Rice husk separation type rice huller facilitating rice straw discharging
By introducing a guide plate and discharge pipe structure into the rice huller, the problem of rice straw accumulation is solved, ensuring stable discharge of rice straw and normal operation of the equipment, and preventing rice straw blockage and brown rice leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LIANGGONG MASCH TECH CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-08
AI Technical Summary
In existing rice hullers, rice straw tends to accumulate at the end of the bidirectional spiral conveyor rod, causing material blockage and affecting equipment operating efficiency.
The design incorporates a downward-sloping first guide plate and a gap between the second guide plate. Combined with the discharge pipe and extension plate structure, rice straw enters the discharge pipe through the straw drop hole and is discharged. Locking bolts and sealing flaps are used to adjust the guidance and sealing, preventing rice straw from accumulating.
Effectively cleans rice straw, preventing it from accumulating at the end of the bidirectional spiral conveyor, ensuring normal equipment operation, and preventing brown rice leakage when there is little rice straw, thus achieving stable discharge of rice straw.
Smart Images
Figure CN224208066U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rice hulling machine technology, and specifically relates to a rice hulling machine that facilitates the discharge of rice straw by separating the rice husks. Background Technology
[0002] A rice huller is a grain processing machine that removes the husk from paddy rice to produce brown rice. It removes the outer husk of the paddy rice, reducing grain breakage and surface damage, and preserving the brown rice as intact as possible.
[0003] Currently, Chinese patent CN115532343, published on December 30, 2022, discloses a rice huller that facilitates efficient separation of rice husks. The huller includes a machine body, a feed hopper, a rubber roller, and a discharge port. It also includes a rice husk separation box located below the machine body and connected to the discharge port. A first guide mixing plate is installed on the upper side of the rice husk separation box to allow brown rice and rice husks to fall from the discharge port. A receiving plate is installed below the first guide mixing plate and extends horizontally within the rice husk separation box. A bidirectional spiral conveyor rod is rotatably connected within the receiving plate. The receiving plate has discharge holes in the middle and at both ends. A fan is also installed within the rice husk separation box. A second collection trough for collecting rice husks is located within the rice husk separation box on the side away from the first collection trough. A second spiral conveyor rod is rotatably connected within the rice husk separation box and within the second collection trough. A rice husk discharge port is located on the side wall of the rice husk separation box at the end of the second spiral conveyor rod.
[0004] The rice grains enter the machine body through the feed hopper, pass through the rubber rollers to remove the outer husk, and then fall into the receiving plate. After being dispersed by the bidirectional spiral conveyor rod of the receiving plate, they fall downwards through the discharge hole into the rice husk separation box. However, rice straw is easily mixed in with the rice raw material. In the existing technology, when the rice straw falls into the receiving plate and is conveyed to both ends by the bidirectional spiral conveyor rod, the rice straw cannot fall down along the discharge hole. Therefore, a large amount of rice straw will accumulate at the end of the bidirectional spiral conveyor rod, resulting in a blockage at the end of the bidirectional spiral conveyor rod. Utility Model Content
[0005] The purpose of this invention is to provide a rice huller that facilitates the discharge of rice straw by separating the rice husks, allowing the rice straw to be conveniently discharged from the end of the bidirectional spiral conveyor.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a rice huller with husk separation that facilitates the discharge of rice straw, comprising a rice huller body, a feeding hopper located at the upper end of the body, a rice husk separation box located at the lower end of the body, a receiving plate located at the upper end of the rice husk separation box, and a bidirectional spiral conveying rod rotatably connected to the receiving plate. A first guide plate inclined downward is provided in the rice husk separation box and below the receiving plate. A vertical plate is provided on the side wall of the rice husk separation box at the position of the receiving plate. A second guide plate inclined downward is provided below the vertical plate. A gap is left between the first guide plate and the second guide plate for the brown rice to fall. Both ends of the receiving plate are provided with dropping holes for the rice straw to fall. Both ends of the second guide plate are provided with discharge pipes corresponding to the dropping holes for the rice straw to be discharged to the outside of the rice husk separation box. An extension plate extending toward the first guide plate is provided in the discharge pipe.
[0007] A further feature of this invention is that: a side plate is provided on the side of the extension plate, which abuts against the inner wall of the discharge pipe; an elongated hole is provided on the side plate; a threaded hole corresponding to the position of the elongated hole is provided on the side wall of the discharge pipe; and a locking bolt is provided on the side plate, which passes through the elongated hole and is threaded into the threaded hole and is used to lock the position of the side plate.
[0008] A further feature of this invention is that a sealing flap, hinged to the upper side of the discharge pipe, is provided at the end of the discharge pipe away from the second guide plate.
[0009] A further feature of this invention is that push rods for abutting against the side wall of the sealing flap are provided at both sides of the end of the extension plate and below the sealing flap.
[0010] A further feature of this invention is that a baffle plate is provided inside the discharge pipe to prevent rice straw from being embedded inside the sealing flap.
[0011] A further feature of this invention is that multiple observation windows are provided on the vertical plate at the position of the screw conveyor.
[0012] In summary, this utility model has the following beneficial effects:
[0013] 1. Brown rice falling from the receiving plate is guided by the first and second guide plates and slides along the gap into the lower part of the rice husk separation box. The bidirectional spiral conveyor rod transports the rice straw towards the end of the receiving plate. Then the rice straw falls along the drop hole. At this time, the discharge pipes at both ends of the second guide plate, corresponding to the drop hole positions, allow the rice straw to slide down the extension plate, cross the gap, and fall into the discharge pipe. The rice straw is then discharged out of the rice husk separation box through the discharge pipe, thus cleaning the rice straw and preventing a large amount of rice straw from accumulating at the end of the bidirectional spiral conveyor rod.
[0014] 2. When the rice raw material is relatively clean and does not contain rice straw, move the extension plate away from the first guide plate, and then use the locking bolts to position the side plate after movement. This will prevent a small amount of brown rice from leaking out of the discharge pipe after falling along the extension plate. At the same time, when the rice raw material contains a lot of rice straw, move the extension plate closer to the first guide plate and make its end abut against the first guide plate. Then use the locking bolts to position the side plate after movement. At this time, the extension plate can guide the rice straw, making it easy for the rice straw to slide stably into the discharge pipe.
[0015] 3. A sealing flap is installed at the end of the discharge pipe away from the second guide plate, with its upper side hinged inside the discharge pipe. When it is not necessary to discharge rice straw through the discharge pipe, the sealing flap can flip downward under its own weight and abut against the extension plate, thereby sealing the discharge pipe through the sealing flap.
[0016] 4. When the extension plate moves toward the side closer to the first guide plate and its end abuts against the first guide plate, the extension plate can use the push rod to drive the sealing flap to flip upward, thereby preventing the sealing flap from affecting the falling of the rice straw;
[0017] 5. By using the baffle plate installed inside the discharge pipe, the rice straw can be prevented from getting embedded in the inside of the sealing flap during the process of falling inside the discharge pipe;
[0018] 6. Multiple observation windows are installed on the vertical plate at the position of the bidirectional screw conveyor, which allows external operators to easily observe the conveying status of the bidirectional screw conveyor. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a structural cross-sectional view of the rice husk separation box in this utility model;
[0022] Figure 3 This is a schematic diagram showing the connection relationship between the receiving plate, the bidirectional spiral conveyor rod, the first guide plate, the second guide plate, and the discharge pipe in this utility model;
[0023] Figure 4This is a schematic diagram of the structure of the rice husk separator located at the discharge pipe position in this utility model;
[0024] Figure 5 This is a schematic diagram of the material receiving plate in this utility model;
[0025] Figure 6 This is a schematic diagram of the material discharge pipe in this utility model;
[0026] Figure 7 This is a cross-sectional view of the discharge pipe in this utility model. At this time, the extension plate moves toward the side away from the first guide plate, and the sealing flap flips downward under its own gravity and then abuts against the upper surface of the extension plate.
[0027] Figure 8 This is a cross-sectional view of the discharge pipe in this utility model. At this time, the extension plate moves toward the side closer to the first guide plate and its end abuts against the first guide plate. The extension plate uses a push rod to drive the sealing flap to flip upward.
[0028] In the diagram, 1 is the machine body; 11 is the feed hopper; 2 is the rice husk separator; 21 is the receiving plate; 211 is the drop bar hole; 22 is the bidirectional spiral conveyor rod; 23 is the first guide plate; 24 is the vertical plate; 241 is the observation window; 25 is the second guide plate; 3 is the discharge pipe; 31 is the threaded hole; 32 is the sealing flap; 33 is the baffle plate; 4 is the extension plate; 41 is the side plate; 411 is the elongated hole; 42 is the locking bolt; and 43 is the push rod. Detailed Implementation
[0029] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0030] A rice huller that facilitates the discharge of rice straw and separates rice husks, as described above. Figure 1 , Figure 2 , Figure 3This rice huller with chaff separation that facilitates rice straw discharge includes a machine body 1, a feed hopper 11, a chaff separation box 2, a receiving plate 21, and a bidirectional spiral conveyor 22. The feed hopper 11 is located at the upper end of the machine body 1, while the chaff separation box 2 is located at the lower end of the machine body 1. Since the internal structures of the feed hopper 11 and the chaff separation box 2 are existing technologies, their internal structures will not be described in detail here. The receiving plate 21 is fixed to the upper end of the chaff separation box 2 by bolts, and the receiving plate 21 has multiple holes for brown rice to fall through. The bidirectional spiral conveyor 22 is rotatably connected to the receiving plate 21, and the end of the bidirectional spiral conveyor 22 is connected to the side wall of the chaff separation box 2 through a bearing seat and is driven by a motor.
[0031] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 Inside the rice husk separator 2, below the receiving plate 21, a first guide plate 23 inclined downwards is fixed with bolts. On the side wall of the rice husk separator 2, at the position of the receiving plate 21, a vertical plate 24 is fixed with bolts. Multiple observation windows 241 are installed on the vertical plate 24 at the position of the bidirectional spiral conveyor rod 22. At the same time, a second guide plate 25 inclined downwards is fixed with bolts below the vertical plate 24. A gap is left between the first guide plate 23 and the second guide plate 25 for the brown rice to fall. Both ends of the receiving plate 21 are provided with drop holes 211 for the rice straw to fall. Both ends of the second guide plate 25 are fixed with bolts and discharge pipes 3. The two discharge pipes 3 are respectively located at the positions of the two drop holes 211, and the discharge pipes 3 can discharge the rice straw to the outside of the rice husk separator 2.
[0032] Reference Figure 3 , Figure 6 , Figure 7 , Figure 8 An extension plate 4 extending toward the first guide plate 23 is provided inside the discharge pipe 3. A side plate 41 is integrally provided on the side of the extension plate 4, which abuts against the inner wall of the discharge pipe 3. An elongated hole 411 is provided on the side plate 41. A threaded hole 31 corresponding to the position of the elongated hole 411 is provided on the side plate 41. A locking bolt 42 is provided on the side plate 41, which passes through the elongated hole 411 and is threaded into the threaded hole 31 to lock the position of the side plate 41. A sealing flap 32 is also provided at the end of the discharge pipe 3 away from the second guide plate 25. A push rod 43 for abutting against the side wall of the sealing flap 32 is welded on both sides of the end of the extension plate 4 and below the sealing flap 32. A baffle plate 33 for preventing rice straw from being embedded in the inner side of the sealing flap 32 is also integrally provided inside the discharge pipe 3.
[0033] Principle: Brown rice falling from the receiving plate 21 is guided by the first guide plate 23 and the second guide plate 25 and slides along the gap into the lower side of the rice husk separation box 2. When the rice raw material itself contains a lot of rice straw, after loosening the locking bolt 42, the extension plate 4 can be moved towards the side closer to the first guide plate 23 and the end of the extension plate 4 can be abutted against the first guide plate 23. Then, the locking bolt 42 is used to lock and position the side plate 41 after it has been moved. At the same time, the extension plate 4 can drive the sealing flap 32 to flip upward by the push rod 43, so that the discharge pipe 3 is opened. At this time, the bidirectional spiral conveyor 22 conveys the rice straw towards the end of the receiving plate 21. Then the rice straw can fall down along the drop hole 211. After the rice straw slides down the extension plate 4, it can cross the gap and fall into the discharge pipe 3. Then the rice straw can be discharged out of the rice husk separation box 2 through the discharge pipe 3. Finally, the rice straw can be cleaned up, and a large amount of rice straw can be avoided from accumulating at the end of the bidirectional spiral conveyor 22.
[0034] When the rice raw material itself is relatively clean and does not contain rice straw, the extension plate 4 is moved away from the first guide plate 23. Then, the position of the side plate 41 after movement is positioned by the locking bolt 42. At this time, a small amount of brown rice can be prevented from leaking out of the discharge pipe 3 after falling along the extension plate 4. At the same time, the sealing flap 32 can flip down under its own weight and abut against the extension plate 4, thereby sealing the discharge pipe 3 through the sealing flap 32.
Claims
1. A rice huller with facilitating rice straw discharge and hull separation, comprising a rice huller body (1), a feed hopper (11) located at the upper end of the body (1), a rice hull separation box (2) located at the lower end of the body (1), a receiving plate (21) located at the upper end of the rice hull separation box (2), and a bidirectional spiral conveying rod (22) rotatably connected to the receiving plate (21), characterized in that: A first guide plate (23) is inclined downward inside the rice husk separator (2) and located below the receiving plate (21). A vertical plate (24) is provided on the side wall of the rice husk separator (2) at the position of the receiving plate (21). A second guide plate (25) is inclined downward below the vertical plate (24). A gap is left between the first guide plate (23) and the second guide plate (25) for brown rice to fall. Both ends of the receiving plate (21) are provided with dropping holes (211) for rice straw to fall. Both ends of the second guide plate (25) are provided with discharge pipes (3) corresponding to the dropping holes (211) for rice straw to be discharged to the outside of the rice husk separator (2). An extension plate (4) extending toward the first guide plate (23) is provided inside the discharge pipe (3).
2. The rice hulling machine with facilitating rice straw discharge as described in claim 1, characterized in that: The extension plate (4) has a side plate (41) that abuts against the inner wall of the discharge pipe (3). The side plate (41) has an elongated hole (411). The side wall of the discharge pipe (3) has a threaded hole (31) corresponding to the position of the elongated hole (411). The side plate (41) has a locking bolt (42) that passes through the elongated hole (411), is threaded into the threaded hole (31), and is used to lock the position of the side plate (41).
3. A rice huller with chaff separation for easy rice straw discharge as described in claim 2, characterized in that: A sealing flap (32) is provided at the end of the discharge pipe (3) away from the second guide plate (25), which is hinged to the upper side inside the discharge pipe (3).
4. A rice huller with chaff separation for easy rice straw discharge as described in claim 3, characterized in that: Push rods (43) for abutting against the side wall of the sealing flap (32) are provided at both sides of the end of the extension plate (4) and below the sealing flap (32).
5. A rice huller with chaff separation for easy rice straw discharge as described in claim 4, characterized in that: The discharge pipe (3) is equipped with a baffle plate (33) to prevent rice straw from being embedded inside the sealing flap (32).
6. A rice huller with chaff separation for easy rice straw discharge as described in claim 1, characterized in that: Multiple observation windows (241) are provided on the vertical plate (24) at the position of the bidirectional spiral conveyor rod (22).