Broken rice screening device for fine rice processing

Abstract

This utility model discloses a broken rice screening device for refined rice processing, belonging to the field of refined rice processing. It includes a screening box, inside which a set of symmetrical rollers is movably connected via a rotating shaft. A screening belt is fitted around the outer side of each roller, and the screening belt and rollers form a chain drive structure. Inside the screening box, a set of symmetrical rollers is movably connected via a rotating shaft, and a screening belt is fitted around the outer side of each roller. Through the setting of a control component, rollers rotate synchronously with rollers, and under the action of the chain belt and sprockets, the two rollers rotate synchronously, thereby controlling the synchronous rotation of screening belts one and two. This facilitates the synchronous screening of rice grains falling on the screening belts, allowing for simultaneous secondary screening and enabling the separation of rice grains of different sizes, resulting in a finer screening effect.

Description

Technical Field

[0001] This utility model relates to the field of refined rice processing, and more specifically, to a broken rice screening device for refined rice processing. Background Technology

[0002] Rice polishing is an important step in paddy processing. Its purpose is to remove the husk, bran, and impurities from the paddy to obtain edible polished white rice. During the processing, the paddy undergoes dehulling, milling, and other processes, resulting in rice grains of different sizes, including whole grains, medium-sized broken rice, and small broken rice. In order to improve the quality and market value of polished rice, it is usually necessary to grade and screen the rice grains so that different sizes of rice grains can be classified and processed or used for different purposes.

[0003] Existing broken rice screening devices mostly use single-layer screens or vibrating screens, which have low screening efficiency and are difficult to achieve multi-stage fine screening. In addition, the screens are prone to clogging due to rice grains getting stuck during long-term use, affecting the screening effect and even causing equipment failure. Therefore, we have proposed a broken rice screening device for fine rice processing to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a broken rice screening device for refined rice processing. Through a set control component, roller two rotates synchronously with roller one. Furthermore, under the action of chain belt two and sprocket two, the two rollers two rotate synchronously, thereby controlling the synchronous rotation of screen belt one and screen belt two. This facilitates the simultaneous screening of rice grains falling on the screen belts, allowing for simultaneous secondary screening and enabling the separation of rice grains of different sizes, resulting in a finer screening effect. Through a set cleaning component, due to the movable cooperation between the drive column and the inner side of the guide frame, and the screen box restricting the movement direction of the cleaning strip, the cleaning strip is controlled to reciprocate within the screen box. This reciprocating movement allows the cleaning strip to simultaneously clean the screen holes of screen belt one and screen belt two, preventing rice grains from getting stuck inside the screen holes.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A broken rice sieving device for polished rice processing includes a sieve box. Inside the sieve box, a set of symmetrical rollers (first type) is movably connected via a rotating shaft. A sieve belt (first type) is fitted around the outer side of each roller, forming a chain drive structure. Inside the sieve box, a set of symmetrical rollers (second type) is movably connected via a rotating shaft. A sieve belt (second type) is fitted around the outer side of each roller, forming a chain drive structure. The sieve belt (second type) is located inside the sieve belt (first type). A control component is provided on the sieve box for driving the sieve belts (first and second types) through the chain drive. The screen box is equipped with a cleaning component for cleaning the surfaces of screen belt one and screen belt two. A feed pipe is fixedly connected to the top of the screen box. A discharge pipe one is fixedly connected to the screen box and is located at the tail end of screen belt one. A discharge pipe two is fixedly connected to the inside of the screen box and is located at the tail end of screen belt two. A discharge pipe three is fixedly connected to the inside of the screen box and is located inside screen belt two. A partition is fixedly connected to the inside of the screen box, and both screen belt one and screen belt two can move through the partition.

[0009] Furthermore, the control component includes a first sprocket, a second sprocket, a first chain belt, and a second chain belt. The first sprocket is fixedly connected to the shaft end of the first roller, and the first chain belt is sleeved on the outer side of the first sprocket. The first sprocket and the first chain belt constitute a chain drive structure. The second sprocket is fixedly connected to the shaft end of the second roller, and the second chain belt is sleeved on the outer side of the second sprocket. The second sprocket and the second chain belt constitute a chain drive structure. The second chain belt is located inside the first chain belt.

[0010] Furthermore, the control component also includes sprocket three, sprocket four, and chain belt three. Sprocket three is fixedly connected to the shaft end of one of the rollers, and sprocket four is fixedly connected to the shaft end of one of the rollers. Chain belt three is sleeved on the outside of sprocket three and sprocket four. Sprocket three, sprocket four, and chain belt three constitute a chain drive structure.

[0011] Furthermore, a servo motor is fixedly connected to the outside of the screen box, and the output end of the servo motor is fixedly connected to the shaft end of the first roller. The first sprocket, the second sprocket, the first chain belt and the second chain belt are located on one side of the screen box, and the third sprocket, the fourth sprocket, the third chain belt and the servo motor are located on the other side of the screen box.

[0012] Furthermore, the cleaning assembly includes a cleaning strip, a guide frame, a disc, a drive column, and a rotating rod. The bottom end of the rotating rod is fixedly connected to the disc, the drive column is fixedly connected to the bottom end of the disc, and the drive column is away from the axis of the disc. The drive column is movably engaged with the inner side of the guide frame, and the guide frame is fixedly connected to the end of the cleaning strip.

[0013] Furthermore, the cleaning assembly also includes a first conical wheel and a second conical wheel. The first conical wheel is fixedly connected to the end of the rotating shaft of the second roller. The rotating rod passes through the second conical wheel and is fixedly connected to the second conical wheel. The first conical wheel and the second conical wheel mesh with each other. A fixing block is fixedly connected to the outside of the screen box, and the rotating rod moves through the fixing block.

[0014] Furthermore, the cleaning strip is movably connected to the inside of the screen box, with the bottom of the cleaning strip fitting against the bottom of the first screen belt and the top of the cleaning strip fitting against the bottom of the second screen belt.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) In this scheme, the control components are set so that the roller 2 rotates synchronously with the roller 1, and under the action of the chain belt 2 and the sprocket 2, the two rollers 2 rotate synchronously, thereby controlling the screen belt 1 and the screen belt 2 to rotate synchronously, which is conducive to the synchronous screening of rice grains falling on the screen belt, making it convenient for the secondary screening to be carried out at the same time, and is conducive to screening out rice grains of different sizes, making the screening effect more refined.

[0018] (2) In this solution, the cleaning component is set up so that the drive column and the inner side of the guide frame move together and the screen box restricts the movement direction of the cleaning strip. Therefore, the cleaning strip is controlled to move back and forth inside the screen box. Through the reciprocating movement, the cleaning strip can clean the screen holes of screen belt one and screen belt two at the same time, so as to avoid rice grains getting stuck inside the screen holes. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0021] Figure 3 This is a schematic diagram of the internal structure of the sieve box of this utility model;

[0022] Figure 4 This utility model Figure 3 Partial cross-sectional view;

[0023] Figure 5 For the present utility model Figure 3 Schematic diagram of the exploded structure.

[0024] Explanation of the labels in the diagram:

[0025] 1. Screen box; 2. Roller 1; 3. Screen belt 1; 4. Roller 2; 5. Screen belt 2; 6. Control components; 601. Sprocket 1; 602. Sprocket 2; 603. Chain belt 1; 604. Chain belt 2; 605. Sprocket 3; 606. Sprocket 4; 607. Chain belt 3; 7. Cleaning components; 701. Cleaning bar; 702. Guide frame; 703. Disc; 704. Drive column; 705. Rotary rod; 706. Conical wheel 1; 707. Conical wheel 2; 8. Feed pipe; 9. Discharge pipe 1; 10. Discharge pipe 2; 11. Discharge pipe 3; 12. Baffle; 13. Servo motor; 14. Fixing block. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. 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.

[0027] Example 1:

[0028] like Figure 1-5 As shown, this utility model provides a technical solution: a broken rice sieving device for rice processing, including a sieve box 1. A set of symmetrical rollers 2 are movably connected inside the sieve box 1 via a rotating shaft. A sieve belt 3 is fitted around the outer side of each roller 2. The sieve belt 3 and rollers 2 form a chain drive structure. A set of symmetrical rollers 4 are movably connected inside the sieve box 1 via a rotating shaft. A sieve belt 5 is fitted around the outer side of each roller 4. The rollers 4 and sieve belt 5 form a chain drive structure. The sieve belt 5 is located inside the sieve belt 3. A control component 6 is provided on the sieve box 1 for driving the sieve belt 3 and sieve belt 5. A cleaning device is provided inside the sieve box 1. Component 7 is used to clean the surfaces of screen belt 3 and screen belt 5. The top of the screen box 1 is fixedly connected to the feed pipe 8. The screen box 1 is fixedly connected to the discharge pipe 9, which is located at the end of screen belt 3. The screen box 1 is fixedly connected to the discharge pipe 10, which is located at the end of screen belt 5. The screen box 1 is fixedly connected to the discharge pipe 11, which is located inside screen belt 5. The screen box 1 is fixedly connected to the discharge pipe 11, which is located inside screen belt 5. The screen box 1 is fixedly connected to the partition 12, and screen belts 3 and 2 are movable through the partition 12. The partition 12 prevents rice grains that fall onto screen belts 3 and 2 from moving in the opposite direction to the screen belts.

[0029] Raw rice is fed into the sieve box 1 through the feed pipe 8. The raw rice falls onto the first sieve belt 3. As the sieve belt moves forward, the first sieve belt 3 has several sieve holes 1. The raw rice is initially sieved through the sieve holes 1. Whole rice grains remain on the first sieve belt 3 and move to the end of the first sieve belt 3 and are discharged from the discharge pipe 9. Broken rice that passes through the sieve holes 1 falls onto the second sieve belt 5. The second sieve belt 5 has sieve holes 2. Under the action of the sieve holes 2, the broken rice is sieved in a secondary manner. Medium-sized broken rice particles move along the surface of the second sieve belt 5 to its end and are discharged from the discharge pipe 2 10. Small broken rice particles pass through the sieve holes 2 and fall into the interior of the third discharge pipe 11 and are discharged. In this way, rice grains of different sizes are quickly obtained, and fine sieving of the raw rice is achieved.

[0030] Example 2:

[0031] like Figure 1 , Figure 4 and Figure 5 As shown, control component 6 includes sprocket 1 601, sprocket 2 602, chain belt 1 603, and chain belt 2 604. Sprocket 1 601 is fixedly connected to the shaft end of roller 2, and chain belt 1 603 is sleeved on the outer side of sprocket 1 601. Sprocket 1 601 and chain belt 1 603 constitute a chain drive structure. Sprocket 2 602 is fixedly connected to the shaft end of roller 2 4, and chain belt 2 604 is sleeved on the outer side of sprocket 2 602. Sprocket 2 602 and chain belt 2 604 constitute a chain drive structure. Chain belt 2 604 is located inside chain belt 1 603. Control component 6 also includes sprocket 3 605, sprocket 4 606, and chain belt 3 607, one of which... A sprocket 605 is fixedly connected to the end of the shaft of one of the rollers 2. A sprocket 606 is fixedly connected to the end of the shaft of one of the rollers 4. A chain belt 607 is sleeved on the outside of the sprockets 605 and 606. The sprockets 605, 606 and 607 form a chain drive structure. A servo motor 13 is fixedly connected to the outside of the screen box 1. The output end of the servo motor 13 is fixedly connected to the end of the shaft of the roller 2. The sprockets 601, 602, 603 and 604 are located on one side of the screen box 1, and the sprockets 605, 606 and 607 and the servo motor 13 are located on the other side of the screen box 1.

[0032] The servo motor 13 is started, driving roller 2 to rotate, which in turn causes sprocket 601 to rotate. Under the action of chain belt 603, another sprocket 601 rotates synchronously, thereby controlling the synchronous rotation of two rollers 2. This enables the screen belt 3 to rotate inside the screen box 1. Under the action of sprocket 3 605, sprocket 4 606, and chain belt 3 607, roller 4 rotates synchronously with roller 2. Furthermore, under the action of chain belt 2 604 and sprocket 2 602, two rollers 4 rotate synchronously, thereby controlling the synchronous rotation of screen belt 3 and screen belt 5. This facilitates the synchronous screening of rice grains falling on the screen belt, allowing for simultaneous secondary screening and enabling the separation of rice grains of different sizes, resulting in a finer screening effect.

[0033] Example 3:

[0034] like Figure 1 , Figure 4 and Figure 5 As shown, the cleaning assembly 7 includes a cleaning strip 701, a guide frame 702, a disc 703, a drive post 704, and a rotating rod 705. The bottom end of the rotating rod 705 is fixedly connected to the disc 703. The drive post 704 is fixedly connected to the bottom end of the disc 703, and the drive post 704 is away from the axis of the disc 703. The drive post 704 is movably engaged with the inner side of the guide frame 702. The guide frame 702 is fixedly connected to the end of the cleaning strip 701. The cleaning assembly 7 also includes a first conical wheel 706 and a second conical wheel 707. Conical wheel 706 is fixedly connected to the end of the rotating shaft of roller 4. Rotating rod 705 passes through conical wheel 707 and is fixedly connected to conical wheel 707. Conical wheel 706 and conical wheel 707 mesh with each other. A fixing block 14 is fixedly connected to the outside of the screen box 1. Rotating rod 705 moves through fixing block 14. Cleaning strip 701 is movably connected to the inside of the screen box 1. The bottom of cleaning strip 701 is in contact with the bottom of screen belt 3 and the top of cleaning strip 701 is in contact with the bottom of screen belt 5.

[0035] While the roller 4 rotates, it drives the cone wheel 706 to rotate synchronously. Since the cone wheel 706 and the cone wheel 707 mesh, the cone wheel 707 and the rotating rod 705 are controlled to rotate synchronously, which drives the drive column 704 to rotate around the axis of the rotating rod 705. Since the drive column 704 is in movable cooperation with the inner side of the guide frame 702, and the screen box 1 restricts the movement direction of the cleaning strip 701, the cleaning strip 701 is controlled to move back and forth inside the screen box 1. Through the reciprocating movement, the cleaning strip 701 can clean the screen holes of the screen belt 3 and the screen belt 5 at the same time, avoiding rice grains from getting stuck inside the screen holes.

[0036] Working principle: In use, firstly, the servo motor 13 is started, driving roller 2 to rotate, which in turn causes sprocket 601 to rotate. Under the action of chain belt 603, another sprocket 601 rotates synchronously, thereby controlling the synchronous rotation of the two rollers 2, realizing the rotation of screen belt 3 inside screen box 1. Under the action of sprocket 3 605, sprocket 4 606, and chain belt 3 607, roller 4 rotates synchronously with roller 2, and the chain belt 2 604 and sprocket 4... Under the action of 602, the two rollers 4 rotate synchronously, thereby controlling the synchronous rotation of screen belt 3 and screen belt 5. Then, the raw rice is put into the screen box 1 through the feed pipe 8. The raw rice falls onto screen belt 3. As the screen belt moves forward, screen belt 3 has several screen holes 1. The raw rice is initially screened through the screen holes 1. The whole rice grains stay on screen belt 3 and move to the end of screen belt 3 and are discharged from the discharge pipe 9. The broken rice that passes through the screen holes 1 falls off. The rice falls onto the second screen belt 5, which has two screen holes. Under the action of the screen holes, the broken rice is screened in two stages. Medium-sized broken rice particles move along the surface of the second screen belt 5 to its end and are discharged from the second discharge pipe 10. Small broken rice particles pass through the screen holes and fall into the discharge pipe 11 and are discharged. During the screening process, the second roller 4 rotates and drives the first cone wheel 706 to rotate synchronously. Since the first cone wheel 706 and the second cone wheel 707 mesh, the second cone wheel 707 is controlled to rotate synchronously with the rotating rod 705, which drives the drive column 704 to rotate around the axis of the rotating rod 705. Since the drive column 704 is in movable cooperation with the inner side of the guide frame 702 and the screen box 1 restricts the movement direction of the cleaning bar 701, the cleaning bar 701 is controlled to move back and forth inside the screen box 1. Through the reciprocating movement, the cleaning bar 701 can clean the screen holes of the first screen belt 3 and the second screen belt 5 at the same time, avoiding rice particles from getting stuck inside the screen holes.

[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A broken rice sieving device for polished rice processing, comprising a sieve box (1), characterized in that: The screen box (1) is internally connected to a set of symmetrical rollers (2) via a rotating shaft, and a screen belt (3) is fitted on the outer side of the rollers (2). The screen belt (3) and the rollers (2) constitute a chain drive structure. The screen box (1) is internally connected to a set of symmetrical rollers (4) via a rotating shaft, and a screen belt (5) is fitted on the outer side of the rollers (4). The rollers (4) and the screen belt (5) constitute a chain drive structure. The screen belt (5) is located inside the screen belt (3). The screen box (1) is equipped with a control component (6) for driving the screen belts (3) and (5) to move. The screen box (1) is internally equipped with a cleaning component. 7) is used to clean the surface of screen belt 1 (3) and screen belt 2 (5). The top of the screen box (1) is fixedly connected to the feed pipe (8). The screen box (1) is fixedly connected to the discharge pipe 1 (9), and the discharge pipe 1 (9) is located at the tail end of screen belt 1 (3). The screen box (1) is fixedly connected to the inside of the discharge pipe 2 (10), and the discharge pipe 2 (10) is located at the tail end of screen belt 2 (5). The screen box (1) is fixedly connected to the inside of the discharge pipe 3 (11), and the discharge pipe 3 (11) is located inside screen belt 2 (5). The screen box (1) is fixedly connected to the inside of the partition plate (12), and screen belt 1 (3) and screen belt 2 (5) both move through the partition plate (12).

2. The broken rice screening device for polished rice processing according to claim 1, characterized in that: The control component (6) includes a first sprocket (601), a second sprocket (602), a first chain belt (603), and a second chain belt (604). The first roller (2) is fixedly connected to the first sprocket (601) at the end of its rotating shaft, and the first chain belt (603) is sleeved on the outside of the first sprocket (601). The first sprocket (601) and the first chain belt (603) constitute a chain drive structure. The second roller (4) is fixedly connected to the second sprocket (602) at the end of its rotating shaft, and the second chain belt (604) is sleeved on the outside of the second sprocket (602). The second sprocket (602) and the second chain belt (604) constitute a chain drive structure. The second chain belt (604) is located inside the first chain belt (603).

3. The broken rice screening device for polished rice processing according to claim 2, characterized in that: The control component (6) further includes sprocket three (605), sprocket four (606) and chain belt three (607). Sprocket three (605) is fixedly connected to the shaft end of one of the rollers (2), and sprocket four (606) is fixedly connected to the shaft end of one of the rollers (4). Chain belt three (607) is sleeved on the outside of sprocket three (605) and sprocket four (606). Sprocket three (605), sprocket four (606) and chain belt three (607) constitute a chain drive structure.

4. The broken rice screening device for polished rice processing according to claim 3, characterized in that: A servo motor (13) is fixedly connected to the outside of the screen box (1), and the output end of the servo motor (13) is fixedly connected to the shaft end of the roller (2). The sprocket (601), sprocket (602), chain belt (603) and chain belt (604) are located on one side of the screen box (1), and the sprocket (605), sprocket (606), chain belt (607) and servo motor (13) are located on the other side of the screen box (1).

5. The broken rice screening device for polished rice processing according to claim 1, characterized in that: The cleaning assembly (7) includes a cleaning strip (701), a guide frame (702), a disc (703), a drive column (704), and a rotating rod (705). The bottom end of the rotating rod (705) is fixedly connected to the disc (703). The drive column (704) is fixedly connected to the bottom end of the disc (703) and is away from the axis of the disc (703). The drive column (704) is movably engaged with the inner side of the guide frame (702). The guide frame (702) is fixedly connected to the end of the cleaning strip (701).

6. The broken rice screening device for polished rice processing according to claim 5, characterized in that: The cleaning assembly (7) also includes a first conical wheel (706) and a second conical wheel (707). The first conical wheel (706) is fixedly connected to the end of the rotating shaft of the second roller (4). The rotating rod (705) passes through the second conical wheel (707) and is fixedly connected to the second conical wheel (707). The first conical wheel (706) and the second conical wheel (707) mesh with each other. A fixing block (14) is fixedly connected to the outside of the screen box (1). The rotating rod (705) moves through the fixing block (14).

7. The broken rice screening device for polished rice processing according to claim 6, characterized in that: The cleaning strip (701) is movably connected to the inside of the screen box (1). The bottom of the cleaning strip (701) is in contact with the bottom of the first screen belt (3), and the top of the cleaning strip (701) is in contact with the bottom of the second screen belt (5).

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