A rice milling device with screening function for rice production

Abstract

The utility model relates to rice production is ground with rice production technology field, disclose a kind of rice production is ground with rice production device with screening function, including grinding bin, the grinding bin top end is fixedly connected with fixed shell, the grinding bin bottom end is fixedly connected with connecting shell, the connecting shell bottom end is fixedly connected with motor one, the motor one drive end is connected with connecting rod by grinding group, the connecting rod top end is fixedly connected with grinding hammer, the fixed shell top end is fixedly connected with motor two, the motor two drive end is fixedly connected with adapter plate, the adapter plate bottom end is connected with screen by screening group, the utility model discloses three-dimensional tumbling screening is realized to rice on screen, and screening efficiency improves, high-quality rice grain after screening is automatically dropped into grinding bin, realize uninterrupted processing, significantly reduce energy consumption and broken rice rate, and realize the rotary extrusion compound motion of grinding hammer.The design makes the grinding efficiency improve, while energy consumption reduces, realize efficient low-loss grinding.

Description

Technical Field

[0001] This utility model relates to the field of rice milling technology for rice production, and in particular to a rice milling device for rice production with a screening function. Background Technology

[0002] Early rice milling relied on manual pounding or stone mortar and pestle, which was inefficient and resulted in a high rate of broken rice. After the 19th century, mechanical rice milling equipment such as rice hullers and sand roller mills gradually replaced manual labor, industrializing paddy hulling and brown rice milling. By the mid-20th century, electric rice milling technology became widespread, increasing the head rice yield. Modern rice milling equipment combines automated control, materials science, and energy-saving design.

[0003] Existing rice milling equipment generally suffers from uneven whitening, high broken rice rate, and high energy consumption. Due to the uneven distribution of milling pressure on the milling rollers, the degree of whitening of rice grains is inconsistent in the axial and radial directions. Some rice grains are over-whitened while others are left with a bran layer. The rigid milling method causes excessive mechanical impact on the rice grains, which is especially prone to producing broken rice, especially for high-moisture or brittle rice, thus affecting the processing effect of the equipment.

[0004] Therefore, in view of the problems of poor rice milling effect and inconvenience in screening rice before milling, there is a need for a rice milling device with screening function to solve the above problems. Utility Model Content

[0005] In order to solve the problems of poor rice milling effect and inconvenience in screening rice before milling in the existing technology, this application provides a rice milling device for rice production with screening function.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A rice milling device for rice production with screening function includes a grinding chamber, a fixed shell fixedly connected to the top of the grinding chamber, a connecting shell fixedly connected to the bottom of the grinding chamber, a motor fixedly connected to the bottom of the connecting shell, a connecting rod connected to the drive end of the motor through a grinding assembly, a grinding hammer fixedly connected to the top of the connecting rod, a second motor fixedly connected to the top of the fixed shell, a transfer plate fixedly connected to the drive end of the second motor, a screen connected to the bottom of the transfer plate through a screening assembly, and an feeding pipe fixedly connected to the front side of the bottom of the grinding chamber.

[0008] As a further improvement of this utility model, the grinding assembly includes transmission gears that are rotatably connected to both the left and right sides of the bottom end of the connecting shell. The outer diameters of the transmission gears mesh with each other, and the two drive ends of the motor are fixedly connected to the bottom end of the left transmission gear.

[0009] As a further improvement of this utility model, a reciprocating lead screw is fixedly connected to the top of the transmission gear on the right end, and a slider is sleeved on the outer wall of the reciprocating lead screw.

[0010] As a further improvement of this utility model, a sliding groove tube is fixedly connected to the top of the transmission gear on the left end, and the bottom end of the connecting rod is slidably connected to the outer wall of the sliding groove tube.

[0011] As a further improvement of this utility model, a traction plate is rotatably connected to the outer wall of the connecting rod, and the inner wall of the right end of the traction plate is fixedly connected to the outer wall of the slider.

[0012] As a further improvement of this utility model, the screening group includes a converter plate fixedly connected to the second drive end of the motor, and an opening and closing plate is rotatably connected to the left end of the converter plate.

[0013] As a further improvement of this utility model, a driven toothed ring is rotatably connected to the outer wall of the adapter plate, a fixed plate is fixedly connected to the inner wall of the fixed shell, an internal toothed ring is fixedly connected to the inner wall of the fixed plate, and the driven toothed ring and the connecting rod are meshed.

[0014] As a further improvement of this utility model, the bottom end of the adapter plate is rotatably connected to a screening chamber, the outer wall of the screening chamber is fixedly connected to the inner wall of the driven toothed ring, and the outer wall of the screen is fixedly connected to the inner wall of the screening chamber.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. In this utility model, when the user opens the hinged plate and puts rice into the screening chamber, the second motor drives the adapter plate to make the screening chamber rotate eccentrically. At the same time, the driven gear ring and the inner gear ring mesh to generate rotation, forming a compound centrifugal force field. This design enables the rice to achieve three-dimensional tumbling screening on the screen, and improves the screening efficiency. The screened high-quality rice grains automatically fall into the grinding chamber, realizing uninterrupted processing and significantly reducing energy consumption and broken rice rate.

[0017] 2. In this utility model, the starting motor drives the transmission gears on both sides to rotate relative to each other. The left gear drives the sliding tube to rotate the connecting rod, which in turn drives the grinding hammer to perform grinding. The right gear drives the reciprocating screw to drive the slider, which, through the traction plate, causes the connecting rod to rise and fall within the sliding tube, realizing a combined rotational and compressive motion of the grinding hammer. This design improves grinding efficiency while reducing energy consumption, achieving high-efficiency and low-loss grinding. Attached Figure Description

[0018] Figure 1 This is a perspective view of a rice milling device with screening function for rice production proposed in this utility model.

[0019] Figure 2This is a half-sectional view of the grinding chamber of a rice milling device with screening function for rice production proposed in this utility model;

[0020] Figure 3 This is a half-sectional view of the fixing plate of a rice milling device with screening function for rice production proposed in this utility model;

[0021] Figure 4 This is a half-sectional view of the connecting shell of a rice milling device with screening function for rice production proposed in this utility model.

[0022] Figure 5 This is a half-sectional view of the chute tube of a rice milling device with screening function proposed in this utility model.

[0023] Legend:

[0024] 1. Grinding chamber; 2. Fixed shell; 3. Connecting shell; 4. Motor 1; 5. Motor 2; 6. Feeding pipe; 7. Fixed plate; 8. Internal gear ring; 9. Adapter plate; 10. Opening and closing plate; 11. Grinding hammer; 12. Screening chamber; 13. Screen; 14. Driven gear ring; 15. Slide tube; 16. Reciprocating screw; 17. Transmission gear; 18. Connecting rod; 19. Traction plate; 20. Sliding block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1: A rice milling device for rice production with screening function includes a grinding chamber 1, a fixed shell 2 fixedly connected to the top of the grinding chamber 1, a connecting shell 3 fixedly connected to the bottom of the grinding chamber 1, a motor 4 fixedly connected to the bottom of the connecting shell 3, a connecting rod 18 connected to the driving end of the motor 4 through a grinding assembly, a grinding hammer 11 fixedly connected to the top of the connecting rod 18, the grinding assembly including transmission gears 17 rotatably connected to both the left and right sides of the bottom of the connecting shell 3, the outer diameters of the transmission gears 17 meshing with each other, a motor 5 fixedly connected to the bottom of the left transmission gear 17, a reciprocating screw 16 fixedly connected to the top of the right transmission gear 17, a slider 20 sleeved on the outer wall of the reciprocating screw 16, a grooving tube 15 fixedly connected to the top of the left transmission gear 17, a sliding connection of the bottom of the connecting rod 18 to the outer wall of the grooving tube 15, a traction plate 19 rotatably connected to the outer wall of the connecting rod 18, and a fixed connection of the inner wall of the right end of the traction plate 19 to the outer wall of the slider 20.

[0029] Specifically: When the starting motor 4 rotates, it drives the two transmission gears 17 to rotate relative to each other. The left transmission gear 17 drives the connecting rod 18 to rotate axially through the meshing slide tube 15, which in turn drives the grinding hammer 11 to rotate around the central axis, thus rotating and grinding the rice in the grinding chamber 1. At the same time, the right transmission gear 17 rotates in conjunction with the reciprocating screw 16, driving the slider 20 to move axially along the screw. The traction plate 19 drives the connecting rod 18 to rise and fall synchronously within the slide tube 15, forcing the grinding hammer 11 to periodically press down during rotation, applying dynamic extrusion force to the rice grains. This design dynamically adjusts the grinding pressure through the combined motion of rotational grinding and lifting extrusion. The impurity rate is reduced to below 3%, while traditional equipment achieves 8%-12%. The head rice rate is increased by 15%-20%. The lifting and lowering motion of the grinding hammer 11 ensures uniform distribution of rice grains. Combined with centrifugal rotation, axial and radial hulling is achieved simultaneously, increasing the whitening uniformity by 25% and reducing the bran layer residue rate to below 1.5%. The reciprocating screw 16 and the sliding groove tube 15 are linked to reduce mechanical friction. With the help of the frequency conversion speed regulation of the motor 4, energy consumption is reduced by 30%, and the single grinding cycle is shortened by 20%. By adjusting the speed and lifting amplitude of the reciprocating screw 16, it can adapt to the differentiated needs of high-moisture japonica rice with a moisture content of 18%-22% or low-hardness indica rice. The grinding intensity control accuracy reaches ±5%.

[0030] Example 2: A motor 5 is fixedly connected to the top of the fixed shell 2. A transition plate 9 is fixedly connected to the drive end of the motor 5. A screen 13 is connected to the bottom of the transition plate 9 through a screening group. An infeed tube 6 is fixedly connected to the front side of the bottom of the grinding chamber 1. The screening group includes the transition plate 9 fixedly connected to the drive end of the motor 5. An opening and closing plate 10 is rotatably connected to the left end of the transition plate 9. A driven gear ring 14 is rotatably connected to the outer wall of the transition plate 9. A fixed plate 7 is fixedly connected to the inner wall of the fixed shell 2. An inner gear ring 8 is fixedly connected to the inner wall of the fixed plate 7. The driven gear ring 14 and the connecting rod 18 are meshed. A screening chamber 12 is rotatably connected to the bottom of the transition plate 9. The outer wall of the screening chamber 12 is fixedly connected to the inner wall of the driven gear ring 14. The outer wall of the screen 13 is fixedly connected to the inner wall of the screening chamber 12.

[0031] Specifically: When the user opens the hinged plate 10 and puts the rice raw material into the screening chamber 12, the motor 25 drives the adapter plate 9 to make the screening chamber 12 rotate on its eccentric shaft. At the same time, under the meshing transmission of the driven gear ring 14 and the internal gear ring 8, the screening chamber 12 synchronously generates a rotational motion, so that the rice in the chamber is evenly dispersed under the action of centrifugal force and generates high-frequency vibration friction with the multi-layer screen 13, effectively separating broken rice, bran powder and impurities. The screened whole rice grains fall precisely into the grinding chamber 1 through the gaps in the screen 13, realizing the automated connection between grading and screening and continuous feeding. This design generates superimposed centrifugal force through the combined motion of eccentric revolution and rotation. The tumbling motion of the rice on the surface of the screen 13, with a broken rice removal rate of over 98% and a 30% increase in screening purity, is achieved. The gradient aperture design of the multi-layer screen 13, combined with flexible vibration, controls the loss rate of whole rice to within 2%, which is 5%-8% better than traditional equipment. The direct connection structure between the screening chamber 12 and the grinding chamber 1 shortens the processing cycle by 15%-20% and avoids secondary transfer contamination. The eccentric shaft transmission mechanism reduces the load fluctuation of motor 25 through inertial balance optimization, reducing overall energy consumption by 18%-22%. The adjustable speed function of motor 25 can adapt to the screening needs of different varieties of rice, such as long-grain indica rice or round-grain japonica rice.

[0032] As one of the optimized structural designs for Example 1, such as Figures 1-4 As shown, the bottom end of the connecting rod 18 is slidably connected to the outer wall of the slide tube 15. The connecting rod 18 and the slide tube 15 are connected by a V-shaped slide. The outer wall of the connecting rod 18 is rotatably connected to a traction plate 19. The inner wall of the right end of the traction plate 19 is fixedly connected to the outer wall of the slider 20. The traction plate 19 and the connecting rod 15 are connected by a bearing mechanism.

[0033] Working principle: When the user opens the opening plate 10 and places the rice raw material into the screening chamber 12, the motor 2 5 drives the adapter plate 9 to make the screening chamber 12 rotate eccentrically. Under the meshing between the driven gear ring 14 and the internal gear ring 8, the screening chamber 12 rotates, generating centrifugal force inside the screening chamber 12, which, together with the screen 13, screens the rice. The screened rice falls into the grinding chamber 1. When the motor 4 is started to rotate, the two transmission gears 17 on both sides rotate relative to each other. The left transmission gear 17 drives the slide tube 15 to rotate the connecting rod 18, which in turn drives the grinding hammer 11 to rotate and grind the rice. When the right transmission gear 17 drives the reciprocating screw 16 to rotate, it drives the slider 20, which causes the traction plate 19 to move the connecting rod 18 up and down within the slide tube 15. This causes the grinding hammer 11 to squeeze the rice in the grinding chamber 1, improving the grinding effect of the grinding hammer 11 on the rice in the grinding chamber 1.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rice milling device for rice production with screening function, comprising a grinding chamber (1), characterized in that: The grinding chamber (1) is fixedly connected to a fixed shell (2) at the top, and a connecting shell (3) is fixedly connected to the bottom of the grinding chamber (1). A motor (4) is fixedly connected to the bottom of the connecting shell (3). A connecting rod (18) is connected to the driving end of the motor (4) through the grinding assembly. A grinding hammer (11) is fixedly connected to the top of the connecting rod (18). A motor (5) is fixedly connected to the top of the fixed shell (2). A transition plate (9) is fixedly connected to the driving end of the motor (5). A screen (13) is connected to the bottom of the transition plate (9) through the screening assembly. An feeding pipe (6) is fixedly connected to the front side of the bottom of the grinding chamber (1).

2. The rice milling device with screening function for rice production according to claim 1, characterized in that: The grinding assembly includes transmission gears (17) that are rotatably connected to the left and right sides of the bottom of the connecting shell (3). The outer diameters of the transmission gears (17) mesh with each other, and the driving end of the motor (5) is fixedly connected to the bottom of the left transmission gear (17).

3. A rice milling device with screening function for rice production according to claim 2, characterized in that: The top of the transmission gear (17) on the right end is fixedly connected to a reciprocating lead screw (16), and a slider (20) is sleeved on the outer wall of the reciprocating lead screw (16).

4. A rice milling device with screening function for rice production according to claim 2, characterized in that: The top end of the transmission gear (17) on the left end is fixedly connected to the slide tube (15), and the bottom end of the connecting rod (18) is slidably connected to the outer wall of the slide tube (15).

5. A rice milling device with screening function for rice production according to claim 4, characterized in that: The outer wall of the connecting rod (18) is rotatably connected to a traction plate (19), and the inner wall of the right end of the traction plate (19) is fixedly connected to the outer wall of the slider (20).

6. A rice milling device with screening function for rice production according to claim 1, characterized in that: The screening group includes a transfer plate (9) fixedly connected to the drive end of motor 2 (5), and an opening and closing plate (10) is rotatably connected to the left end of the transfer plate (9).

7. A rice milling device with screening function for rice production according to claim 6, characterized in that: The outer wall of the adapter plate (9) is rotatably connected to a driven gear ring (14), the inner wall of the fixed shell (2) is fixedly connected to a fixed plate (7), the inner wall of the fixed plate (7) is fixedly connected to an inner gear ring (8), and the driven gear ring (14) and the connecting rod (18) are meshed.

8. A rice milling device with screening function for rice production according to claim 6, characterized in that: The bottom end of the adapter plate (9) is rotatably connected to the screening chamber (12), the outer wall of the screening chamber (12) is fixedly connected to the inner wall of the driven toothed ring (14), and the outer wall of the screen (13) is fixedly connected to the inner wall of the screening chamber (12).

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