Rice husking machine with stone removing function
By setting a rotating shaft and rotating plate in the rice milling machine, the stone particles are trapped on the second filter screen by the action of free fall, which solves the problem of stone accumulation on the filter screen and improves filtration efficiency and working efficiency.
Patent Information
- Application Number
- CN202520079974.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-14
AI Technical Summary
In existing rice milling machines, excessive accumulation of stones on the surface of the first filter screen during operation reduces filtration efficiency and overall work efficiency.
A rice milling machine with stone removal function was designed. By setting a rotating shaft and a rotating plate, the second filter screen is driven to slide the rice grains back and forth. The stone particles are trapped on the second filter screen by free fall, thus avoiding the accumulation of stones.
This effectively prevents stones from accumulating on top of the second filter screen, improving filtration efficiency and overall work efficiency.
Smart Images

Figure CN223832368U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice milling machine technology, and in particular to a rice milling machine with a stone removal function. Background Technology
[0002] Even though rice grains are washed before being hulled in a rice milling machine, they may still contain stones. If rice grains containing stones are directly fed into the rice milling machine, it will affect the quality of the rice after milling.
[0003] Announcement No.: CN 221889950 U discloses a rice milling machine with stone removal function. This solution uses a cylinder, rice milling roller, vibrating motor, servo motor, first filter screen, reel, and return spring to make the transmission rod drive the first filter screen to tilt, thereby tilting and dumping the rice husks accumulated on the first filter screen, avoiding the trouble of manual disassembly and cleaning each time. However, during the use of this device, when too many stones are accumulated on the surface of the first filter screen, the filtration efficiency of the device will be reduced, thus reducing the overall working efficiency of the device.
[0004] Therefore, it is necessary to provide a rice milling machine with stone removal function to solve the above-mentioned technical problems. Utility Model Content
[0005] This utility model provides a rice milling machine with stone removal function, which solves the problem that in some existing devices, when too many stones accumulate on the surface of the first filter screen to remove stones from the rice, the filtration efficiency of the device is reduced, thus reducing the overall working efficiency of the device.
[0006] To solve the above technical problems, this utility model provides a rice milling machine with stone removal function, comprising: two mounting frames, a rice milling component between the inner sides of the two mounting frames, and a stone removal component disposed on the inner side of the rice milling component near the top;
[0007] The rice milling assembly includes a rice milling cylinder disposed between two mounting brackets. The top of the rice milling cylinder has a notch near the rear side, and the bottom of the inner side of the rice milling cylinder has a first mounting port. A first filter screen is fixedly installed inside the first mounting port.
[0008] The stone removal assembly includes a filter box located inside the rice milling cylinder near the top. A rotating shaft is rotatably mounted inside the filter box. Six rotating plates are fixedly mounted on the surface of the rotating shaft. The rear end of the rotating shaft passes through the filter box and the inside of the rice milling cylinder in sequence, and extends to the inside of the notch. A cover plate is located inside the filter box near the top. Sliding blocks are slidably mounted on both the front and rear sides of the cover plate. Positioning rods are fixedly mounted on the surface of each sliding block. The end of each positioning rod away from the sliding block passes through the inside of the cover plate and extends to the inside of the filter box. Positioning holes adapted to the positioning rods are opened inside the filter box.
[0009] Preferably, a rice milling roller is rotatably arranged on the inner side of the rice milling cylinder near the bottom, and a first rotating grooved wheel is rotatably arranged on the inner side of the notch and behind the rice milling roller, with the front end of the first rotating grooved wheel fixedly connected to the rear end of the rice milling roller.
[0010] Preferably, a second rotating groove wheel is sleeved on the outer edge of the rotating shaft near the rear end. The outer edges of the second rotating groove wheel and the first rotating groove wheel are together sleeved with a belt and connected by belt drive. A first motor that drives the second rotating groove wheel to rotate is fixedly installed inside the notch.
[0011] Preferably, a second mounting port is provided at the bottom of the inner side of the filter box, and a second filter screen is fixedly installed inside the second mounting port. A movable groove is provided inside the cover plate for the sliding block to slide back and forth, and an elastic element for driving the sliding block to slide is fixedly installed inside the movable groove.
[0012] Preferably, each of the sliding blocks has a connecting block fixedly installed on its top, and the tops of the two connecting blocks on the same side are jointly fixedly installed with a connecting plate. The inner side of the cover plate has a connecting groove that allows the connecting blocks to move back and forth.
[0013] Preferably, a fixing block is fixedly installed on the surface of the rear mounting bracket, and a second motor for driving the rice milling cylinder to rotate is fixedly installed on the top of the fixing block.
[0014] Compared with related technologies, the rice milling machine with stone removal function provided by this utility model has the following advantages:
[0015] Beneficial effects:
[0016] This utility model provides a rice milling machine with stone removal function. Through the coordinated arrangement of various components of the device, the first motor drives the rotating shaft to rotate, and the rotating shaft drives the rotating plate to rotate. The rice grains to be milled on the top of the second filter screen slide back and forth upward through the six rotating plates. Then, through the free fall action, the stone particles mixed in are trapped on the second filter screen, which can effectively prevent too many stones from accumulating on the top of the second filter screen and affecting the filtration efficiency of the device. Attached Figure Description
[0017] Figure 1 A schematic diagram of a preferred embodiment of the rice milling machine with stone removal function provided by this utility model;
[0018] Figure 2 for Figure 1 A schematic diagram of the structure of the rice milling cylinder shown in the side sectional view;
[0019] Figure 3 for Figure 1 The diagram shows a side sectional view of the filter box.
[0020] The following are the labeling elements in the diagram: 10. Mounting frame; 20. Rice milling assembly; 21. Rice milling cylinder; 22. Notch; 23. First filter screen; 24. Rice milling roller; 25. First rotating grooved wheel; 26. Second rotating grooved wheel; 27. First motor; 30. Stone removal assembly; 31. Filter box; 32. Rotating shaft; 33. Rotating plate; 34. Cover plate; 35. Sliding block; 36. Positioning rod; 37. Positioning hole; 38. Second filter screen; 39. Elastic element; 40. Second motor. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of a preferred embodiment of the rice milling machine with stone removal function provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of the rice milling cylinder shown in the side sectional view; Figure 3 for Figure 1 The diagram shows a side sectional view of the filter box. A rice milling machine with stone removal function includes: two mounting frames 10, a rice milling assembly 20 between the inner sides of the two mounting frames 10, and a stone removal assembly 30 disposed on the inner side of the rice milling assembly 20 near the top;
[0023] The rice milling assembly 20 includes a rice milling cylinder 21 disposed between two mounting brackets 10. A notch 22 is provided on the top of the rice milling cylinder 21 near the rear side. A first mounting port is provided on the bottom inner side of the rice milling cylinder 21. A first filter screen 23 is fixedly installed inside the first mounting port.
[0024] After filtration, the rice grains fall into the bottom of the inner side of the rice milling cylinder 21, and are processed by the rice milling roller 24 through the action of the first rotating grooved wheel 25 and the second rotating grooved wheel 26.
[0025] The stone removal assembly 30 includes a filter box 31 located inside the rice milling cylinder 21 near the top. A rotating shaft 32 is rotatably arranged inside the filter box 31. A rotating plate 33 is fixedly installed on the surface of the rotating shaft 32, and there are six rotating plates 33. The rear end of the rotating shaft 32 passes through the filter box 31 and the inside of the rice milling cylinder 21 in sequence, and extends to the inside of the notch 22. A cover plate 34 is provided inside the filter box 31 near the top. Sliding blocks 35 are slidably arranged on both the front and rear sides of the cover plate 34. A positioning rod 36 is fixedly installed on the surface of each sliding block 35. The end of the positioning rod 36 away from the sliding block 35 passes through the inside of the cover plate 34 and extends to the inside of the filter box 31. A positioning hole 37 adapted to the positioning rod 36 is opened inside the filter box 31.
[0026] During use, the connecting plates on both sides are pulled towards the center. The connecting plates move the connecting blocks, which in turn move the sliding block 35. The sliding block 35 compresses the elastic element 39 to contract and causes the positioning rod 36 to disengage from the inside of the positioning hole 37, thereby removing the cover plate 34 from the inside of the filter box 31. The rice grains to be milled are then placed into the inside of the filter box 31, and the reaction force of the elastic element 39 causes the positioning rod 36 to be inserted into the inside of the positioning hole 37, thus installing the cover plate 34 inside the filter box 31. The first motor 27 starts working, driving the rotating shaft 32 to rotate. The rotating shaft 32 drives the rotating plate 33 to rotate. Through the six rotating plates 33, the rice grains to be milled on the top of the second filter screen 38 slide back and forth upwards. Then, through the action of free fall, the stone particles mixed in are trapped on the second filter screen 38, which can effectively prevent too many stones from accumulating on the top of the second filter screen 38 and affecting the filtration efficiency of the device.
[0027] A rice milling roller 24 is rotatably arranged on the inner side of the rice milling cylinder 21 near the bottom. A first rotating grooved wheel 25 is rotatably arranged on the inner side of the notch 22 and behind the rice milling roller 24. The front end of the first rotating grooved wheel 25 is fixedly connected to the rear end of the rice milling roller 24.
[0028] A second rotating grooved wheel 26 is fitted on the outer edge of the rotating shaft 32 near the rear end. The outer edges of the second rotating grooved wheel 26 and the first rotating grooved wheel 25 are fitted with a belt and connected by belt drive. A first motor 27 that drives the second rotating grooved wheel 26 to rotate is fixedly installed inside the notch 22.
[0029] A second mounting port is provided at the bottom of the inner side of the filter box 31. A second filter screen 38 is fixedly installed inside the second mounting port. A moving groove is provided inside the cover plate 34 for the sliding block 35 to slide back and forth. An elastic element 39 for driving the sliding block 35 to slide is fixedly installed inside the moving groove.
[0030] Each sliding block 35 has a connecting block fixedly installed on its top. The two connecting blocks on the same side have a connecting plate fixedly installed on their tops. The inner side of the cover plate 34 has a connecting groove that allows the connecting blocks to move back and forth.
[0031] A fixing block is fixedly installed on the surface of the rear mounting bracket 10, and a second motor 40 for driving the rice milling cylinder 21 to rotate is fixedly installed on the top of the fixing block;
[0032] After the device finishes its work, the second motor 40 starts working, driving the rice milling cylinder 21 to rotate, so that the opening of the rice milling cylinder 21 faces downward, making it easier to clean the garbage inside the rice milling cylinder 21 and the filter box 31.
[0033] The working principle of the rice milling machine with stone removal function provided by this utility model is as follows:
[0034] Step 1: During the use of the device, pull the connecting plates on both sides towards the center. The connecting plates drive the connecting blocks to move, and the connecting blocks drive the sliding block 35 to move. The sliding block 35 squeezes the elastic element 39 to contract and drives the positioning rod 36 to disengage from the inside of the positioning hole 37, thereby removing the cover plate 34 from the inside of the filter box 31. Put the rice grains to be milled into the inside of the filter box 31, and the reaction force of the elastic element 39 causes the positioning rod 36 to be inserted into the inside of the positioning hole 37, so that the cover plate 34 is installed inside the filter box 31.
[0035] Step 2: The first motor 27 starts working, driving the rotating shaft 32 to rotate. The rotating shaft 32 drives the rotating plate 33 to rotate. Through the six rotating plates 33, the rice grains to be milled on the top of the second filter screen 38 slide back and forth upwards. Then, through the action of free fall, the stone particles mixed in are trapped on the second filter screen 38. This can effectively prevent too many stones from accumulating on the top of the second filter screen 38 and affecting the filtration efficiency of the device.
[0036] Step 3: After filtration, the rice grains fall into the bottom of the inner side of the rice milling cylinder 21. Through the action of the first rotating groove wheel 25 and the second rotating groove wheel 26, the rice milling roller 24 is driven to process the rice grains. After the device completes its work, the second motor 40 starts to work, driving the rice milling cylinder 21 to rotate, so that the opening of the rice milling cylinder 21 faces downward, which is convenient for cleaning the garbage inside the rice milling cylinder 21 and the filter box 31.
[0037] Compared with related technologies, the rice milling machine with stone removal function provided by this utility model has the following advantages:
[0038] Beneficial effects:
[0039] Through the coordinated arrangement of various components of the device, the first motor 27 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the rotating plate 33 to rotate. The rice grains to be milled on the top of the second filter screen 38 slide back and forth upward through the six rotating plates 33. Then, through the action of free fall, the stone particles mixed in are trapped on the second filter screen 38, which can effectively prevent too many stones from accumulating on the top of the second filter screen 38 and affecting the filtration efficiency of the device.
[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A rice milling machine with stone removal function, characterized in that, include: Two mounting brackets (10), a rice milling assembly (20) is located between the inner sides of the two mounting brackets (10), and a stone removal assembly (30) is provided on the inner side of the rice milling assembly (20) near the top; The rice milling assembly (20) includes a rice milling cylinder (21) disposed between two mounting brackets (10). The top of the rice milling cylinder (21) has a notch (22) near the rear side. The bottom of the inner side of the rice milling cylinder (21) has a first mounting port. A first filter screen (23) is fixedly installed inside the first mounting port. The stone removal assembly (30) includes a filter box (31) located inside the rice milling cylinder (21) near the top. A rotating shaft (32) is rotatably arranged inside the filter box (31). A rotating plate (33) is fixedly installed on the surface of the rotating shaft (32), and there are six rotating plates (33). The rear end of the rotating shaft (32) passes through the filter box (31) and the inside of the rice milling cylinder (21) in sequence, and extends to the inside of the notch (22). A cover plate (34) is provided inside the filter box (31) near the top. Sliding blocks (35) are slidably arranged on both the front and rear sides of the cover plate (34). A positioning rod (36) is fixedly installed on the surface of each sliding block (35). The end of the positioning rod (36) away from the sliding block (35) passes through the inside of the cover plate (34) and extends to the inside of the filter box (31). A positioning hole (37) adapted to the positioning rod (36) is opened inside the filter box (31).
2. The rice milling machine with stone removal function according to claim 1, characterized in that, A rice milling roller (24) is rotatably arranged on the inner side of the rice milling cylinder (21) near the bottom. A first rotating grooved wheel (25) is rotatably arranged on the inner side of the notch (22) and behind the rice milling roller (24). The front end of the first rotating grooved wheel (25) is fixedly connected to the rear end of the rice milling roller (24).
3. The rice milling machine with stone removal function according to claim 2, characterized in that, The outer edge of the rotating shaft (32) near the rear end is fitted with a second rotating groove wheel (26). The outer edges of the second rotating groove wheel (26) and the first rotating groove wheel (25) are fitted with a belt and connected by belt drive. The inner side of the notch (22) is fixedly installed with a first motor (27) that drives the second rotating groove wheel (26) to rotate.
4. The rice milling machine with stone removal function according to claim 1, characterized in that, The filter box (31) has a second mounting port at the bottom inside. A second filter screen (38) is fixedly installed inside the second mounting port. The cover plate (34) has a moving groove inside the cover plate (34) for the sliding block (35) to slide back and forth. An elastic element (39) for driving the sliding block (35) to slide is fixedly installed inside the moving groove.
5. The rice milling machine with stone removal function according to claim 1, characterized in that, Each sliding block (35) has a connecting block fixedly installed on its top. The two connecting blocks on the same side have a connecting plate fixedly installed on their tops. The inner side of the cover plate (34) has a connecting groove that allows the connecting blocks to move back and forth.
6. The rice milling machine with stone removal function according to claim 1, characterized in that, A fixing block is fixedly installed on the surface of the mounting bracket (10) on the rear side, and a second motor (40) for driving the rice milling cylinder (21) to rotate is fixedly installed on the top of the fixing block.
Citation Information
Patent Citations
Rice husking machine with stone removing function
CN221889950U