Rice impurity screening device

Abstract

The utility model discloses a rice impurity screening device, which belongs to the technical field of rice processing, and comprises a flat plate, the inner wall of a screening tank is provided with a sliding chute positioned below a material guide plate, the screening tank is internally provided with a screening box positioned below the material guide plate, the outer wall of the screening box is fixedly connected with two sliding blocks positioned in the sliding chute, and the sliding blocks are arranged in the sliding chute. The two sliding blocks are slidably connected to the interiors of the sliding grooves, a discharging opening is formed in the lower end face of the screening tank, rice needing to be screened is put into the screening tank through the feeding opening, the rice needing to be screened falls on the upper end face of a first screening plate, large impurities such as rice straw and weeds are screened out through the first screening plate, and the screening efficiency is improved. Impurities are pushed to the slag discharging pipe to be discharged in the tangential direction of the outer circle of the first screening plate through the arc-shaped material pushing scraping plate, rice husks and gravel larger than rice are screened out through the screening box, and the rice screening device has the advantages of being high in working efficiency and good in screening effect.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice impurity screening device. Background Art

[0002] Rice is the staple food of people in most parts of China. Rice is made from paddy rice after processes such as cleaning, husking, milling and finishing. Paddy rice is often mixed with various impurities such as sand, rice straw and weed seeds. When paddy rice is crushed into rice during the rice processing, a lot of broken rice will be produced, and the rice will also be mixed with a lot of husks. If the impurities and broken rice are not removed, the quality of the rice will be reduced. Therefore, the rice needs to be screened during the rice processing process.

[0003] At present, large rice production enterprises mostly use large-scale automated equipment to screen and process rice. However, large-scale automated equipment is expensive and not suitable for small enterprises. Small enterprises mostly screen and process rice in traditional ways, such as manually screening rice using sieve plates. Manual screening is labor-intensive, time-consuming and labor-intensive, and has low work efficiency. In addition, most existing rice screening devices can only filter out large particles of impurities, but cannot filter out small particles of broken rice. The screening effect is poor, resulting in low rice quality. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a rice impurity screening device, which has the characteristics of high working efficiency and good screening effect.

[0005] The utility model is implemented as follows: a rice impurity screening device comprises a flat plate, the upper end surface of the flat plate is fixedly connected with a support frame, the upper end surface of the support frame penetrates and is fixedly connected with a screening tank, the upper end surface of the screening tank is provided with a feeding port, the interior of the screening tank is fixedly connected with a first screening plate, the inner wall of the screening tank is fixedly connected with a material guide plate located below the first screening plate, the inner wall of the screening tank is provided with a chute located below the material guide plate, the interior of the screening tank is provided with a screening box located below the material guide plate, the outer wall of the screening box is fixedly connected with two sliders located inside the chute, the two sliders are slidably connected to the interior of the chute, and the lower end surface of the screening tank is provided with a discharge port;

[0006] A vibration motor is installed on the upper end surface of the flat plate, and a distribution box is fixedly connected to the output end of the vibration motor, and a second sieve plate is fixedly connected to the interior of the distribution box, and an inclined plate located below the second sieve plate is fixedly connected to the interior of the distribution box, and a first discharge port flush with the second sieve plate is penetrated through the side wall of the distribution box, and a second discharge port flush with the inclined plate is penetrated through the other side wall of the distribution box.

[0007] In order to make the screening effect of the device better, as a preferred rice impurity screening device of the utility model, the upper end face of the first sieve plate is rotatably connected to the main shaft, the outer wall of the main shaft is fixedly connected to the scraper, the scraper is abutted against the upper end face of the first sieve plate, the side wall of the screening tank is connected to a slag discharge pipe flush with the first sieve plate, and the side wall of the screening tank is provided with a slag discharge port located below the slag discharge pipe.

[0008] In order to increase the working efficiency of the device, as a preferred rice impurity screening device of the utility model, a first drive motor is installed on the upper end surface of the screening tank, and the output end of the first drive motor is fixedly connected to one end of the main shaft.

[0009] In order to make the screening efficiency of the device higher, as a preferred rice impurity screening device of the utility model, a second drive motor located on the side of the screening tank is installed on the upper end surface of the support frame, and the output end of the second drive motor is fixedly connected to a turntable, one end of the turntable is fixedly connected to a rotating shaft, the outer wall of the rotating shaft is rotatably connected to a connecting rod, the other end of the connecting rod is movably connected to a movable rod, and the other end of the movable rod passes through the side wall of the screening tank and is fixedly connected to the outer wall of the screen box.

[0010] In order to assist the vibration of the distribution box, as a preferred rice impurity screening device of the utility model, a plurality of symmetrically distributed supporting springs are arranged between the distribution box and the flat plate.

[0011] In order to make rice screening easier, as a preferred rice impurity screening device of the utility model, the guide plate and the discharge port are both configured to be funnel-shaped.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model throws rice to be screened into the screening tank through a feeding port, so that the rice to be screened falls on the upper end surface of a first screen plate, and larger impurities such as rice stalks and weeds are screened out through the first screen plate, and the impurities are pushed to a slag discharge pipe for discharge along a tangent direction of an outer circle of the first screen plate through an arc-shaped material pushing scraper, and lighter rice husks and small sand and gravel are screened out through a screen box. After the device stops working, the rice husks and sand and gravel inside the screen box are discharged through the slag discharge port, and the rice mixed with broken rice enters a distribution box through the discharge port, and the distribution box is vibrated through the output end of a vibration motor, so that the second screen plate drives the rice mixed with broken rice to vibrate, so that the broken rice falls to the upper end surface of the inclined plate, and then is discharged through the second discharge port, and at the same time, the screened rice is discharged from the first discharge port, so that the operation is simpler and the screening effect is better.

[0014] In addition, the utility model drives the main shaft to rotate through the output end of the first drive motor, so that the main shaft drives the scraper to rotate, and the impurities are pushed to the slag discharge pipe along the tangent direction of the outer circle of the first screen plate through the arc-shaped pushing scraper for discharge, and at the same time, the rice that needs to be screened is more likely to fall under the first screen plate, and the turntable is driven by the output end of the second drive motor, so that the turntable drives the rotating shaft to rotate, and the connecting rod drives the movable rod to reciprocate, so that the screen box drives the slider to reciprocate inside the slide slot, so that the rice that needs to be screened in the screen box is easier to fall, thereby improving the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall structural diagram of a rice impurity screening device of the utility model;

[0016] Figure 2 It is the overall cutaway structural diagram of the utility model;

[0017] Figure 3 It is the internal decomposition structure diagram of the utility model;

[0018] Figure 4 For this utility model Figure 2 A is the enlarged structural diagram.

[0019] In the figure, 1. flat plate; 2. support frame; 3. screening tank; 4. first screen plate; 5. first drive motor; 6. feeding port; 7. main shaft; 8. scraper; 9. slag discharge pipe; 10. guide plate; 11. chute; 12. screen box; 13. slider; 14. second drive motor; 15. turntable; 16. rotating shaft; 17. connecting rod; 18. movable rod; 19. discharge port; 20. vibration motor; 21. material distribution box; 22. second screen plate; 23. inclined plate; 24. first discharge port; 25. second discharge port; 26. support spring; 27. slag discharge port. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0022] See also Figure 1-4 A rice impurity screening device comprises a flat plate 1, the upper end surface of the flat plate 1 is fixedly connected with a support frame 2, the upper end surface of the support frame 2 is penetrated and fixedly connected with a screening tank 3, the upper end surface of the screening tank 3 is provided with a feeding port 6, the interior of the screening tank 3 is fixedly connected with a first screen plate 4, the inner wall of the screening tank 3 is fixedly connected with a material guide plate 10 located below the first screen plate 4, the inner wall of the screening tank 3 is provided with a chute 11 located below the material guide plate 10, the interior of the screening tank 3 is provided with a screen box 12 located below the material guide plate 10, the outer wall of the screen box 12 is fixedly connected with two sliders 13 located inside the chute 11, the two sliders 13 are slidably connected to the inside of the chute 11, and the lower end surface of the screening tank 3 is provided with a discharge port 19;

[0023] A vibration motor 20 is installed on the upper end surface of the flat plate 1, and a distribution box 21 is fixedly connected to the output end of the vibration motor 20, and a second sieve plate 22 is fixedly connected to the inside of the distribution box 21, and an inclined plate 23 located below the second sieve plate 22 is fixedly connected to the inside of the distribution box 21. A first discharge port 24 flush with the second sieve plate 22 is penetrated through the side wall of the distribution box 21, and a second discharge port 25 flush with the inclined plate 23 is penetrated through the other side wall of the distribution box 21.

[0024] In this embodiment: the rice to be screened is put into the screening tank 3 through the feeding port 6, so that the rice to be screened falls on the upper end surface of the first screen plate 4, and the larger impurities such as rice straw and weeds are screened out through the first screen plate 4, and the impurities are pushed to the slag discharge pipe 9 for discharge through the scraper 8. At the same time, the rice to be screened on the first screen plate 4 is dropped onto the guide plate 10 through the scraper 8, and the rice to be screened falls into the screen box 12 through the guide plate 10, and the husks and gravels larger than the rice are screened out through the screen box 12. After the device stops working, the husks and gravels inside the screen box 12 are discharged through the slag discharge port 27, so that the rice mixed with broken rice enters the distribution box 21 through the discharge port 19, and the working efficiency is higher;

[0025] The distribution box 21 is vibrated through the output end of the vibration motor 20, so that the second screen plate 22 drives the rice mixed with broken rice to vibrate, so that the broken rice falls to the upper end surface of the inclined plate 23 and is then discharged through the second discharge port 25. At the same time, the screened rice is discharged from the first discharge port 24. The operation is simpler and the screening effect is better.

[0026] As a technical optimization scheme of the utility model, the upper end surface of the first sieve plate 4 is rotatably connected to the main shaft 7, the outer wall of the main shaft 7 is fixedly connected to the scraper 8, the scraper 8 abuts against the upper end surface of the first sieve plate 4, the side wall of the screening tank 3 is connected to a slag discharge pipe 9 flush with the first sieve plate 4, and the side wall of the screening tank 3 is provided with a slag discharge port 27 located below the slag discharge pipe 9.

[0027] In this embodiment: the impurities on the upper end surface of the first sieve plate 4 are pushed to the slag discharge pipe 9 along the tangent direction of the outer circle of the first sieve plate 4 by the arc-shaped push scraper 8, and the rice to be screened is more likely to fall under the first sieve plate 4, and the husks and sand and gravel in the rice are screened out by the screen box 12, and the husks and sand and gravel remain in the inside of the screen box 12. After the rice screening is completed, the device stops working, and the husks and sand and gravel in the screen box 12 are discharged through the slag discharge port 27, so that the screening effect of the device is better.

[0028] As a technical optimization solution of the utility model, a first drive motor 5 is installed on the upper end surface of the screening tank 3 , and the output end of the first drive motor 5 is fixedly connected to one end of the main shaft 7 .

[0029] In this embodiment, the main shaft 7 is driven to rotate by the output end of the first driving motor 5, so that the main shaft 7 drives the scraper 8 to rotate, so that the working efficiency of the device is higher.

[0030] As a technical optimization scheme of the utility model, a second drive motor 14 located on the side of the screening tank 3 is installed on the upper end surface of the support frame 2, and the output end of the second drive motor 14 is fixedly connected to a turntable 15, one end of the turntable 15 is fixedly connected to a rotating shaft 16, the outer wall of the rotating shaft 16 is rotatably connected to a connecting rod 17, the other end of the connecting rod 17 is movably connected to a movable rod 18, and the other end of the movable rod 18 passes through the side wall of the screening tank 3 and is fixedly connected to the outer wall of the screen box 12.

[0031] In this embodiment: the turntable 15 is driven by the output end of the second drive motor 14, so that the turntable 15 drives the rotating shaft 16 to rotate, and the connecting rod 17 drives the movable rod 18 to reciprocate, so that the screen box 12 drives the slider 13 to reciprocate inside the slide chute 11, so that the rice to be screened in the screen box 12 is easier to fall, thereby improving the working efficiency of the device.

[0032] As a technical optimization solution of the present invention, a plurality of symmetrically distributed support springs 26 are provided between the material distribution box 21 and the flat plate 1 .

[0033] In this embodiment: the support spring 26 assists the distribution box 21 in vibrating, and at the same time makes the distribution box 21 more stable.

[0034] As a technical optimization solution of the present utility model, the material guide plate 10 and the material discharge port 19 are both configured to be funnel-shaped.

[0035] In this embodiment, the funnel-shaped guide plate 10 makes it easier for the rice to be screened to fall into the screen box 12, and the funnel-shaped discharge port 19 makes it easier for the rice to be screened to fall into the distribution box 21, thereby preventing the waste of rice.

[0036] The working principle and use process of the utility model are as follows: first, the rice to be screened is put into the screening tank 3 through the feeding port 6, so that the rice to be screened falls on the upper end surface of the first screen plate 4, and the larger impurities such as rice stalks and weeds are screened out through the first screen plate 4, and the main shaft 7 is driven to rotate through the output end of the first drive motor 5, so that the main shaft 7 drives the scraper 8 to rotate, and the impurities on the upper end surface of the first screen plate 4 are pushed to the slag discharge pipe 9 for discharge along the tangent direction of the outer circle of the first screen plate 4 through the arc-shaped pushing scraper 8, and at the same time, the rice to be screened is made to fall more easily to the bottom of the first screen plate 4, and then the rice to be screened is made to fall into the interior of the screen box 12 through the guide plate 10, and the turntable 15 is driven by the output end of the second drive motor 14, so that The turntable 15 drives the rotating shaft 16 to rotate, so that the connecting rod 17 drives the movable rod 18 to do reciprocating motion, so that the screen box 12 drives the slider 13 to reciprocate inside the slide 11, so that the screen box 12 will screen out the husks and sand and gravel larger than the rice, and discharge the husks and sand and gravel inside the screen box 12 through the slag discharge port 27, while making it easier for the rice to be screened in the screen box 12 to fall, and then enter the distribution box 21 through the discharge port 19, and the distribution box 21 is vibrated by the output end of the vibration motor 20, so that the second screen plate 22 drives the rice mixed with broken rice to vibrate, so that the broken rice falls to the upper end surface of the inclined plate 23, and then is discharged through the second discharge port 25, and at the same time, the screened rice is discharged from the first discharge port 24, completing the screening of rice.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rice impurity screening device, comprising a flat plate (1), characterized in that: The upper end surface of the flat plate (1) is fixedly connected to a support frame (2), the upper end surface of the support frame (2) is penetrated and fixedly connected to a screening tank (3), the upper end surface of the screening tank (3) is provided with a feeding port (6), the interior of the screening tank (3) is fixedly connected to a first screening plate (4), the inner wall of the screening tank (3) is fixedly connected to a material guide plate (10) located below the first screening plate (4), the inner wall of the screening tank (3) is provided with a chute (11) located below the material guide plate (10), the interior of the screening tank (3) is provided with a screening box (12) located below the material guide plate (10), the outer wall of the screening box (12) is fixedly connected to two sliding blocks (13) located inside the chute (11), the two sliding blocks (13) are both slidably connected to the inside of the chute (11), and the lower end surface of the screening tank (3) is provided with a discharge port (19); A vibration motor (20) is installed on the upper end surface of the flat plate (1); the output end of the vibration motor (20) is fixedly connected to a distribution box (21); the interior of the distribution box (21) is fixedly connected to a second sieve plate (22); the interior of the distribution box (21) is fixedly connected to an inclined plate (23) located below the second sieve plate (22); a first discharge port (24) flush with the second sieve plate (22) is formed through a side wall of the distribution box (21); and a second discharge port (25) flush with the inclined plate (23) is formed through another side wall of the distribution box (21).

2. A rice impurity screening device according to claim 1, characterized in that: The upper end surface of the first sieve plate (4) is rotatably connected to a main shaft (7), the outer wall of the main shaft (7) is fixedly connected to a scraper (8), the scraper (8) abuts against the upper end surface of the first sieve plate (4), the side wall of the screening tank (3) is connected to a slag discharge pipe (9) flush with the first sieve plate (4), and the side wall of the screening tank (3) is provided with a slag discharge port (27) located below the slag discharge pipe (9).

3. A rice impurity screening device according to claim 2, characterized in that: A first drive motor (5) is installed on the upper end surface of the screening tank (3), and an output end of the first drive motor (5) is fixedly connected to one end of the main shaft (7).

4. A rice impurity screening device according to claim 1, characterized in that: A second drive motor (14) located on the side of the screening tank (3) is installed on the upper end surface of the support frame (2); the output end of the second drive motor (14) is fixedly connected to a turntable (15); one end of the turntable (15) is fixedly connected to a rotating shaft (16); the outer wall of the rotating shaft (16) is rotatably connected to a connecting rod (17); the other end of the connecting rod (17) is movably connected to a movable rod (18); the other end of the movable rod (18) passes through the side wall of the screening tank (3) and is fixedly connected to the outer wall of the screen box (12).

5. A rice impurity screening device according to claim 1, characterized in that: A plurality of symmetrically distributed supporting springs (26) are arranged between the material distribution box (21) and the flat plate (1).

6. A rice impurity screening device according to claim 1, characterized in that: The material guide plate (10) and the material discharge port (19) are both configured to be funnel-shaped.

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