A rice finishing device

Abstract

The utility model discloses a rice finishing device belongs to rice processing technical field, including casing and the sieve cylinder of rotation setting in casing, the bottom of casing is installed with the discharge gate and the discharge port, and the top fixedly connected with the feed port of casing, the top fixedly connected with hopper of feed port, the inside slide coupling of feed port has two discharge plates, through setting two movable discharge plates of feed port, and the feed gap size between discharge plate is adjusted to feed adjusting spare, can realize the flow control when material enters the sieve cylinder, by adjusting the feed gap between two discharge plates, can according to the sieve cylinder actual screening capacity flexible control material entering amount, avoided the sieve cylinder blockage, material accumulation problem of traditional device because of material overload, ensure that material and sieve cylinder contact fully, improved the effectiveness of impurity separation, guaranteed the stability of screening efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of rice processing technology, and in particular to a rice refining device. Background Technology

[0002] Rice is the staple food of nearly half the world's population, processed from the mature fruit of paddy rice. First, the paddy rice is hulled to remove the hard outer husk, resulting in brown rice, which retains the bran layer, germ, and endosperm. Further removal of the bran layer and germ produces refined white rice, which is consumed daily. Its main component is starch, providing the body with carbohydrates needed for activity quickly. It also contains small amounts of protein, B vitamins, and minerals. With a soft and sticky texture, it is suitable for cooking by steaming or boiling, and can also be used to make porridge, rice cakes, and other staple foods or snacks. It is an indispensable basic ingredient in the diet.

[0003] During rice refining, raw paddy often contains impurities such as straw, wheat stalks, hemp rope, paper scraps, clods of soil, and pebbles. If these impurities are not removed in time, they will not only affect the quality of the finished rice but may also cause wear, blockage, or even damage to subsequent processing equipment, increasing equipment maintenance costs and reducing production efficiency. Therefore, the initial cleaning and screening of paddy is a crucial step in the rice refining process, and the drum primary cleaning screen, as a key piece of equipment for this step, is widely used in rice processing production lines. Its working principle is as follows: the material enters the cylindrical screen through the feed inlet. As the screen rotates, the material passes through the screen cylinder quickly. Qualified material flows out through the discharge outlet, while larger impurities are pushed out through the large impurity outlet by the guide spiral on the inner wall of the screen cylinder, thus achieving the separation of material from large impurities.

[0004] However, existing drum primary cleaning screens still have the following problems in actual use:

[0005] On the one hand, traditional devices often have a direct connection between the hopper and the screen cylinder, lacking an effective feed flow regulation mechanism. This makes it difficult to flexibly control the amount of material entering the screen cylinder based on its screening capacity. When the material input is too large, it can easily cause the screen to overload, leading to material accumulation and blockage inside the screen cylinder, resulting in poor screening channels. Furthermore, the inability of the material to fully contact the screen reduces the screening effect, causing some impurities to be discharged with the material without effective separation, severely affecting screening quality and efficiency.

[0006] On the other hand, during the screening process, some fine impurities, dust, or sticky materials easily adhere to the surface of the screen holes in the screen cylinder, or even become embedded in the screen holes, causing blockage. As the degree of blockage increases, the screening capacity of the screen cylinder will decrease significantly, further reducing screening efficiency. At the same time, frequent shutdowns are required for manual cleaning of the screen cylinder, increasing operational complexity and labor intensity, and affecting the continuity of production. Utility Model Content

[0007] The main objective of this invention is to provide a rice refining device that can effectively solve the problems in the background art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A rice refining device includes a shell and a sieve cylinder rotatably disposed inside the shell, wherein a discharge port and a waste discharge port are installed at the bottom of the shell;

[0010] A feed inlet is fixedly connected to the top of the housing, and a hopper is fixedly connected to the top of the feed inlet. Two discharge plates are slidably connected inside the feed inlet, and a feed adjustment component for adjusting the opposite movement of the two discharge plates is installed on one side of the feed inlet.

[0011] Two fixing rings are fixedly connected to the outer wall of the screen cylinder. Several pressing blocks are fixedly connected to the outside of the fixing rings. A horizontal plate is provided above the screen cylinder. Two pressure blocks corresponding to the pressing blocks are fixedly connected to the bottom of the horizontal plate. Several striking balls are fixedly connected to the bottom of the horizontal plate in a horizontal array for striking the screen cylinder. An elastic element for resetting the horizontal plate is provided at the top of the horizontal plate.

[0012] Preferably, the feed adjustment component includes a cover, a screw, and a movable plate. The cover is fixedly connected to one side of the feed inlet. Rotating rods are fixedly connected to the upper and lower ends of the screw. The rotating rods are rotatably connected to rotating holes opened at the upper and lower ends of the cover. A knob is also installed on the top of the upper rotating rod for manual control of the feed adjustment component. Second sliders are fixedly connected to both sides of the movable plate. The second sliders are slidably connected to second sliding openings opened on both sides of the cover. A screw hole is opened on the top of the movable plate for threaded connection with the screw. A connecting component for pushing the unloading plate to move horizontally is installed between the movable plate and the unloading plate.

[0013] Preferably, the connecting member includes a pin and a connecting rod. The two sides of the unloading plate are fixedly connected to a first slider. The first slider is slidably connected to the first sliding openings on the left and right sides of the feed inlet. Corresponding pins are fixedly connected to the sidewalls of the first sliders on the side of the moving plate near the unloading plate and the side of the unloading plate near the moving plate. The pins are interlocked with a set of symmetrical pin holes on one side of the connecting rod.

[0014] Preferably, the unloading plate is interlocked with the strip-shaped openings on the front and rear surfaces of the feed inlet.

[0015] Preferably, the elastic element includes a guide rod, a top plate, and a spring. The guide rods are fixedly connected to the top of the horizontal plate in a horizontal array, and there are several guide rods. The top of the housing has a guide hole for inserting and installing the guide rods. The top plate is fixedly connected to the top of the guide rods. The spring is sleeved on the outside of the guide rods and is also fixedly connected between the top plate and the opposite surface of the screen cylinder.

[0016] Preferably, the extrusion blocks are fixedly connected to the outer wall of the fixed ring in a ring array, and the extrusion blocks and the pressure blocks are semi-circular in shape.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By setting two discharge plates that can move in opposite directions at the feed inlet, and using a feed adjustment component to adjust the size of the feed gap between the discharge plates, the flow rate of material entering the screen cylinder can be controlled. Thus, by adjusting the feed gap between the two discharge plates, the amount of material entering can be flexibly controlled according to the actual screening capacity of the screen cylinder, avoiding the problems of screen cylinder blockage and material accumulation caused by material overload in traditional devices, ensuring full contact between the material and the screen cylinder, improving the effectiveness of impurity separation, and ensuring the stability of screening efficiency.

[0019] By utilizing the rotation of the screen cylinder itself, the fixed ring on the outer wall of the screen cylinder rotates with the screen cylinder. As the ring rotates, the semi-circular extrusion block on the ring periodically extrudes the pressure block at the bottom of the horizontal plate, pushing the horizontal plate upward and stretching the elastic element. When the extrusion block and the pressure block disengage, the restoring force of the elastic element causes the horizontal plate to move downward quickly, causing the striking ball at the bottom to repeatedly strike the outer wall of the screen cylinder. This high-frequency mechanical striking can promptly shake off fine impurities and sticky materials adhering to the surface of the screen holes, preventing screen blockage. It eliminates the need for frequent machine shutdowns for manual cleaning, ensuring continuous operation of the production line and significantly reducing the labor intensity of operators. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the shell of this utility model;

[0022] Figure 3 This is a schematic diagram of the feed inlet structure of this utility model;

[0023] Figure 4 This is a structural breakdown diagram of the feed adjustment component of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the fixing ring of this utility model;

[0025] Figure 6This is a schematic diagram of the elastic element of this utility model.

[0026] In the diagram: 1. Shell; 2. Screen cylinder; 3. Feed inlet; 4. Discharge outlet; 5. Impurity outlet; 6. Hopper; 7. Strip-shaped opening; 8. First sliding opening; 9. Discharge plate; 10. First slider; 11. Cover; 12. Second sliding opening; 13. Rotating hole; 14. Screw; 15. Rotating rod; 16. Knob; 17. Moving plate; 18. Second slider; 19. Screw hole; 20. Pin; 21. Connecting rod; 22. Pin hole; 23. Guide hole; 24. Fixing ring; 25. Extrusion block; 26. Horizontal plate; 27. Pressure block; 28. Striking ball; 29. ​​Guide rod; 30. Top plate; 31. Spring. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] like Figure 1 - Figure 6 As shown, a rice refining device includes a housing 1 and a sieve cylinder 2 rotatably disposed inside the housing 1. A discharge port 4 and a waste discharge port 5 are installed at the bottom of the housing 1.

[0029] The top of the housing 1 is fixedly connected to the feed inlet 3, the top of the feed inlet 3 is fixedly connected to the hopper 6, the inside of the feed inlet 3 is slidably connected to two discharge plates 9, and a feed adjustment component for adjusting the two discharge plates 9 to move in opposite directions is installed on one side of the feed inlet 3.

[0030] Two fixing rings 24 are fixedly connected to the outer wall of the screen cylinder 2. Several pressing blocks 25 are fixedly connected to the outside of the fixing rings 24. A horizontal plate 26 is provided above the screen cylinder 2. Two pressure blocks 27 corresponding to the pressing blocks 25 are fixedly connected to the bottom of the horizontal plate 26. Several striking balls 28 are fixedly connected to the bottom of the horizontal plate 26 in a horizontal array for striking the screen cylinder 2. An elastic element for resetting the horizontal plate 26 is provided at the top of the horizontal plate 26.

[0031] like Figure 3 and Figure 4As shown, the feed adjustment component includes a cover 11, a screw 14, and a moving plate 17. The cover 11 is fixedly connected to one side of the feed inlet 3. Rotating rods 15 are fixedly connected to the upper and lower ends of the screw 14. The rotating rods 15 are rotatably connected to the rotating holes 13 opened at the upper and lower ends of the cover 11. A knob 16 is also installed on the top of the upper rotating rod 15 for manual control of the feed adjustment component. Second sliders 18 are fixedly connected to both sides of the moving plate 17. The second sliders 18 are slidably connected to the second sliding openings 12 opened on both sides of the cover 11. A screw hole 19 is opened on the top of the moving plate 17 for threaded connection with the screw 14. A device for pushing the unloading plate 9 is installed between the moving plate 17 and the unloading plate 9. The connecting piece for the horizontal movement of the material plate 9 allows the operator to manually rotate the knob 16 mounted on the top of the upper rotating rod 15, causing the rotating rod 15 to rotate within the rotating holes 13 at the upper and lower ends of the cover 11. This causes the screw 14, which is fixedly connected to the rotating rod 15, to rotate synchronously. Since the screw hole 19 at the top of the moving plate 17 is threadedly connected to the screw 14, and the second sliders 18 on both sides of the moving plate 17 are fitted into the second sliding openings 12 on both sides of the cover 11, the rotation of the screw 14 is converted into the up-and-down sliding of the moving plate 17 along the direction of the screw 14. The moving plate 17 is linked with the unloading plate 9 through the connecting piece, ultimately driving the unloading plate 9 to move and achieving the adjustment of the feeding gap.

[0032] like Figure 3 and Figure 4 As shown, the connecting parts include pins 20 and connecting rods 21. First sliders 10 are fixedly connected to both sides of the unloading plate 9. The first sliders 10 are slidably connected to the first sliding openings 8 on the left and right sides of the feed inlet 3. Corresponding pins 20 are fixedly connected to the sidewalls of the first sliders 10 on the side of the moving plate 17 near the unloading plate 9 and the side of the unloading plate 9 near the moving plate 17. The pins 20 are inserted into a set of symmetrical pin holes 22 on one side of the connecting rod 21. The connecting rod 21 is inserted into the pins 20 through the symmetrical pin holes 22 on one side. This forms a movable hinge structure. When the moving plate 17 slides up and down, it will push or pull the first slider 10 through the connecting rod 21. The first slider 10 is slidably connected to the first sliding openings 8 on the left and right sides of the feed port 3, which will eventually drive the unloading plate 9 to move horizontally, so as to convert the vertical linear motion of the moving plate 17 into the horizontal linear motion of the unloading plate 9, realize the opposite or reverse movement of the unloading plate 9, and accurately adjust the feed gap. The first slider 10 and the first sliding opening 8 can be set very small to prevent the material from running to the outside from the first sliding opening 8.

[0033] like Figure 3 and Figure 4As shown, the unloading plate 9 is interlocked with the strip-shaped openings 7 on the front and rear surfaces of the feed inlet 3. When the connecting piece drives the unloading plate 9 to move horizontally, the unloading plate 9 can slide along the length direction of the strip-shaped opening 7, changing the relative position of the two unloading plates 9 inside the feed inlet 3. The strip-shaped opening 7 provides a limit and guide for the horizontal movement of the unloading plate 9, ensuring that the unloading plate 9 always moves within the preset trajectory, and avoiding the failure of the feed gap adjustment due to the offset of the unloading plate 9.

[0034] like Figure 5 and Figure 6 As shown, the elastic element includes a guide rod 29, a top plate 30, and a spring 31. The guide rods 29 are fixedly connected to the top of the horizontal plate 26 in a horizontal array, and there are several guide rods 29. The top of the housing 1 has a guide hole 23 for inserting and installing the guide rods 29. The top plate 30 is fixedly connected to the top of the guide rods 29. The spring 31 is fitted on the outside of the guide rods 29. The spring 31 is also fixedly connected between the top plate 30 and the opposite surface of the screen cylinder 2. When the horizontal plate 26 moves upward under the action of the pressing block 25 and the pressing block 27, it will drive the guide rod 29 to move upward along the guide hole 23. The top plate 30 moves upward synchronously and stretches the spring 31. When the pressing force disappears, the reset force of the spring 31 will pull the top plate 30, the guide rod 29 and the horizontal plate 26 to move downward and reset, providing a stable reset force for the horizontal plate 26, ensuring that the striking ball 28 at the bottom of the horizontal plate 26 can repeatedly strike the screen cylinder 2, continuously cleaning the impurities on the surface of the screen cylinder 2 and preventing the screen holes from clogging.

[0035] like Figure 5 and Figure 6 As shown, the extrusion blocks 25 are fixedly connected to the outer wall of the fixed ring 24 in a ring array. The extrusion blocks 25 and the pressure blocks 27 are semi-circular in shape. When the screen cylinder 2 rotates, it will drive the fixed ring 24 and the extrusion blocks 25 to rotate synchronously. The extrusion blocks 25 are driven by the rotational power of the screen cylinder 2 itself, without the need for an additional power source, thus reducing the energy consumption of the equipment. The semi-circular extrusion blocks 25 and the pressure blocks 27 cooperate to gradually apply and eliminate the extrusion force, avoiding damage to the components caused by excessive instantaneous impact force, ensuring the stability of the equipment operation. The rotating extrusion blocks 25 will periodically contact the pressure blocks 27 at the bottom of the horizontal plate 26 and generate an upward extrusion force on the pressure blocks 27, pushing the horizontal plate 26 to move upward, so that the horizontal plate 26 can achieve up-and-down reciprocating motion under the action of the elastic element.

[0036] The specific operating principle of this rice refining device is as follows:

[0037] To prevent excessive material input from causing material accumulation and blockage in the screen cylinder, the flow rate of material entering the screen cylinder 2 can be adjusted. The operator manually rotates the knob 16 at the upper end of the cover 11 in the feed adjustment component. The knob 16 drives the rotating rod 15 to rotate in the rotating hole 13, and the rotating rod 15 drives the screw 14 to rotate. Since the top of the moving plate 17 has a screw hole 19 that is threaded to the screw 14, the moving plate 17 will move upward in the cover 11 through the screw hole 19 along the screw 14. During the movement, the second sliders 18 on both sides of the moving plate 17 slide in the second sliding openings 12 on both sides of the cover 11. At this time, because the connecting rod 21 is hinged between the moving plate 17 and the first slider 10 installed on one side of the unloading plate 9, the pin 20 installed on the opposite side of the first slider 10 and the moving plate 17... The pin hole 22 on one side of the connecting rod 21 is inserted, so that when the moving plate 17 moves upward, it will force the connecting rod 21 to tilt, and the angle formed between the symmetrical connecting rods 21 will gradually increase. This will push the first slider 10 on both sides of the discharge plate 9 to slide in the first sliding opening 8 on the left and right sides of the feed inlet 3, so that the discharge plate 9 moves outward through the strip-shaped opening 7 on the front and rear surfaces of the feed inlet 3. When the moving plate 17 moves up and down, it drives the two discharge plates 9 to move towards each other through the connecting rod 21, thereby adjusting the size of the feed gap between the two discharge plates 9 and controlling the flow rate of the material entering the screen cylinder 2. The larger the gap, the larger the flow rate, and the smaller the gap, the smaller the flow rate. After the rice and other materials are poured into the hopper 6 at the top of the feed inlet 3, the material will fall vertically into the screen cylinder 2 through the gap between the discharge plates 9.

[0038] The material entering the screen cylinder 2 is screened during the rotation of the screen cylinder 2. Qualified material is discharged from the discharge port 4 at the bottom of the shell 1, while larger impurities are discharged from the impurity discharge port 5. During the screening process, when the screen cylinder 2 rotates, the fixed ring 24 rotates with the screen cylinder 2, and the pressing block 25 on it periodically presses the pressure block 27 at the bottom of the horizontal plate 26, pushing the horizontal plate 26 upward. The guide rod 29 installed at the top of the horizontal plate 26 passes through the guide hole 23 opened at the top of the shell 1 and pulls the spring 31 sleeved on the outside upward through the top plate 30 to perform an extension operation. After the extrusion block 25 disengages from the pressure block 27, the restoring force of the spring 31 will cause the top plate 30 to move downward, so that the guide rod 29 passes through the guide hole 23 and drives the horizontal plate 26 to move downward quickly. This causes several striking balls 28, which are fixedly connected in a horizontal array at the bottom of the horizontal plate 26, to repeatedly strike the outer wall of the screen cylinder 2, shaking off the fine impurities and sticky materials attached to the surface of the screen holes, preventing the screen holes from clogging, thus ensuring the continuous and efficient operation of the screening work, without the need for frequent shutdowns for manual cleaning. This not only ensures the continuous operation of the production line, but also greatly reduces the labor intensity of the operators.

[0039] The above description is merely 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, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements 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 refining device, comprising a shell (1) and a sieve cylinder (2) rotatably disposed inside the shell (1), wherein a discharge port (4) and a waste discharge port (5) are installed at the bottom of the shell (1); Its features are: The top of the housing (1) is fixedly connected to a feed inlet (3), and the top of the feed inlet (3) is fixedly connected to a hopper (6). The inside of the feed inlet (3) is slidably connected to two discharge plates (9). A feed adjustment component for adjusting the movement of the two discharge plates (9) in opposite directions is installed on one side of the feed inlet (3). Two fixing rings (24) are fixedly connected to the outer wall of the screen cylinder (2). Several pressing blocks (25) are fixedly connected to the outside of the fixing rings (24). A horizontal plate (26) is provided above the screen cylinder (2). Two pressure blocks (27) corresponding to the pressing blocks (25) are fixedly connected to the bottom of the horizontal plate (26). Several striking balls (28) are fixedly connected to the bottom of the horizontal plate (26) in a horizontal array for striking the screen cylinder (2). An elastic element for resetting the horizontal plate (26) is provided at the top of the horizontal plate (26).

2. The rice refining device according to claim 1, characterized in that: The feed adjustment component includes a cover (11), a screw (14), and a moving plate (17). The cover (11) is fixedly connected to one side of the feed inlet (3). The upper and lower ends of the screw (14) are fixedly connected to rotating rods (15). The rotating rods (15) are rotatably connected to the rotating holes (13) opened at the upper and lower ends of the cover (11). A knob (16) is also installed on the top of the upper rotating rod (15) for manually controlling the feed adjustment component. The two sides of the moving plate (17) are fixedly connected to second sliders (18). The second sliders (18) are slidably connected to the second sliding openings (12) opened on both sides of the cover (11). The top of the moving plate (17) is provided with a screw hole (19) that is threadedly connected to the screw (14). A connecting component for pushing the unloading plate (9) to move horizontally is installed between the moving plate (17) and the unloading plate (9).

3. The rice refining device according to claim 2, characterized in that: The connecting component includes a pin (20) and a connecting rod (21). The two sides of the unloading plate (9) are fixedly connected to a first slider (10). The first slider (10) is slidably connected to the first sliding opening (8) opened on the left and right sides of the feed inlet (3). The side wall of the first slider (10) on the side of the moving plate (17) near the unloading plate (9) and the side of the unloading plate (9) near the moving plate (17) are fixedly connected to corresponding pins (20). The pins (20) are interlocked with a set of symmetrical pin holes (22) opened on one side of the connecting rod (21).

4. The rice refining device according to claim 3, characterized in that: The unloading plate (9) is interlocked with the strip-shaped openings (7) on the front and rear surfaces of the feed inlet (3).

5. The rice refining device according to claim 1, characterized in that: The elastic element includes a guide rod (29), a top plate (30), and a spring (31). The guide rod (29) is fixedly connected to the top of the horizontal plate (26) in a horizontal array, and there are several guide rods (29). The top of the housing (1) is provided with a guide hole (23) for inserting and installing the guide rod (29). The top plate (30) is fixedly connected to the top of the guide rod (29). The spring (31) is fitted on the outside of the guide rod (29). The spring (31) is also fixedly connected between the top plate (30) and the opposite surface of the screen cylinder (2).

6. The rice refining device according to claim 1, characterized in that: The extrusion blocks (25) are fixedly connected to the outer wall of the fixed ring (24) in a ring array, and the extrusion blocks (25) and the pressure blocks (27) are semi-circular in shape.

Images