Multi-stage screening device for millet processing

Abstract

The utility model provides a multistage screening device for millet processing, which comprises a box body and a feeding bin, a multistage screening assembly and a discharging inclined plate are arranged in the box body, the multistage screening assembly is connected with a cleaning mechanism used for preventing a screening frame from being blocked, and the cleaning mechanism is arranged at the bottom of the multistage screening assembly. The function of cleaning the screening holes of the screening frame is achieved, the screening effect is effectively prevented from being affected by blocking of the holes, the linkage effect between the screening frame and the multi-stage screening assembly is achieved, flexible layout is achieved, and the overall performance is improved. A first bevel gear fixed to the other end of a first supporting rod is meshed with a second bevel gear arranged at one end of a screw rod, so that a second movable sliding block drives a scraping plate to slide back and forth on the bottom face of a screening frame along the screw rod in the millet screening process, and the scraping plate makes contact with the bottom of the screening frame; the millet can be ejected out or scraped from the aperture, and the millet blocked in the aperture can be quickly cleared, so that the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a multi-stage screening device for millet processing. Background Art

[0002] The screening device includes a frame, a vibration mechanism and a screening layer, and the screening layer is used to set multiple screening layers to achieve efficient multi-stage screening of the material to be screened. In the grain processing process, the grading and screening of grain particles is an important processing procedure. The grains are separated and screened by the screening device. In the production and processing of millet, the millet needs to be screened by the screening device.

[0003] The prior art discloses a grading screen for yellow millet processing (publication number: CN215235847U), which comprises a box body, wherein a first screen and a second screen are arranged inside the box body, and the millet is graded and screened by using the first screen and the second screen.

[0004] However, the above technical solution and the prior art still have the following defects: the material to be screened in the device passes through the first sieve and the second sieve for separation and screening; however, since the millet particles are of different sizes, some of the millet particles are easily stuck in the aperture of the sieve, causing the sieve to be blocked. The blockage of the sieve will cause a decrease in the screening efficiency. When the aperture is blocked more, the device needs to be stopped to clean the blockage, which affects the screening efficiency of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage screening device for millet processing to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multi-stage screening device for millet processing comprises a box body and a feed bin, wherein the feed bin is arranged at the top center of the box body, a multi-stage screening component and a discharging inclined plate are arranged inside the box body, the multi-stage screening component is connected to a cleaning mechanism for avoiding blockage of the screening frame, the cleaning mechanism comprises a first bevel gear, a second bevel gear, a screw, a second movable slider, a sliding rod and a scraper, the first bevel gear is connected and fixed to the multi-stage screening component, and the first bevel gear is meshedly connected to the second bevel gear arranged at one end of the screw, one end of the second movable slider is internally threadedly connected to the screw, and the other end of the second movable slider is slidably connected to the sliding rod arranged at the bottom of the screw, the two ends of the screw are rotatably connected to the inside of a third support seat fixed to one side of the box body, and the two ends of the second movable slider are provided with scrapers, and the scrapers are arranged at the bottom of the multi-stage screening component.

[0008] Preferably, a through groove is provided on one side of the box body, and the through groove is slidably connected to one end of the scraper.

[0009] Preferably, the multi-stage screening assembly includes a driving mechanism, a first screening frame and a second screening frame, the driving mechanism includes a servo motor, a first gear, a second gear, a first pulley, a first support rod, a transmission belt, a second pulley, a second support rod, an L-shaped rod, a connecting rod and a rotating seat, the servo motor is fixedly installed on one side of the top end of the box body, and the output shaft of the servo motor is fixedly connected to the first gear, the first gear is meshed and connected with the second gear arranged at one end of the first support rod, a first pulley is arranged on one side of the second gear, the first pulley is transmission connected to the second pulley arranged at one end of the second support rod through a transmission belt, one end of the second support rod and the first support rod is fixedly connected to one end of the L-shaped rod, the other end of the L-shaped rod passes through the interior of the elongated groove and is rotatably connected to one end of the connecting rod, the other end of the connecting rod is rotatably connected to a rotating seat arranged at the center of one end of the first screening frame and the second screening frame, and both sides of the first screening frame and the second screening frame are slidably connected to the inner side of the box body.

[0010] Preferably, a first movable slider is provided on both sides of the first screening box and the second screening box, the first movable slider is slidably connected to the sliding groove on the inner side of the sliding rail, the sliding rail is symmetrically arranged on the inner walls on both sides of the box body, and a scraper is provided at the bottom of the first screening box and the second screening box, and the top surface of the scraper is slidably connected to the bottom surface of the first screening box and the second screening box.

[0011] Preferably, both ends of the first support rod and the second support rod are rotatably connected to the inside of a first support seat and a second support seat arranged on one side of the outer side of the box body, respectively, and the other end of the first support rod is fixedly mounted with a first bevel gear.

[0012] Preferably, a first discharge port is opened on the other side of the box body, a first discharge bin is arranged inside the first discharge port, and the first discharge bin is tiltedly arranged at the bottom of the openings on the first screening frame and the second screening frame.

[0013] Preferably, the discharging inclined plate is arranged inside the bottom end of the box body, and the discharging lower end of the discharging inclined plate is arranged in the second discharging port, and a second discharging bin is arranged outside the second discharging port.

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

[0015] 1. By arranging a multi-stage screening component inside the box, the function of multi-stage screening of millet is realized, and the quality of millet screening is improved. The servo motor is powered on to drive the first gear to drive the second gear at one end of the first support rod to rotate. Since the second gear and the first pulley are both arranged at one end of the first support rod, the first pulley is connected to the second pulley arranged at one end of the second support rod through a transmission belt, so as to drive the first support rod and the second support rod to rotate simultaneously. Through the rotation of the first support rod and the second support rod and the action of the L-shaped rod and the connecting rod, the first screening frame and the second screening frame are synchronously driven to slide back and forth along the slide groove inside the box, so that the millet in the screening frame rolls back and forth in the frame, thereby realizing multi-stage screening of millet;

[0016] 2. By arranging a cleaning mechanism at the bottom of the first screening frame and the second screening frame, the function of synchronously cleaning the screening apertures of the screening frames can be realized, which effectively prevents millet from getting stuck in the aperture, causing clogging of the aperture and affecting the screening effect. The setting of the cleaning mechanism and the driving mechanism are used to achieve a linkage effect, realize a flexible layout, and improve the overall performance. The first bevel gear fixed at the other end of the first support rod is engaged with the second bevel gear arranged at one end of the screw rod. The rotation of the first support rod simultaneously drives the screw rod to rotate, so that the second movable slider drives the scraper at the bottom of the screening frame along the screw rod to slide back and forth on the bottom surface of the screening frame. The scraper rod contacts the bottom of the screening frame, and can push or scrape the millet out of the aperture, so that the millet blocked in the screening aperture can be quickly removed, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the box body of the utility model

[0019] Figure 3 This is a schematic diagram of the structure of the multi-stage screening component of the utility model;

[0020] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of part of the driving mechanism of the utility model;

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the box body of the present utility model.

[0023] In the figure: 1, box; 2, feed bin; 3, driving mechanism; 301, servo motor; 302, first gear; 303, second gear; 304, first pulley; 305, first support rod; 306, transmission belt; 307, second pulley; 308, second support rod; 309, L-shaped rod; 310, connecting rod; 311, rotating seat; 4, first screening frame; 5, second screening frame; 6, first moving slider; 7, slide rail ; 8. chute; 9. first discharge bin; 10. first discharge port; 11. discharge inclined plate; 12. second discharge port; 13. second discharge bin; 14. first support seat; 15. second support seat; 16. long groove; 17. cleaning mechanism; 171. first bevel gear; 172. second bevel gear; 173. screw; 174. second movable slider; 175. slide rod; 176. scraper; 18. third support seat; 19. through groove. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-6 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A multi-stage screening device for millet processing, comprising a box body 1 and a feed bin 2, the feed bin 2 is arranged at the top center of the box body 1, a multi-stage screening component and a discharging inclined plate 11 are arranged inside the box body 1, the multi-stage screening component is connected to a cleaning mechanism 17 for avoiding clogging of the screening frame, the multi-stage screening component comprises a driving mechanism 3, a first screening frame 4 and a second screening frame 5, the driving mechanism 3 comprises a servo motor 301, a first gear 302, a second gear 303, a first pulley 304, a first support rod 305, a transmission belt 306, a second pulley 307, a second support rod 308, an L-shaped rod 309, a connecting rod 310 and a rotating seat 311, the servo motor 301 is fixedly installed on one side of the top of the box body 1, and the output shaft of the servo motor 301 is fixedly connected to the first gear 302, and the first gear 302 is meshed with the second gear 303 arranged at one end of the first support rod 305 A first pulley 304 is provided on one side of the second gear 303, and the first pulley 304 is transmission-connected to a second pulley 307 arranged at one end of the second support rod 308 through a transmission belt 306, and both ends of the first support rod 305 and the second support rod 308 are respectively rotationally connected to the inside of the first support seat 14 and the second support seat 15 arranged on the outer side of the box body 1, and the other end of the first support rod 305 is fixedly installed with a first bevel gear 171, and one end of the second support rod 308 and the first support rod 305 are fixedly connected to one end of an L-shaped rod 309, and the other end of the L-shaped rod 309 passes through the interior of the elongated groove 16 and is rotationally connected to one end of a connecting rod 310, and the other end of the connecting rod 310 is rotationally connected to a rotating seat 311 arranged at the center of one end of the first screening frame 4 and the second screening frame 5, and both sides of the first screening frame 4 and the second screening frame 5 are slidingly connected to the inner side of the box body 1.

[0028] A first movable slider 6 is arranged on both sides of the first screening frame 4 and the second screening frame 5. The first movable slider 6 is slidably connected to the slide groove 8 on the inner side of the slide rail 7. The slide rail 7 is symmetrically arranged on the inner walls of both sides of the box body 1. A scraper 176 is arranged at the bottom of the first screening frame 4 and the second screening frame 5. The top surface of the scraper 176 is slidably connected to the bottom surface of the first screening frame 4 and the second screening frame 5.

[0029] In this embodiment, a multi-stage screening component is arranged inside the box body 1 to realize the function of multi-stage screening of millet and improve the quality of millet screening. The servo motor 301 is powered on and driven to realize that the first gear 302 drives the second gear 303 at one end of the first support rod 305 to rotate. Since the second gear 303 and the first pulley 304 are both arranged at one end of the first support rod 305, the first support rod 305 drives the first pulley 304 to rotate, and the transmission belt 306 can drive the second pulley 307 on the second support rod 308 to rotate. Through the rotation of the first support rod 305 and the second support rod 308, through the action of the L-shaped rod 309 and the connecting rod 310, the first screening frame 4 and the second screening frame 5 are driven to slide back and forth along the slide groove 8 inside the box body 1, so that the millet in the screening frame rolls back and forth in the frame, thereby realizing multi-stage screening of millet.

[0030] A first discharge port 10 is provided on the other side of the box body 1 , and a first discharge bin 9 is provided inside the first discharge port 10 . The first discharge bin 9 is tiltedly arranged at the bottom of the openings of the first screening frame 4 and the second screening frame 5 .

[0031] The discharging inclined plate 11 is arranged inside the bottom end of the box body 1 , and the discharging lower end of the discharging inclined plate 11 is arranged in the second discharging port 12 , and a second discharging bin 13 is arranged outside the second discharging port 12 .

[0032] Embodiment 2:

[0033] Based on Example 1, the cleaning mechanism 17 mentioned in Example 1 is described. In this embodiment, the cleaning mechanism 17 includes a first bevel gear 171, a second bevel gear 172, a screw 173, a second movable slider 174, a slide bar 175 and a scraper 176. The first bevel gear 171 is connected and fixed to the multi-stage screening component, and the first bevel gear 171 is meshed and connected with the second bevel gear 172 arranged at one end of the screw 173. One end of the second movable slider 174 is threadedly connected to the screw 173, and the other end of the second movable slider 174 is slidably connected to the slide bar 175 arranged at the bottom of the screw 173. Both ends of the screw 173 are rotatably connected to the inside of the third support seat 18 fixed on one side of the box body 1. Both ends of the second movable slider 174 are provided with scrapers 176, and the scraper 176 is arranged at the bottom of the multi-stage screening component. A through groove 19 is opened on one side of the box body 1, and the through groove 19 is slidably connected to one end of the scraper 176.

[0034] In this embodiment, a cleaning mechanism 17 is provided at the bottom of the first screening frame 4 and the second screening frame 5 to clean the screening aperture of the screening frame, effectively preventing millet from getting stuck in the aperture, causing clogging of the aperture and affecting the screening effect, and the cleaning mechanism 17 is connected between the multi-stage screening components to achieve a linkage effect, so that the screening frame is cleaned synchronously during the screening of millet to prevent clogging, and since the first bevel gear 171 is fixed to the other end of the first support rod 305, the first bevel gear 171 is driven to rotate while the first support rod 305 rotates. The second bevel gear 172 can drive the screw rod 173 to rotate on the third support seat 18. Since the screw rod 173 is threadedly connected to one end of the second movable slider 174, and the other end of the second movable slider 174 is slidably connected to the slide rod, the second movable slider 174 can move back and forth along the screw rod 173, driving the scraper 176 at the bottom of the screening frame to slide back and forth on the bottom surface of the screening frame. The scraper 176 contacts the bottom of the screening frame, and can push or scrape the millet out of the aperture, so as to quickly remove the millet blocked in the screening aperture, thereby improving the screening efficiency.

[0035] Working principle: first, drive the servo motor 301, and the millet to be screened enters the first screening frame 4 and the second screening frame 5 that slide back and forth through the feed bin 2. The screening aperture of the second screening frame 5 is smaller than the screening aperture of the first screening frame 4. The millet is rolled in the first screening frame 4 and the second screening frame 5 to achieve a multi-stage screening effect. The screened millet automatically falls onto the discharging inclined plate 11 and is discharged through the second discharging bin 13. The screened impurities or millet will be discharged through the openings at the other ends of the first screening frame 4 and the second screening frame 5, and discharged through the first discharging bin 9.

[0036] During the process of the first screening frame 4 and the second screening frame 5 moving back and forth for screening, the second movable slider 174 drives the scrapers 176 at both ends to move back and forth along the screw 173 at the bottom of the screening frame. Through the contact between the scraper 176 and the screening frame, the millet blocked in the screening aperture on the screening frame can be ejected or scraped off, effectively avoiding the influence of the screening effect due to the blockage of the screening aperture, thereby improving the screening efficiency.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for millet processing, comprising a box (1) and a feed bin (2), Features: The feed bin (2) is arranged at the top center of the box body (1); a multi-stage screening component and a discharge inclined plate (11) are arranged inside the box body (1); the multi-stage screening component is connected to a cleaning mechanism (17) for preventing the screening frame from being blocked; the cleaning mechanism (17) comprises a first bevel gear (171), a second bevel gear (172), a screw (173), a second movable slider (174), a slide bar (175) and a scraper (176); the first bevel gear (171) is connected and fixed to the multi-stage screening component, and the first bevel gear (171) is connected to a second bevel gear (172) and a second movable slider (174) and a slide bar (175) and a scraper (176). The second bevel gear (172) at one end of the screw rod (173) is meshedly connected, one end of the second movable slider (174) is threadedly connected to the screw rod (173), and the other end of the second movable slider (174) is slidably connected to a slide rod (175) arranged at the bottom of the screw rod (173), and both ends of the screw rod (173) are rotatably connected to the inside of a third support seat (18) fixed to one side of the box body (1), and both ends of the second movable slider (174) are provided with scrapers (176), and the scrapers (176) are arranged at the bottom of the multi-stage screening component.

2. A multi-stage screening device for millet processing according to claim 1, Features: A through slot (19) is provided on one side of the box body (1), and the through slot (19) is slidably connected to one end of the scraper (176).

3. A multi-stage screening device for millet processing according to claim 1, Features: The multi-stage screening component comprises a driving mechanism (3), a first screening frame (4) and a second screening frame (5); the driving mechanism (3) comprises a servo motor (301), a first gear (302), a second gear (303), a first pulley (304), a first support rod (305), a transmission belt (306), a second pulley (307), a second support rod (308), an L-shaped rod (309), a connecting rod (310) and a rotating seat (311); the servo motor (301) is fixedly mounted on one side of the top end of the box body (1); and the output shaft of the servo motor (301) is fixedly connected to the first gear (302); the first gear (302) is meshedly connected to the second gear (303) arranged at one end of the first support rod (305); A first pulley (304) is provided on one side of the second gear (303), and the first pulley (304) is connected to a second pulley (307) provided at one end of the second support rod (308) through a transmission belt (306); one end of the second support rod (308) and the first support rod (305) are fixedly connected to one end of an L-shaped rod (309); the other end of the L-shaped rod (309) passes through the interior of the elongated slot (16) and is rotatably connected to one end of a connecting rod (310); the other end of the connecting rod (310) is rotatably connected to a rotating seat (311) provided at the center of one end of the first screening frame (4) and the second screening frame (5); and both sides of the first screening frame (4) and the second screening frame (5) are slidably connected to the inner side of the box body (1).

4. A multi-stage screening device for millet processing according to claim 3, Features: A first movable slider (6) is arranged on both sides of the first screening frame (4) and the second screening frame (5), and the first movable slider (6) is slidably connected to a slide groove (8) on the inner side of a slide rail (7). The slide rail (7) is symmetrically arranged on the inner walls of both sides of the box body (1). A scraper (176) is arranged at the bottom of the first screening frame (4) and the second screening frame (5), and the top surface of the scraper (176) is slidably connected to the bottom surface of the first screening frame (4) and the second screening frame (5).

5. A multi-stage screening device for millet processing according to claim 3, Features: The two ends of the first support rod (305) and the second support rod (308) are respectively rotatably connected to the inside of a first support seat (14) and a second support seat (15) arranged on one side of the outside of the box body (1), and the other end of the first support rod (305) is fixedly mounted with a first bevel gear (171).

6. A multi-stage screening device for millet processing according to claim 3, Features: A first discharge port (10) is provided on the other side of the box body (1), a first discharge bin (9) is provided inside the first discharge port (10), and the first discharge bin (9) is obliquely arranged at the bottom of the openings of the first screening frame (4) and the second screening frame (5).

7. A multi-stage screening device for millet processing according to claim 1, Features: The discharge inclined plate (11) is arranged inside the bottom end of the box body (1), and the discharge lower end of the discharge inclined plate (11) is arranged in the second discharge port (12), and a second discharge bin (13) is arranged outside the second discharge port (12).

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