller, a driving motor and an adjustable scraper blade, a leakage net and a limiting baffle capable of being adjusted in a sliding mode are arranged in the feeding bin, and the material dispersing structure is matched with a spring body through a vibration motor to disperse red rice; the red rice magnetic separation device capable of repeatedly adjusting the precision is provided with the feeding mechanism and the magnetic separation mechanism, and the feeding mechanism remarkably improves the red rice separation uniformity through double optimization of flow adjustment and vibration dispersion; the magnetic separation mechanism achieves efficient impurity removal through dynamic adsorption of a permanent magnetic roller and convenient cleaning of a scraper, and the core problems that a traditional device is low in precision and many in impurity residues are solved through cooperation of the two.

Description

A Red Rice Magnetic Separator with Repeatable Adjustable Precision Technical Field

[0001] This utility model relates to the field of red rice processing technology, specifically a red rice magnetic separator with adjustable precision. Background Technology

[0002] Red rice processing uses brown rice, rich in anthocyanins, iron, zinc, and other nutrients, as raw material. Through a refined process chain including hulling and sorting, low-temperature milling, color sorting and grading, appropriate polishing, precise drying, sterilization and preservation, the original brown rice is transformed into finished rice that retains antioxidants and has better palatability. At the same time, it extends to the development of deep-processed products such as red rice flour, red rice enzymes, and red rice tea, and utilizes rice bran to extract natural pigments and dietary fiber. Its core lies in balancing nutrient retention and processing suitability through modern food engineering technology. While meeting the market demand for healthy food, it builds a green processing system of "whole grain utilization and zero-waste production," which not only enhances the added value of mountain specialty agricultural products, but also provides a technological paradigm for the development of functional staple foods and the upgrading of traditional grain industries.

[0003] Based on existing red rice magnetic separators, it was found that these devices directly pour red rice, requiring manual selection of the amount to be added, which is time-consuming and labor-intensive. Furthermore, the red rice is piled up with small gaps between the grains, resulting in some impurities, such as iron filings, being blocked and unable to be effectively adsorbed. This leads to a significant amount of iron filings remaining on some of the red rice, reducing its purity. Therefore, this invention designs a red rice magnetic separator with adjustable precision to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide a red rice magnetic separator with adjustable precision to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A red rice magnetic separator with adjustable precision includes a support frame. A feeding mechanism and a magnetic separation mechanism are disposed above the support frame. A magnetic separation chamber is fixedly installed at the left end of the support frame, and a feeding chamber is connected above the magnetic separation chamber. The feeding mechanism includes a feeding limiting structure and a dispersing structure. The magnetic separation mechanism includes a permanent magnet drum, a drive motor, and an adjustable scraper. The feeding chamber is equipped with a strainer and a slidably adjustable limiting baffle. The dispersing structure disperses the red rice through a vibration motor and a spring body. The permanent magnet drum is connected to the drive motor via a drive rod and adsorbs impurities. The scraper is detachably installed inside the limiting socket to remove impurities.

[0007] Optionally, the feeding limiting structure includes a screen, a limiting baffle, a rotating disk, a threaded rod, a rotating handle, a telescopic rod, and a support plate. The limiting baffle is slidably installed on the inner wall of the feeding hopper and is misaligned with the screen through a slot. The rotating disk is fixed to the front end of the limiting baffle and connected to the threaded rod. The front end of the threaded rod is provided with a rotating handle, and both sides are fixed to the support plate through telescopic rods. The support plate is rotatably connected to the threaded rod through a threaded seat.

[0008] Optionally, the bulk material structure includes a first bearing plate, a spring body, a second bearing plate, and a vibration motor. The vibration motor is symmetrically fixed on the outer sides of the left and right ends of the feed bin. The first bearing plate is connected to the vibration motor and elastically connected to the second bearing plate through the spring body. The second bearing plate is fixedly installed on the top of the magnetic separation bin.

[0009] Optionally, the magnetic separation mechanism further includes a feeding bin, a limit socket, a drive rod, and a bearing frame. The bottom of the magnetic separation bin is connected to the feeding bin. The permanent magnet roller is coaxially fixed on the drive rod. The drive rod is installed on the right end of the support frame through the bearing frame and is connected to the drive motor for transmission. The scraper can be horizontally moved and inserted into the limit socket.

[0010] Optionally, the threaded rod and the threaded seat of the support plate form a helical pair, and the limiting baffle is driven to slide laterally along the inner wall of the feed hopper by rotating the handle. The two ends of the telescopic rod are respectively hinged to the limiting baffle and the support plate to maintain the movement stability of the limiting baffle.

[0011] Optionally, the vibration output end of the vibration motor passes through the side wall of the feed hopper and is rigidly connected to the first bearing plate, and the spring body is vertically distributed between the first bearing plate and the second bearing plate.

[0012] Optionally, the blade of the scraper maintains an adjustable distance from the outer surface of the permanent magnet drum, and the scraper and the permanent magnet drum are contacted or separated by the guide groove of the limit socket, and the removed impurities are discharged in a concentrated manner through the discharge bin.

[0013] Optionally, the filter screen is provided in three parallel intervals in the feed hopper, and the number of slots of the limiting baffle matches the number of filter screens. The gap size of the Red Rice passing through the filter screen is controlled by adjusting the position of the limiting baffle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, a feeding mechanism is provided. The feeding mechanism, through the cooperation of a limiting baffle, a strainer, and a threaded rod, enables the repeatable adjustment of the red rice flow rate, avoiding the problem of over- or under-filling caused by traditional manual dumping, and significantly improving the consistency of sorting accuracy. The bulk material structure composed of a vibrating motor and a spring body, through the dual action of high-frequency vibration and elastic buffering, causes the red rice to be dispersed in layers on the strainer, effectively solving the problem of impurity blockage caused by stacking. The impurity exposure rate of red rice processed in a single batch is greatly improved. In addition, the linkage design of the telescopic rod and the support plate ensures the stability of the limiting baffle when sliding, avoiding displacement deviation caused by vibration, and further ensuring the adjustment accuracy.

[0016] 2. In this utility model, a magnetic separation mechanism is provided. The magnetic separation mechanism realizes the automated operation of continuous magnetic field adsorption and impurity removal through the linkage of permanent magnet drum and drive motor. Compared with the traditional fixed magnetic plate adsorption efficiency, the adsorption efficiency is greatly improved. The detachable design of scraper and limit socket allows operators to quickly remove impurities without stopping the machine. Attached Figure Description

[0017] Figure 1 is a three-dimensional front view of the structure of this utility model;

[0018] Figure 2 is a schematic diagram of the structure of this utility model from a frontal view.

[0019] Figure 3 is a three-dimensional top view of the structure of this utility model;

[0020] Figure 4 is a top view of the structure of this utility model;

[0021] Figure 5 is a two-dimensional top view of the structure of this utility model;

[0022] Figure 6 is a three-dimensional sectional view of the present invention.

[0023] Figure 7 is a two-dimensional cross-sectional structural schematic diagram of this utility model;

[0024] Figure 8 is a three-dimensional cross-sectional view of the present invention.

[0025] In the diagram: 1. Support frame; 2. Feeding mechanism; 201. Feeding bin; 202. Strainer; 203. Limiting baffle; 204. Rotary disc; 205. Threaded rod; 206. Rotating handle; 207. Telescopic rod; 208. Support plate; 209. First bearing plate; 210. Spring body; 211. Second bearing plate; 212. Vibrating motor; 3. Magnetic separation mechanism; 301. Magnetic separation bin; 302. Discharge bin; 303. Limiting socket; 304. Scraper; 305. Drive motor; 306. Drive rod; 307. Bearing frame; 308. Permanent magnet drum. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please refer to Figures 1-8. In this embodiment of the present invention, a red rice magnetic separator with adjustable precision includes a support frame 1. A feeding mechanism 2 and a magnetic separation mechanism 3 are arranged above the support frame 1. A magnetic separation chamber 301 is fixedly installed at the left end of the support frame 1, and a feeding chamber 201 is connected above the magnetic separation chamber 301. The feeding mechanism 2 includes a feeding limiting structure and a dispersing structure. A strainer 202 and a slidably adjustable limiting baffle 203 are provided inside the feeding chamber 201. The dispersing structure disperses the red rice through the cooperation of a vibration motor 212 and a spring body 210. The feeding limiting structure includes a strainer 202, a limiting baffle 203, a rotating disk 204, a threaded rod 205, a rotating handle 206, a telescopic rod 207, and a support plate 208. The limiting baffle 205... 3. Sliding installation on the inner wall of the feed bin 201 and misaligned with the screen 202 through a slot. Rotary disk 204 is fixed to the front end of the limiting baffle 203 and connected to the threaded rod 205. The front end of the threaded rod 205 is provided with a rotating handle 206. Both sides are fixed to the support plate 208 through telescopic rods 207. The support plate 208 is rotatably connected to the threaded rod 205 through a threaded seat. The bulk material structure includes a first bearing plate 209, a spring body 210, a second bearing plate 211 and a vibration motor 212. The vibration motor 212 is symmetrically fixed on the outer sides of the left and right ends of the feed bin 201. The first bearing plate 209 is connected to the vibration motor 212 and elastically connected to the second bearing plate 211 through the spring body 210. The second bearing plate 211 is fixedly installed on the top of the magnetic separation bin 301.

[0030] The feeding mechanism 2 consists of a feeding limiting structure and a dispersing structure. Specifically, after red rice is injected through the top of the feeding hopper 201, it is initially screened by three layers of parallel, spaced mesh 202. The mesh 202 is fixed to the inner wall of the feeding hopper 201, and its aperture is designed in a stepped decreasing pattern according to the red rice particle size to disperse the material layer by layer. The limiting baffle 203 is laterally slidably installed on the inner wall of the feeding hopper 201. Its front end is rigidly connected to the threaded rod 205 via a rotating disk 204. A rotating handle 206 is installed at the end of the threaded rod 205, and both sides are supported by telescopic rods 207 and a support plate 208. During operation, the rotating... The handle 206 drives the threaded rod 205 to rotate. Through the cooperation of the screw pair with the threaded seat on the support plate 208, it drives the limit baffle 203 to slide, thereby adjusting the gap through which the red rice passes, achieving a repeatable adjustment effect. At the same time, after the vibration motors 212 on the left and right sides of the feed hopper 201 are started, they transmit the vibration to the feed hopper 201 through the first bearing plate 209. The spring body 210 is distributed between the first bearing plate 209 and the second bearing plate 211, forming an elastic buffer system. This allows the red rice to be subjected to high-frequency vibration and the step blocking effect of the filter screen 202 during the falling process, completely breaking the stacking state and significantly improving the impurity exposure rate.

[0031] The magnetic separation mechanism 3 includes a permanent magnet drum 308, a drive motor 305, and an adjustable scraper 304. The permanent magnet drum 308 is connected to the drive motor 305 via a drive rod 306 and adsorbs impurities. The scraper 304 is detachably installed inside the limit socket 303 to remove impurities. The magnetic separation mechanism 3 also includes a feeding bin 302, a limit socket 303, a drive rod 306, and a bearing frame 307. The bottom of the magnetic separation bin 301 is connected to the feeding bin 302. The permanent magnet drum 308 is coaxially fixed on the drive rod 306. The drive rod 306 is installed on the right end of the support frame 1 via the bearing frame 307 and is connected to the drive motor 305. The scraper 304 is horizontally movable and inserted into the limit socket 303. The threaded rod 205 and the threaded seat of the support plate 208 form a helical pair. The limit baffle 203 is driven along the inner wall of the feeding bin 201 by rotating the handle 206. Laterally sliding, the two ends of the telescopic rod 207 are respectively hinged to the limiting baffle 203 and the support plate 208 to maintain the movement stability of the limiting baffle 203. The vibration output end of the vibration motor 212 passes through the side wall of the feed bin 201 and is rigidly connected to the first bearing plate 209. The spring body 210 is vertically distributed between the first bearing plate 209 and the second bearing plate 211. The blade of the scraper 304 maintains an adjustable distance from the outer surface of the permanent magnet roller 308. The scraper 304 and the permanent magnet roller 308 are contacted or separated through the guide groove of the limiting socket 303. The removed impurities are discharged in a concentrated manner through the discharge bin 302. There are three strainers 202, which are distributed in parallel and spaced in the feed bin 201. The number of slots of the limiting baffle 203 matches the number of strainers 202. The gap size of the red rice passing through the strainers 202 is controlled by adjusting the position of the limiting baffle 203.

[0032] The dispersed red rice falls evenly from the bottom of the feed hopper 201 into the magnetic separator 301. The drive motor 305 drives the permanent magnet drum 308 to rotate through the drive rod 306. During the falling process, magnetic impurities such as iron filings are attracted to the surface of the permanent magnet drum 308, while the clean red rice passes directly through the bottom of the magnetic separator 301 and is output. After the impurities are attracted, the operator pushes the scraper 304 horizontally along the guide groove of the limit socket 303 so that the scraper 304 is in close contact with the surface of the permanent magnet drum 308. The rotation of the permanent magnet drum 308 drives the impurities to the contact area of ​​the scraper 304. The blade peels off the impurities and discharges them along the feed hopper 302.

[0033] The working principle of this utility model is as follows: After the red rice is injected into the feeding hopper 201, the flow rate is first controlled by the feeding limiting structure. The operator rotates the rotating handle 206 to drive the threaded rod 205 to rotate, which drives the limiting baffle 203 to slide laterally along the inner wall of the feeding hopper 201. Through the misalignment of the slot on the limiting baffle 203 with the three strainers 202, the gap size of the red rice can be adjusted. For example, increasing the gap can increase the single processing volume, while decreasing the gap can improve the sorting accuracy, thereby precisely controlling the amount of red rice fed in. At the same time, after the vibration motor 212 is started, it drives the first bearing plate 209 to vibrate, and the vibration is transmitted to the feeding hopper 201 through the spring body 210, so that the red rice is dispersed layer by layer through the strainers 202 during the falling process, breaking the stacking state and increasing the gap between the red rice. The dispersed red rice falls evenly into the magnetic separation chamber 301. At this time, the drive motor 305 drives the permanent magnet drum 308 to rotate through the drive rod 306, using its surface magnetic field to adsorb magnetic impurities such as iron filings in the red rice. As the permanent magnet drum 308 continues to rotate, the adsorbed impurities gradually move away from the red rice falling area. When the impurities accumulate to a set amount, the operator pushes the scraper 304 horizontally along the limit socket 303 to the surface of the permanent magnet drum 308. The scraper 304 blades peel off the impurities, which are then discharged through the feeding chamber 302. The clean red rice is output from the bottom of the magnetic separation chamber 301, completing the sorting process.

[0034] 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 repeatably adjustable precision red rice magnetic separator, comprising a support frame (1), characterized in that: The support frame (1) is provided with a feeding mechanism (2) and a magnetic separation mechanism (3) above it. A magnetic separation chamber (301) is fixedly installed on the left end of the support frame (1). A feeding chamber (201) is connected above the magnetic separation chamber (301). The feeding mechanism (2) includes a feeding limit structure and a bulk material structure. The magnetic separation mechanism (3) includes a permanent magnet roller (308), a drive motor (305), and an adjustable scraper (304). The feeding chamber (201) is provided with a strainer (202) and a slidingly adjustable limit baffle (203). The bulk material structure achieves red rice dispersion by cooperating with a vibrating motor (212) and a spring body (210). The permanent magnet roller (308) is connected to the drive motor (305) through a drive rod (306) and adsorbs impurities. The scraper (304) is detachably installed inside the limit socket (303) to remove impurities.

2. The adjustable precision red rice magnetic separator according to claim 1, characterized in that: The feeding limiting structure includes a screen (202), a limiting baffle (203), a rotating disk (204), a threaded rod (205), a rotating handle (206), a telescopic rod (207), and a support plate (208). The limiting baffle (203) is slidably installed on the inner wall of the feeding bin (201) and is misaligned with the screen (202) through a slot. The rotating disk (204) is fixed to the front end of the limiting baffle (203) and connected to the threaded rod (205). The front end of the threaded rod (205) is provided with a rotating handle (206), and both sides are fixed to the support plate (208) through the telescopic rod (207). The support plate (208) is rotatably connected to the threaded rod (205) through a threaded seat.

3. The adjustable precision red rice magnetic separator according to claim 2, characterized in that: The bulk material structure includes a first bearing plate (209), a spring body (210), a second bearing plate (211), and a vibration motor (212). The vibration motor (212) is symmetrically fixed on the outer sides of the left and right ends of the feed bin (201). The first bearing plate (209) is connected to the vibration motor (212) and elastically connected to the second bearing plate (211) through the spring body (210). The second bearing plate (211) is fixedly installed on the top of the magnetic separator (301).

4. The adjustable precision red rice magnetic separator according to claim 1, characterized in that: The magnetic separation mechanism (3) also includes a feeding bin (302), a limit socket (303), a drive rod (306), and a bearing frame (307). The bottom of the magnetic separation bin (301) is connected to the feeding bin (302). The permanent magnet roller (308) is coaxially fixed on the drive rod (306). The drive rod (306) is installed on the right end of the support frame (1) through the bearing frame (307) and is connected to the drive motor (305) for transmission. The scraper (304) can be horizontally inserted into the limit socket (303).

5. The adjustable precision red rice magnetic separator according to claim 2, characterized in that: The threaded rod (205) and the threaded seat of the support plate (208) form a helical pair. The limiting baffle (203) is driven to slide laterally along the inner wall of the feed bin (201) by rotating the handle (206). The two ends of the telescopic rod (207) are respectively hinged to the limiting baffle (203) and the support plate (208) to maintain the movement stability of the limiting baffle (203).

6. The adjustable precision red rice magnetic separator according to claim 3, characterized in that: The vibration output end of the vibration motor (212) passes through the side wall of the feed hopper (201) and is rigidly connected to the first bearing plate (209). The spring body (210) is vertically distributed between the first bearing plate (209) and the second bearing plate (211).

7. The adjustable precision red rice magnetic separator according to claim 4, characterized in that: The blade of the scraper (304) maintains an adjustable distance from the outer surface of the permanent magnet roller (308). The scraper (304) and the permanent magnet roller (308) are contacted or separated through the guide groove of the limit socket (303). The removed impurities are discharged in a concentrated manner through the discharge bin (302).

8. The adjustable precision red rice magnetic separator according to claim 1, characterized in that: The mesh (202) is provided in three parallel intervals in the feed bin (201). The number of slots of the limiting baffle (203) matches the number of meshes (202). The gap size of the Red Rice passing through the meshes (202) is controlled by adjusting the position of the limiting baffle (203).

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