A rice air separator

Abstract

This utility model discloses a rice air separator, which integrates magnetic separation, screening, air separation, and storage components in a vertical housing. After metal impurities are removed by inclined magnetic separation, the material is separated from straw fragments by a double-layer vibrating screen. Then, a dual-fan airflow system removes light impurities and classifies the rice grains and stones by density, finally collecting them in a drawer-type storage component. This equipment, through its multi-stage collaborative sorting structure, effectively solves the problems of incomplete sorting, easy clogging, and complex maintenance of traditional equipment, and is suitable for deep purification treatment in rice processing scenarios.

Description

Technical Field

[0001] This utility model relates to the field of rice processing, and in particular to a rice air separator. Background Technology

[0002] In the rice processing industry, raw materials are often mixed with impurities such as metal scraps, straw fragments, rice husks and stones, which need to be processed by air separators. The basic principle of air separation is to separate the impurities from the rice grains and impurities based on the differences in aerodynamic properties such as suspension degree.

[0003] Traditional sorting equipment often employs a single processing method, resulting in incomplete separation, easy clogging, and frequent maintenance. Metallic impurities can damage subsequent processing equipment, lightweight debris affects the quality of the finished product, and the mixing of stones with large density differences with rice leads to inaccurate grading. Existing air-separation equipment typically relies on single-stage airflow separation, which is insufficiently adaptable to complex impurity scenarios, and the collection components often use a fixed structure, making cleaning and maintenance inconvenient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a rice air separator.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a rice air separator, including an air separator body, a feed inlet installed at the top of the air separator body, and a box installed at the bottom of the feed inlet. The box is characterized in that a magnetic separator, a screening component, an air separator component, and a storage component are installed sequentially inside the box along the material flow direction.

[0007] The magnetic separator is installed at the bottom of the feed inlet. A screen is detachably installed at one end of the magnetic separator via a mounting groove, and a vibration component is connected to the other end of the screen.

[0008] The air separation component includes a first fan and a second fan arranged opposite each other. The air outlet of the first fan is horizontally higher than the air outlet of the second fan. A storage component is installed on the bottom side of the air separation component.

[0009] The storage component includes a drawer-type collection drawer, the interior of which is divided into a first collection slot and a second collection slot by a partition, and a handle is installed at one end of the collection drawer.

[0010] As a preferred technical solution of this utility model, a negative pressure adsorption port is provided on the opposite side box wall of the first fan, and a negative pressure collection tank is connected to the negative pressure adsorption port for adsorbing and collecting the blown light debris.

[0011] The second fan's outlet direction forms a 15°-30° angle with the horizontal plane, ensuring that the rice is blown to the first collection trough, while heavy debris falls directly into the second collection trough.

[0012] As a preferred technical solution of this utility model, the magnetic separator is equipped with an electromagnet assembly inside. The top of the magnetic separator is a sloping structure, which forms an angle of 30°-45° with the bottom of the feed inlet, so that the material can fully contact the electromagnet assembly when it slides down the sloping surface to remove metal impurities.

[0013] As a preferred technical solution of this utility model, the screening component includes a vibrating component and a screen, wherein the screen mesh diameter is set to 4-6mm, and is used to separate rice grains from larger straw fragments.

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

[0015] 1. This utility model integrates three processes—magnetic separation, sieving, and air separation—to achieve gradient separation of metallic impurities, straw fragments, light dust, and high-density impurities, significantly improving the purity of rice.

[0016] 2. This utility model adopts a counter-fan layout, with the top horizontal airflow preferentially removing light impurities, and the bottom oblique airflow realizing density separation of rice grains and stone particles, avoiding the problem of incomplete separation by traditional single fans. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the box structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the collection drawer structure of this utility model;

[0021] In the diagram: 1. Main body of the air separator; 2. Feed inlet; 3. Box; 4. Negative pressure collection tank; 5. Magnetic separator box; 6. Screen; 7. Vibration assembly; 8. First fan; 9. Second fan; 10. Collection drawer; 11. First collection tank; 12. Second collection tank; 13. Handle. Detailed Implementation

[0022] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0023] In the attached diagram, all identical reference numerals refer to the same components.

[0024] like Figure 1-3 As shown, this utility model provides a rice air separator. The main body 1 of the rice air separator adopts a vertical box structure 3, and from top to bottom, it is arranged with a feed inlet 2, a magnetic separator 5, a screening component, an air separator component, and a storage component. After the material enters from the feed inlet 2, it goes through three processes in sequence: magnetic separation, screening, and air separation. Finally, it is classified and collected in three collection tanks of the storage component according to the density difference.

[0025] The top of the magnetic separator 5 is a sloping structure at a 35° angle to the bottom of the feed inlet 2. An electromagnet assembly is embedded at the bottom of the sloping surface, and the surface of the electromagnet is covered with a wear-resistant magnetic conductive layer. When rice containing metal impurities slides down the sloping surface, the metal is attracted to the surface of the electromagnet. Cleaning can be achieved by periodically de-energizing. One end of the magnetic separator 5 is fixed to the screen 6 via a snap-fit ​​mounting slot, and the other end of the screen 6 is connected to a vibrating motor with a vibration frequency set to 50Hz to effectively prevent material accumulation.

[0026] The vibration component 7 is connected to the housing 3 via a spring support, with a vibration amplitude of 3-5mm, to achieve the initial separation and feeding of rice and straw.

[0027] The air separation component includes a first fan 8 and a second fan 9 arranged opposite each other. The first fan 8 is installed on the top of the housing 3, with its outlet at a higher horizontal level than the second fan 9. The air velocity is set to 8 m / s, generating a horizontal airflow that blows rice husks and light dust towards the negative pressure adsorption port, which is connected to an external cyclone separator via a pipe. The outlet of the second fan 9 forms a 20° angle with the horizontal plane, with an air velocity of 6 m / s, generating a downward-sloping airflow that blows mature rice grains to the first collection tank 11 of the storage component, while high-density impurities such as stones fall vertically to the second collection tank 12 due to inertia.

[0028] The storage component has a drawer-type structure: the first collection trough 11 corresponds to the air outlet direction of the second fan 9 and collects qualified rice; the second collection trough 12 is located at the bottom of the box 3 and collects heavy debris such as stones. Each collection trough is separated by a partition with a height difference of 10mm to prevent mixing. An embedded handle 13 is installed at the front end of the collection drawer 10, with a pull resistance of ≤10N, which facilitates quick cleaning.

[0029] Work process: During operation, rice containing impurities enters through inlet 2 and passes through magnetic separator 5 to remove metal impurities; the screening component separates straw fragments, and the rice enters the air separation zone; the first blower 8 blows away light impurities, and the second blower 9 separates the rice from heavy impurities according to density; the materials enter the corresponding collection tanks to complete the grading process.

[0030] This utility model is a rice air separator that achieves efficient purification through multi-stage collaborative sorting technology: it integrates magnetic separation, screening and dual-airflow air separation system. First, it uses an inclined magnetic attraction structure to remove metal impurities, and then uses a vibrating screening component to separate straw fragments. Then, it adopts a layout of opposing fans, using horizontal airflow at the top to blow away light dust and impurities, and inclined airflow at the bottom to accurately separate rice grains and stones. Finally, it is collected by modular collection drawers 10-category collection, ensuring a dual improvement in rice purity and processing efficiency.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rice air separator, comprising an air separator body (1), wherein a feed inlet (2) is installed at the top of the air separator body (1), and a housing (3) is installed at the bottom of the feed inlet (2), characterized in that, The interior of the box (3) is sequentially equipped with a magnetic separator (5), a screening assembly, an air separation assembly, and a storage assembly along the material flow direction; The magnetic separator (5) is installed at the bottom of the feed inlet (2). A screen (6) is detachably installed at one end of the magnetic separator (5) through the mounting groove, and a vibration assembly (7) is connected to the other end of the screen (6). The air separation component includes a first fan (8) and a second fan (9) arranged opposite to each other. The air outlet of the first fan (8) is higher than the air outlet of the second fan (9). A storage component is installed on the bottom side of the air separation component. The storage component includes a drawer-type collection drawer (10), the inside of which is divided into a first collection slot (11) and a second collection slot (12) by a partition, and a handle (13) is installed at one end of the collection drawer (10).

2. The rice air separator according to claim 1, characterized in that, The first blower (8) has a negative pressure adsorption port on the opposite side box (3) wall, and a negative pressure collection tank (4) is connected to the negative pressure adsorption port to adsorb and collect the blown light debris. The air outlet direction of the second fan (9) is at an angle of 15°-30° to the horizontal plane, ensuring that the rice is blown to the first collection trough (11), while heavy debris falls directly into the second collection trough (12).

3. A rice air separator according to claim 1, characterized in that, The magnetic separator (5) is equipped with an electromagnet assembly. The top of the magnetic separator (5) is a sloping structure. The sloping surface forms a 30°-45° angle with the bottom of the feed inlet (2), so that the material can fully contact the electromagnet assembly when it slides down the sloping surface to remove metal impurities.

4. A rice air separator according to claim 1, characterized in that, The screening assembly includes a vibrating component (7) and a screen (6), wherein the screen (6) has a mesh diameter of 4-6 mm and is used to separate rice grains from larger straw fragments.

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