Grain hulling device

Abstract

The utility model relates to the technical field of rice hulling devices, in particular to a grain rice hulling device which comprises a rice huller main body, a rice hulling chamber composed of rice hulling roller sets is arranged on the rice huller main body, a feeding hopper is arranged at the top of the rice hulling chamber, a supporting frame is detachably installed in the feeding hopper, and a rice hulling roller is arranged on the supporting frame. A vertically-distributed center shaft penetrates through the middle of the supporting frame, a plurality of guide plates are arranged at the top end of the center shaft in a surrounding mode, and independent adjusting mechanisms are arranged at the connecting positions of the center shaft and the guide plates and used for adjusting the inclination angles of the guide plates. And anti-blocking baffles with adjustable opening and closing degrees are symmetrically arranged at the bottom end of the central shaft. According to the grain hulling device, the structure of the feeding hopper is optimized, grain blockage is effectively prevented, the grain breakage rate is reduced, and therefore the processing efficiency and the product quality are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rice hulling devices, specifically a grain hulling device. Background Technology

[0002] With the development of modern agriculture, grain processing technology has also been significantly improved. Rice hulling, as a crucial step in grain processing, primarily aims to remove the outer husk of grains to facilitate subsequent processing and utilization. Traditional rice hulling methods relied heavily on manual operation or simple machinery, resulting in low efficiency and high labor intensity. With technological advancements, various types of rice hulling machines have emerged, which not only improve work efficiency but also reduce production costs, bringing great convenience to agricultural production.

[0003] While existing rice hullers on the market can meet basic rice hulling needs, when processing certain types of grains, such as long-grain rice, the improper design of the feed hopper can easily cause blockages before the grains enter the hulling chamber. This affects the equipment's efficiency and the quality of the processed grains. At the same time, an unreasonable feed hopper design can also increase the breakage rate of the grains, thus affecting the quality of the final product. Therefore, optimizing the design of the feed hopper structure of rice hullers is particularly important to address these issues. Utility Model Content

[0004] The purpose of this utility model is to provide a grain hulling device to solve the problems of easy grain clogging and high breakage rate in common grain hullers on the market as mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a grain hulling device, comprising a hulling machine body, a hulling chamber composed of hulling rollers on the hulling machine body, and a feeding hopper at the top of the hulling chamber. A support frame is detachably installed inside the feeding hopper, and a vertically distributed central shaft runs through the middle of the support frame. Several guide plates are arranged around the top of the central shaft, and each guide plate is provided with a separate adjustment mechanism at the connection between the central shaft and each guide plate for adjusting the tilt angle of the guide plate. Furthermore, anti-blocking baffles with adjustable opening and closing degrees are symmetrically provided at the bottom of the central shaft.

[0006] Preferably, each adjustment mechanism includes a positioning column, a positioning ring, and an adjustment coupling. The positioning column is horizontally fixed around the top of the central shaft. The positioning ring is sleeved on the outside of the positioning column and fixed by a locking screw. The adjustment coupling is movably connected between the bottom of the positioning ring and the top of the inner end of the guide plate.

[0007] Preferably, the inner side of the top of the anti-blocking baffle is hinged to the outer wall of the central shaft via a pivot pin, and a swing cylinder is also connected between the inner side of the anti-blocking baffle and the outer wall of the central shaft.

[0008] Preferably, both sides of the support frame are inclined, and the bottom of both sides of the support frame are welded and fixed with inserts, and the inner walls of both sides of the feed hopper are provided with inserts that match the structure of the inserts.

[0009] Preferably, three guide plates are arranged around the top of the central axis, and the surface of the guide plates is evenly provided with a number of raised strips.

[0010] Preferably, the surface of the anti-blocking baffle is uniformly provided with a plurality of micropores, and the gaps between the micropores are also uniformly provided with a plurality of toothed racks.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This grain hulling device effectively prevents grain blockage and reduces grain breakage rate by optimizing the structure of the feeding hopper, thereby improving processing efficiency and product quality. The device ensures smooth grain flow during feeding through the flexible adjustment of the guide plate inside the feeding hopper and the adjustable opening and closing design of the anti-blocking baffle, avoiding grain accumulation and breakage within the feeding hopper. Simultaneously, the stable support of the support frame and central shaft further enhances the reliability of the device, improving overall processing efficiency and grain processing quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a grain hulling device according to the present invention;

[0013] Figure 2 This is a schematic diagram of the external structure of the support frame of a grain hulling device according to the present invention;

[0014] Figure 3 This is a schematic diagram of the connection structure between the guide plate and the central shaft of a grain hulling device according to the present invention;

[0015] Figure 4 This is a schematic diagram of the outer structure of the anti-blocking baffle of a grain hulling device according to the present invention.

[0016] In the diagram: 1. Main body of the rice huller; 2. Rice hulling roller assembly; 3. Feed hopper; 31. Embedded seat; 4. Support frame; 41. Embedded block; 5. Central shaft; 6. Guide plate; 61. Protruding strip; 7. Adjustment mechanism; 71. Positioning column; 72. Positioning ring; 73. Adjustment coupling; 8. Anti-blocking baffle; 81. Micro-hole; 9. Swing cylinder. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-4This utility model provides a technical solution: a grain hulling device, including a hulling machine body 1, a hulling chamber composed of hulling rollers 2 on the hulling machine body 1, and a feed hopper 3 on the top of the hulling chamber. A support frame 4 is detachably installed inside the feed hopper 3, and a vertically distributed central shaft 5 runs through the middle of the support frame 4. Several guide plates 6 are arranged around the top of the central shaft 5, and each guide plate 6 has an individual adjustment mechanism 7 at its connection point to the central shaft 5 for adjusting the tilt angle of the guide plate 6. A symmetrical anti-blocking baffle 8 with adjustable opening and closing degree is provided at the bottom of the central shaft 5. In use, the grain enters from the feed hopper 3 and is first guided by the guide plates 6. The guide plates 6 can be flexibly adjusted by the adjustment mechanisms 7. The tilt angle is adjusted to ensure that the grains can smoothly slide into the hulling chamber. Simultaneously, the stable support of the support frame 4 and the central shaft 5 ensures the stability of the guide plate 6 during adjustment. The anti-blocking baffle 8, by adjusting its opening and closing degree, further prevents grain blockage during feeding, ensuring the uniformity and continuity of grain flow. This effectively avoids grain accumulation and damage in the feed hopper 3, thereby improving the equipment's working efficiency and grain processing quality. It solves the problem of high grain blockage and damage rates in existing rice hullers due to unreasonable feed hopper design. Each set of the adjustment mechanism 7 includes a positioning column 71, a positioning ring 72, and an adjustment coupling 73. The positioning column 71 is horizontally fixed around the top of the central shaft 5, and the positioning ring 72 is sleeved on the outside of the positioning column 71 and... The adjusting coupling 73 is fixed by the locking screw and is movably connected between the bottom of the positioning ring 72 and the top of the inner end of the guide plate 6. The connections between the adjusting coupling 73, the positioning ring 72, and the guide plate 6 are all hinged. The tilt angle of the guide plate 6 can be flexibly adjusted by adjusting the position of the positioning ring 72. When it is necessary to change the angle of the guide plate 6, loosen the locking screw on the positioning ring 72, adjust the position of the positioning ring 72 laterally outside the positioning post 71, and then retighten the locking screw on the positioning ring 72. The change in the position of the positioning ring 72 will cause the adjusting coupling 73 to move, thereby changing the tilt angle of the guide plate 6. The inner side of the top of the anti-blocking baffle 8 is hinged to the outer wall of the central shaft 5 via a pivot pin, and the inner side of the anti-blocking baffle 8 is also hinged to the central shaft 5. A swing cylinder 9, model SC160-100, is also connected between the outer walls of the feed hopper 3. One end of the swing cylinder 9 is fixed to the outer wall of the central shaft 5 via a fixed bracket, and the other end is connected to the inner side of the anti-blocking baffle 8 via a hinge seat. When grain enters from the feed hopper 3, the swing cylinder 9 is driven by air pressure to rotate the anti-blocking baffle 8 around the pivot pin, adjusting the opening and closing degree of the anti-blocking baffle 8, thereby preventing the grain from blocking during the feeding process and ensuring that the grain can smoothly enter the hulling chamber. This further avoids the accumulation and damage of grain in the feed hopper 3. Both sides of the support frame 4 are inclined, and the bottom of both sides of the support frame 4 are welded and fixed with inserts 41. The inner walls of both sides of the feed hopper 3 are welded and fixed with inserts 31 that match the structure of the inserts 41.The support frame 4 of this structure can be quickly installed and disassembled through the cooperation of the insert 41 and the base 31. When it is necessary to replace or maintain the guide plate 6 or the anti-blocking baffle 8, the support frame 4 can be easily removed from the base 31. During installation, the support frame 4 can be quickly fixed by inserting the insert 41 into the base 31. This simplifies the disassembly and assembly process, improves the convenience of maintenance and replacement, and ensures the stability of the support frame 4 during use. The guide plate 6 has three circumferentially arranged around the top of the central shaft 5, and the surface of the guide plate 6 is evenly provided with several protrusions 61. After the grain enters the feed hopper 3, it can smoothly slide into the hulling chamber along the surface of the guide plate 6. The circumferential distribution of the guide plate 6 and the The quantity setting ensures uniform distribution of grains, reducing the possibility of blockage. The raised strips 61 increase the friction between the grains and the guide plate 6, preventing slippage during descent and further improving grain flowability and processing efficiency. The anti-blocking baffle 8 has a plurality of micro-holes 81 evenly distributed on its surface, with a plurality of toothed strips evenly distributed between the micro-holes 81. This structure allows airflow through the micro-holes 81 as grains pass through the anti-blocking baffle 8, reducing air resistance during descent and ensuring smooth grain flow. Simultaneously, the toothed strips on the surface of the anti-blocking baffle 8 increase the friction between the grains and the baffle 8, preventing slippage and further improving grain throughput efficiency.

[0019] Working principle: When using this grain hulling device, first adjust the tilt angle of the guide plate 6 in advance. During adjustment, first loosen the locking screw on the positioning ring 72, adjust the position of the positioning ring 72 laterally outside the positioning column 71, and then tighten the locking screw on the positioning ring 72. The change in the position of the positioning ring 72 will drive the adjusting coupling 73 to move, thereby changing the tilt angle of the guide plate 6. Next, pour the grain into the feed hopper 3. After the grain enters the feed hopper 3, it will slide down along the surface of the guide plate 6. Under the guidance of the guide plate 6, the grain continues to flow downward and enters the anti-blocking baffle 8 area. At this time, the swing cylinder 9 is driven by air pressure to make the anti-blocking baffle 8 rotate around the pivot pin, adjusting the opening and closing degree of the anti-blocking baffle 8. After the grain passes through the anti-blocking baffle 8, it enters the hulling chamber of the hulling machine body 1. The outer shell is removed by the action of the hulling roller group 2, and finally it is discharged from the discharge port. In the whole process, the support frame 4 can be quickly installed and disassembled through the cooperation of the insert 41 and the insert 31, thereby completing a series of operations.

[0020] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A grain husking device, comprising a husking machine body (1), a husking chamber composed of a husking roller set (2) is arranged on the husking machine body (1), and a feeding hopper (3) is arranged on the top of the husking chamber, characterized in that: The inside of the feeding hopper (3) is detachably installed with a support frame (4), a center shaft (5) is vertically distributed through the middle of the support frame (4), the top end of the center shaft (5) is surrounded with a plurality of guide plates (6), and a separate adjusting mechanism (7) is arranged at the connection between the center shaft (5) and each guide plate (6) for adjusting the inclination angle of the guide plate (6), and the bottom end of the center shaft (5) is symmetrically provided with an anti-blocking baffle (8) with adjustable opening and closing degree.

2. A grain huller according to claim 1, characterised in that: Each group of the adjusting mechanism (7) comprises a positioning column (71), a positioning ring (72) and an adjusting shaft (73), the positioning column (71) is fixed horizontally around the top end of the center shaft (5), the positioning ring (72) is sleeved outside the positioning column (71) and is fixed by locking screw, and the adjusting shaft (73) is movably connected between the bottom of the positioning ring (72) and the top of the inner end of the guide plate (6).

3. A grain huller according to claim 1 wherein: The inner side of the top end of the anti-blocking baffle (8) is hinged with the connection between the outer wall of the center shaft (5) and the hinge pin, and the inner side of the anti-blocking baffle (8) and the outer wall of the center shaft (5) are further connected with a swing cylinder (9).

4. A grain huller according to claim 1 wherein: Both sides of the support frame (4) are inclined, the bottom of both sides of the support frame (4) is welded with an embedded block (41), and both sides of the inner wall of the feeding hopper (3) is provided with an embedded seat (31) matching the structure of the embedded block (41).

5. A grain huller according to claim 1 wherein: Three guide plates (6) are arranged around the top end of the center shaft (5), and a plurality of convex strips (61) are evenly arranged on the surface of the guide plate (6).

6. A grain huller according to claim 1 wherein: A plurality of micro-holes (81) are evenly arranged on the surface of the anti-blocking baffle (8), and a plurality of gear racks are evenly arranged between the micro-holes (81).

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