Impurity screening and removing equipment for rice processing

Abstract

The utility model relates to the technical field of rice processing, in particular to impurity screening and removing equipment for rice processing, which comprises an impurity screening and removing equipment main body, a dustproof box body is arranged on the impurity screening and removing equipment main body, a first belt conveyor is mounted in the dustproof box body, a belt magnetic separator is mounted above the first belt conveyor, and a second belt conveyor is mounted above the belt magnetic separator. A high-pressure air pipe is further arranged below the end of the first belt conveyor, a winnowing air outlet is integrally formed in the side face of the high-pressure air pipe, the belt magnetic separator is perpendicularly arranged relative to the first belt conveyor, and a feeding hopper is arranged above the end, away from the high-pressure air pipe, of the first belt conveyor. And a trash holding inclined plate is arranged below the first belt conveyor in the dustproof box body. According to the impurity screening and removing equipment for rice processing, efficient impurity removing treatment is carried out in a magnetic separation and winnowing mode, screening treatment is carried out through the screen, all the parts are compact in structure, the rice transferring step is reduced, and the impurity removing efficiency during rice processing can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to impurity screening and removing equipment for rice processing. Background Art

[0002] Rice is one of the most important food crops in the world, especially in Asia, where it is a staple food in many countries and regions. Rice is mainly made from rice grains through harvesting, husking and other processes. During the rice processing process, in order to ensure the quality of the final product, various impurities need to be removed, including but not limited to rice husks, dust, stones, metal fragments, etc.

[0003] In the existing rice processing process, impurities are screened and removed through equipment such as vibrating screens, flat gyratory screens, sorters, magnetic separators, and color sorters. However, in order to increase the impurity removal rate, rice needs to be transported between various equipment, resulting in low work efficiency. Utility Model Content

[0004] The utility model aims to provide an impurity screening and removing device for rice processing, so as to solve the problem that the impurity screening and removing device for rice processing on the market currently needs to transfer rice between various impurity removing devices in order to improve the impurity removal rate, resulting in low rice processing efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impurity screening and removal device for rice processing, comprising an impurity screening and removal device body, a dustproof box body is provided on the impurity screening and removal device body, and a first belt conveyor is installed in the dustproof box body, a belt magnetic separator is installed above the first belt conveyor, and a high-pressure air duct is also provided below the end of the first belt conveyor, and a wind selection outlet is integrally provided on the side of the high-pressure air duct, the belt magnetic separator is vertically arranged relative to the first belt conveyor, and a feed hopper is provided above the end of the first belt conveyor away from the high-pressure air duct, a dirt blocking inclined plate is provided below the first belt conveyor in the dustproof box body, and an inclined screening mesh plate is also installed in the dustproof box body, a guide hopper is provided below the screening mesh plate, and a third belt conveyor and a second belt conveyor are respectively installed below the guide hopper and at the lower end of the screening mesh plate, an impurity guide inclined plate is provided at the end of the dustproof box body, and a first dirt collecting frame and a second dirt collecting frame are respectively placed below the impurity guide inclined plate and below the dirt blocking inclined plate.

[0006] Preferably, the length of the belt magnetic separator is greater than the width of the first belt conveyor, and one end of the belt magnetic separator is located above the second dirt collecting frame.

[0007] Preferably, a guide plate is bolted to one end of the belt magnetic separator close to the feed hopper, and the bottom of the guide plate is a bent structure.

[0008] Preferably, the bent portion of the guide plate forms combing teeth through slotting, and the combing teeth are clearance-matched with the first belt conveyor.

[0009] Preferably, a dustproof box at the lower part of the first belt conveyor is symmetrically provided with belt cleaning air outlets, and the belt cleaning air outlets are snap-fitted and installed in the dustproof box.

[0010] Preferably, a cleaning brush is fixed by screws in the middle between the belt cleaning air outlets, and the brush body structure of the cleaning brush is in contact with and cooperates with the first belt conveyor.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the impurity screening and removal equipment for rice processing performs efficient impurity removal by means of magnetic separation and air separation, and performs screening by means of a screen, each component has a compact structure, reduces the rice transfer steps, and can effectively improve the efficiency of impurity removal during rice processing. The impurity screening and removal equipment for rice processing disperses the rice during the transportation process through the first belt conveyor, facilitates magnetic separation, and allows the rice to be air-separated immediately after the magnetic separation, the air-separated rice is graded by screening, and the first belt conveyor can be efficiently cleaned, effectively reducing dust adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of an impurity screening and removal device for rice processing according to the utility model;

[0013] Figure 2 The utility model is a device for screening and removing impurities for rice processing Figure 1 The enlarged structural diagram at A in the middle;

[0014] Figure 3 It is a schematic side view of the structure of the position of the high-pressure air duct of the impurity screening and removal device for rice processing relative to the first belt conveyor of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the belt cleaning air outlet of the impurity screening and removal equipment for rice processing in the utility model relative to the first belt conveyor;

[0016] Figure 5 This is a schematic diagram of the installation position structure of a screening mesh plate of an impurity screening and removal device for rice processing according to the utility model;

[0017] Figure 6 The utility model is a schematic diagram of the structure of combing teeth on a material guide plate of an impurity screening and removing device for rice processing.

[0018] In the figure: 1. Impurity screening and removal equipment body; 2. Dust-proof box; 3. Impurity guide inclined plate; 4. First pollution collection frame; 5. First belt conveyor; 6. Feed hopper; 7. Guide plate; 701. Combing teeth; 8. Belt magnetic separator; 9. High-pressure air duct; 901. Air separation outlet; 10. Second belt conveyor; 11. Guide hopper; 12. Belt cleaning outlet; 13. Third belt conveyor; 14. Cleaning brush; 15. Screening mesh plate; 16. Impurity blocking inclined plate; 17. Second pollution collection frame. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 6 The utility model provides a technical solution: an impurity screening and removing device for rice processing, comprising an impurity screening and removing device body 1, a dustproof box 2 is provided on the impurity screening and removing device body 1, and a first belt conveyor 5 is installed in the dustproof box 2, a belt magnetic separator 8 is installed above the first belt conveyor 5, and a high-pressure air duct 9 is also provided below the end of the first belt conveyor 5, and a wind selection outlet 901 is integrally provided on the side of the high-pressure air duct 9, the belt magnetic separator 8 is vertically arranged relative to the first belt conveyor 5, and is away from the high-pressure air duct 9. A feed hopper 6 is provided above the end of the first belt conveyor 5 of the air duct 9, the length of the belt magnetic separator 8 is greater than the width of the first belt conveyor 5, and one end of the belt magnetic separator 8 is located above the second pollution collecting frame 17; wherein, the belt magnetic separator 8 uses belt transmission to enable the magnetic impurities adsorbed on the belt magnetic separator 8 to move to the second pollution collecting frame 17, and the belt magnetic separator 8 performs impurity removal treatment at one end of the second pollution collecting frame 17, and the magnetic impurities can be effectively removed by magnetically separating the rice through the belt magnetic separator 8.

[0021] The guide plate 7 is bolted to one end of the belt magnetic separator 8 near the feed hopper 6, and the bottom of the guide plate 7 is a bent structure. The bent portion of the guide plate 7 can limit the height of the rice entering the area below the belt magnetic separator 8 to avoid the rice thickness being too large and affecting the magnetic separation effect. The bent portion of the guide plate 7 is grooved to form combing teeth 701, and the combing teeth 701 are gap-matched with the first belt conveyor 5; wherein, the combing teeth 701 are used for the guide plate 7 to comb the rice to ensure that the rice is evenly distributed on the first belt conveyor 5, and a dirt blocking inclined plate 16 is provided below the first belt conveyor 5 in the dustproof box 2, and a dirt blocking inclined plate 16 is also installed in the dustproof box 2 A tilted screening mesh plate 15 is provided, a guide hopper 11 is provided below the screening mesh plate 15, and a third belt conveyor 13 and a second belt conveyor 10 are respectively installed below the guide hopper 11 and at the lower end of the screening mesh plate 15. Belt cleaning air outlets 12 are symmetrically provided on the dustproof box 2 at the lower part of the first belt conveyor 5, and the belt cleaning air outlets 12 are snap-fitted and installed in the dustproof box 2. The belt cleaning air outlets 12 and the high-pressure air duct 9 use the same air supply source. The first belt conveyor 5 is cleaned by compressed gas, which can effectively remove dust on the first belt conveyor 5, and the dust falls onto the dirt-blocking inclined plate 16 and is collected in the second dirt collecting frame 17.

[0022] A cleaning brush 14 is fixed by screws in the middle between the belt cleaning air outlets 12, and the brush body structure of the cleaning brush 14 is in contact with the first belt conveyor 5. The cleaning brush 14 can remove impurities that are tightly attached to the first belt conveyor 5 to ensure the cleanliness of the first belt conveyor 5, so that the first belt conveyor 5 can better remove impurities and transport the rice. The second belt conveyor 10 and the third belt conveyor 13 are used for transportation after rice grading, so as to carry out subsequent processing of the rice. An impurity guide inclined plate 3 is provided at the end of the dustproof box 2, and a first pollution collecting frame 4 and a second pollution collecting frame 17 are respectively placed under the impurity guide inclined plate 3 and under the pollution blocking inclined plate 16.

[0023] Working principle: When using the impurity screening and removal equipment for rice processing, first, the rice is loaded through the feed hopper 6, and the rice falls onto the first belt conveyor 5. The first belt conveyor 5 is conveyed under the drive of the motor. When the rice passes through the bending part of the guide plate 7, it is limited in height and evenly distributed with the cooperation of the combing teeth 701, so that the thickness of the rice reaching the area below the belt magnetic separator 8 is consistent. The belt magnetic separator 8 performs magnetic separation and impurity removal on the rice during the motor transmission process. The magnetic impurities are adsorbed by the belt magnetic separator 8, and the magnetic impurities are removed and fall into the second pollution collection frame 17 after moving to the top of the second pollution collection frame 17. After the magnetically selected rice falls from the first belt conveyor 5, it is air-selected by the gas blown out from the air selection outlet 901 through the high-pressure air duct 9. The rice with large mass falls on the screening mesh plate 15, and Small impurities are blown farther away and introduced into the first pollution collection frame 4 by the impurity guide inclined plate 3. The dustproof box 2 plays a role in preventing dust from being raised during the impurity removal process. The high-pressure gas blown out from the belt cleaning outlet 12 is used to purge the lower part of the first belt conveyor 5, and is cleaned in conjunction with the cleaning brush 14 to ensure that the first belt conveyor 5 is clean and reduce the burden of impurity removal. The swept impurities are collected into the second pollution collection frame 17 by the impurity blocking inclined plate 16. The rice falling on the screening mesh plate 15 is vibrated and screened under the drive of the vibration motor. After the rice is graded, the rice with large particles is transported by the second belt conveyor 10, and the rice with small particles falls into the guide hopper 11 and is transported by the third belt conveyor 13, thereby realizing efficient impurity removal and grading of the impurity screening and removal equipment body 1, thereby completing a series of tasks.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An impurity screening and removal device for rice processing, comprising an impurity screening and removal device body (1), characterized in that: The impurity screening and removal device body (1) is provided with a dustproof box (2), and a first belt conveyor (5) is installed in the dustproof box (2), a belt magnetic separator (8) is installed above the first belt conveyor (5), and a high-pressure air duct (9) is also provided below the end of the first belt conveyor (5), and a wind separation outlet (901) is integrally provided on the side of the high-pressure air duct (9), the belt magnetic separator (8) is vertically arranged relative to the first belt conveyor (5), and a feed hopper (6) is provided above the end of the first belt conveyor (5) away from the high-pressure air duct (9), and the dustproof box (2) is provided with a dustproof box (2). A dirt blocking inclined plate (16) is provided below the first belt conveyor (5), and an inclined screening mesh plate (15) is also installed in the dustproof box (2). A guide hopper (11) is provided below the screening mesh plate (15), and a third belt conveyor (13) and a second belt conveyor (10) are installed below the guide hopper (11) and at the lower end of the screening mesh plate (15), respectively. An impurity guide inclined plate (3) is provided at the end of the dustproof box (2), and a first dirt collection frame (4) and a second dirt collection frame (17) are placed below the impurity guide inclined plate (3) and below the dirt blocking inclined plate (16), respectively.

2. The impurity screening and removal device for rice processing according to claim 1, characterized in that: The length of the belt magnetic separator (8) is greater than the width of the first belt conveyor (5), and one end of the belt magnetic separator (8) is located above the second dirt collecting frame (17).

3. The impurity screening and removal device for rice processing according to claim 1, characterized in that: A material guide plate (7) is bolted to one end of the belt magnetic separator (8) close to the feed hopper (6), and the bottom of the material guide plate (7) is a bent structure.

4. The impurity screening and removal device for rice processing according to claim 3, characterized in that: The bent portion of the guide plate (7) forms combing teeth (701) by means of slotting, and the combing teeth (701) are clearance-matched with the first belt conveyor (5).

5. The impurity screening and removal device for rice processing according to claim 1, characterized in that: Belt cleaning air outlets (12) are symmetrically arranged on the dustproof box (2) at the lower part of the first belt conveyor (5), and the belt cleaning air outlets (12) are snap-fitted and installed in the dustproof box (2).

6. The impurity screening and removal device for rice processing according to claim 5, characterized in that: A cleaning brush (14) is fixed via screws in the middle between the belt cleaning air outlets (12), and a brush body structure of the cleaning brush (14) is in contact with and cooperates with the first belt conveyor (5).

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