Aperture-adjustable modular rice purification cylindrical screen

Abstract

The utility model relates to the technical field of grain processing equipment discloses a modular rice purification cylinder screen with adjustable aperture, which comprises a tank body, a dust falling mechanism is arranged on one side of the tank body, the dust falling mechanism comprises a dust collecting box arranged on one side of the outer wall of the tank body, an air inlet frame is connected to the upper end of the dust collecting box, a water pump is arranged in the middle of the rear end of the upper surface of the dust collecting box, a first water pipe is fixedly connected to the output end of the water pump, a second water pipe is fixedly connected to the end of the first water pipe away from the water pump, a plurality of spray heads are fixedly connected to the pipe body of the second water pipe, an air outlet pipe is fixedly connected to one side of the rear end of the upper surface of the dust collecting box, a third motor is arranged in the air outlet pipe, and a fan blade is fixedly connected to the output end of the third motor. In the utility model, the dust falling mechanism is arranged to collect the dust generated during work, thereby reducing the dust in the air and the impact of dust on the body.

Description

Technical Field

[0001] This utility model relates to the field of grain processing equipment technology, and in particular to a modular rice purification cylindrical screen with adjustable aperture. Background Technology

[0002] The rice purification cylindrical screen is a high-efficiency screening device specifically designed for the cleaning process of rice. With its excellent cleaning effect, large processing capacity, and minimal damage to rice grains, it has become an indispensable preliminary purification tool in modern rice processing plants, effectively improving the quality and purity of the final rice product.

[0003] Most existing rice purification cylindrical screens have poor aperture adjustment capabilities, making it impossible to adjust the aperture according to the size of the raw materials during the screening process. This results in ineffective screening and affects processing quality. In addition, most existing rice purification cylindrical screens lack dust collection capabilities. As a result, a large amount of dust is generated during the processing due to the turning of the raw materials. Long-term inhalation of this dust can easily cause respiratory diseases for workers, thus affecting their health.

[0004] Therefore, those skilled in the art have provided a modular rice purification cylindrical sieve with adjustable pore size to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a modular rice purification cylindrical sieve with adjustable aperture. This sieve utilizes a self-locking motor to drive a second gear, which in turn drives a toothed plate. The toothed plate then drives a fixed rod, which in turn drives a second sieve cylinder. Furthermore, the second sieve cylinder is limited in movement through the cooperation of a second limiting block and a limiting groove. The aperture of the sieve can be adjusted using a specific adjustment mechanism to accommodate raw materials of different sizes, thereby effectively removing impurities.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An adjustable aperture modular rice purification cylindrical sieve includes a tank body. An adjustment mechanism is provided inside the tank body. The adjustment mechanism includes a first sieve cylinder disposed inside the tank body, and a second sieve cylinder disposed inside the first sieve cylinder. A second support plate is fixedly connected to the rear outer wall of the second sieve cylinder, and a first support plate is fixedly connected to the rear outer wall of the first sieve cylinder. A fixing rod is slidably connected to the body of the first support plate, and a toothed plate is fixedly connected to the rear end of the fixing rod. Multiple second limiting blocks are fixedly connected to the front and rear ends of the second sieve cylinder body, and multiple limiting grooves are provided at the front and rear ends of the first sieve cylinder body. The adjustment mechanism also includes a self-locking motor disposed on the inner wall of the rear end of the tank body, and a second gear is fixedly connected to the output end of the self-locking motor. A dust suppression mechanism is provided on one side of the tank body. The dust suppression mechanism includes a dust collection box located on one side of the outer wall of the tank body. An air inlet frame is connected through the upper end of the dust collection box. A water pump is located in the middle of the rear end of the upper surface of the dust collection box. A first water pipe is fixedly connected to the output end of the water pump. A second water pipe is fixedly connected to the end of the first water pipe away from the water pump. Multiple nozzles are fixedly connected to the body of the second water pipe. An air outlet pipe is fixedly connected to one side of the rear end of the upper surface of the dust collection box. A third motor is installed inside the air outlet pipe. A fan blade is fixedly connected to the output end of the third motor. Through the above technical solution, the rice purification cylindrical screen uses a self-locking motor to drive a second gear, which in turn drives a toothed plate, which in turn drives a fixed rod, which in turn drives a second screen cylinder. Then, through the cooperation of a second limiting block and a limiting slide groove, the second screen cylinder is moved in a limited position. By using an adjustment mechanism, the aperture of the cylindrical screen can be adjusted to accommodate raw materials of different sizes, thereby effectively removing impurities.

[0007] Furthermore, a screening mechanism is provided on the other side of the tank body. The screening mechanism includes a first limiting block fixedly connected to the front and rear ends of the outer wall of the other side of the tank body. A rotating rod is rotatably connected to the body of the first limiting block. A first gear is fixedly connected to both ends of the rotating rod. A first bevel gear is fixedly connected to the middle of the rotating rod. The screening mechanism also includes a first fixing plate fixedly connected to one side of the tank body. A drive motor is fixedly connected to the upper surface of the first fixing plate. A second bevel gear is fixedly connected to the output end of the drive motor. The screening mechanism also includes a gear ring, a limiting concave ring, and a limiting ring. The limiting concave ring is fixedly connected to the front and rear ends of the inner wall of the tank. The limiting ring is fixedly connected to both sides of the first screen cylinder body near the middle. The gear ring is fixedly connected to the front and rear ends of the first screen cylinder body. The limiting rings all rotate inside the limiting concave rings. The gear rings all mesh with the first gears. The second bevel gear meshes with the first bevel gear. Through the above technical solution, the drive motor drives the second bevel gear, which in turn drives the meshing first bevel gear. The first bevel gear then drives the rotating rod, thereby causing the first gear to drive the meshing gear ring. Then, through the cooperation of the limiting concave ring and the limiting ring, the first screen cylinder and the second screen cylinder rotate together, thereby screening the raw materials.

[0008] Furthermore, a second fixing plate is fixedly connected to the rear end of the inner wall of the tank, the self-locking motor is fixedly connected to the upper surface of the second fixing plate, the rod body of the fixing rod is rotatably connected to the second support plate, the block body of the second limiting block slides inside the limiting groove, the toothed plate slides at the rear end of the tank, and the second gear meshes with the toothed plate. Through the above technical solution, the second screen cylinder can be limited to move by the second limiting block sliding inside the limiting groove, the toothed plate can be limited by the toothed plate body sliding at the rear end of the tank, and the second gear can drive the toothed plate by meshing with the toothed plate.

[0009] Furthermore, the second screen cylinder is limited to slide inside the first screen cylinder by the second limiting block; The above technical solution allows for adjustment of the aperture size.

[0010] Furthermore, the end of the air inlet frame away from the dust collection box is connected to the tank body through the air inlet frame, a filter screen is fixedly connected to the middle of the inner wall of the dust collection box, a fixing frame is fixedly connected to the inner wall of the air outlet pipe, the third motor is fixedly connected to the middle of the fixing frame, and the input end of the water pump passes through the filter screen to the bottom of the inner wall of the dust collection box. The above technical solution allows wastewater to be filtered through a filter screen, enabling water reuse. The water pump can draw out the filtered water by passing through the filter screen to the bottom of the dust collection box via the input end of the water pump.

[0011] Furthermore, a maintenance pipe is fixedly connected to the rear end of the upper surface of the dust collection box away from the air outlet pipe; The above technical solution facilitates the maintenance of the water tank.

[0012] Furthermore, a discharge port is provided at the lower end of the outer wall at the rear end of the tank; The above technical solution allows the screened raw materials to be discharged.

[0013] Furthermore, a feeding hopper is fixedly connected to the front end of the tank body, a waste hopper is fixedly connected to the lower end of the tank body, and a support frame is fixedly connected to the edge of the lower end of the tank body. The above technical solution facilitates the transport of raw materials through the feeding hopper and makes the cylindrical screen more stable through the support frame.

[0014] This utility model has the following beneficial effects: 1. This utility model proposes a modular rice purification cylindrical sieve with adjustable aperture. Compared with most existing rice purification cylindrical sieves, this rice purification cylindrical sieve uses a self-locking motor to drive a second gear, which in turn drives a toothed plate, which in turn drives a fixed rod. The fixed rod then drives a second sieve cylinder. Furthermore, through the cooperation of a second limiting block and a limiting slide groove, the second sieve cylinder is moved in a limited position. By using an adjustment mechanism, the aperture of the cylindrical sieve can be adjusted to accommodate raw materials of different sizes, thereby effectively removing impurities.

[0015] 2. This utility model proposes a modular rice purification cylindrical screen with adjustable aperture. Compared with most existing rice purification cylindrical screens, this rice purification cylindrical screen uses a third motor to drive the fan blades, then sucks the dust generated during processing into the air intake frame. Then, a water pump draws water from inside the dust collection box into the first and second water pipes. The water is then atomized and sprayed out through the nozzle, thereby increasing the weight of the dust and causing it to remain in the dust collection box. Through the set dust suppression mechanism, the dust generated during operation can be effectively collected, thereby effectively reducing the dust in the air and reducing the impact of dust on the body. Attached Figure Description

[0016] Figure 1 This is an isometric view of a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model. Figure 2 This is a schematic diagram of the structure of a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model; Figure 3 This is a partial cross-sectional view of a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model. Figure 4 This is a schematic diagram of the sieving mechanism in a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model. Figure 5 This is a schematic diagram of the adjustment mechanism in a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model; Figure 6 This is a schematic diagram of the dust removal mechanism in a modular rice purification cylindrical sieve with adjustable aperture proposed in this utility model. Figure 7 This is a schematic diagram of the structure of the first sieve cylinder in a modular rice purification sieve with adjustable aperture proposed in this utility model.

[0017] Legend: 1. Tank body; 2. Feed hopper; 3. Support frame; 4. Waste hopper; 5. Screening mechanism; 501. Drive motor; 502. First fixed plate; 503. Rotating rod; 504. Limiting concave ring; 505. Limiting ring; 506. Gear ring; 507. First gear; 508. First limiting block; 509. First bevel gear; 510. Second bevel gear; 6. Adjustment mechanism; 601. Limiting slide groove; 602. First support plate; 603. Toothed plate; 604. Second support plate; 605. Fixing rod; 606. First screen cylinder; 607. Second screen cylinder; 608. Second limiting block; 609. Second fixing plate; 610. Second gear; 611. Self-locking motor; 7. Dust suppression mechanism; 701. Dust collection box; 702. Water pump; 703. Maintenance pipe; 704. Air inlet frame; 705. First water pipe; 706. Second water pipe; 707. Nozzle; 708. Third motor; 709. Fan blade; 710. Filter screen; 711. Fixing frame; 712. Air outlet duct; 8. Discharge port. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] One specific embodiment of this utility model is provided: Reference Figure 1 , Figure 4 and Figure 6 An adjustable aperture modular rice purification cylindrical sieve includes a tank body 1. An adjustment mechanism 6 is provided inside the tank body 1. The adjustment mechanism 6 includes a first sieve cylinder 606 provided inside the tank body 1, a second sieve cylinder 607 provided inside the first sieve cylinder 606, a second support plate 604 fixedly connected to the rear outer wall of the second sieve cylinder 607, a first support plate 602 fixedly connected to the rear outer wall of the first sieve cylinder 606, a fixed rod 605 slidably connected to the body of the first support plate 602, a toothed plate 603 fixedly connected to the rear end of the fixed rod 605, a plurality of second limiting blocks 608 fixedly connected to the front and rear ends of the body of the second sieve cylinder 607, and a plurality of limiting grooves 601 opened at the front and rear ends of the body of the first sieve cylinder 606. The adjustment mechanism 6 also includes a self-locking motor 611 provided on the rear inner wall of the tank body 1, and a second gear 610 fixedly connected to the output end of the self-locking motor 611. A dust suppression mechanism 7 is provided on one side of the tank body 1. The dust suppression mechanism 7 includes a dust collection box 701 provided on one side of the outer wall of the tank body 1. An air inlet frame 704 is connected through the upper end of the dust collection box 701. A water pump 702 is provided in the middle of the rear end of the upper surface of the dust collection box 701. A first water pipe 705 is fixedly connected to the output end of the water pump 702. A second water pipe 706 is fixedly connected to the end of the first water pipe 705 away from the water pump 702. Multiple nozzles 707 are fixedly connected to the body of the second water pipe 706. An air outlet pipe 712 is fixedly connected to one side of the rear end of the upper surface of the dust collection box 701. A third motor 708 is provided inside the air outlet pipe 712. A fan blade 709 is fixedly connected to the output end of the third motor 708. The rice purification cylindrical sieve is driven by a self-locking motor 611, which drives a second gear 610. The second gear 610 then drives a toothed plate 603, which in turn drives a fixed rod 605. The fixed rod 605 then drives a second sieve cylinder 607. The second sieve cylinder 607 is then moved to a limited position by the cooperation of a second limiting block 608 and a limiting slide groove 601. The aperture of the cylindrical sieve can be adjusted by an adjustment mechanism 6 to accommodate raw materials of different sizes, thus effectively removing impurities.

[0020] Reference Figure 1 , Figure 3 and Figure 4A screening mechanism 5 is provided on the other side of the tank body 1. The screening mechanism 5 includes a first limiting block 508 fixedly connected to the front and rear ends of the outer wall of the other side of the tank body 1. A rotating rod 503 is rotatably connected to the body of the first limiting block 508. A first gear 507 is fixedly connected to both ends of the rotating rod 503. A first bevel gear 509 is fixedly connected to the middle of the body of the rotating rod 503. The screening mechanism 5 also includes a first fixing plate 502 fixedly connected to one side of the tank body 1. A drive motor 501 is fixedly connected to the upper surface of the first fixing plate 502. A second bevel gear 510 is fixedly connected to the output end of the drive motor 501. The screening mechanism 5 also includes a gear ring 506, a limiting concave ring 504, and a limiting ring 505. The limiting concave ring 504 is fixedly connected to the front and rear ends of the inner wall of the tank body 1. 505 is fixedly connected to both sides of the first screen cylinder 606 near the middle. The gear ring 506 is fixedly connected to the front and rear ends of the first screen cylinder 606. The limiting rings 505 rotate inside the limiting recess 504. The gear rings 506 mesh with the first gear 507. The second bevel gear 510 meshes with the first bevel gear 509. The drive motor 501 drives the second bevel gear 510, which then drives the meshing first bevel gear 509. The first bevel gear 509 drives the rotating rod 503, which in turn drives the first gear 507. The first gear 507 then drives the meshing gear ring 506. Through the cooperation of the limiting recess 504 and the limiting ring 505, the first screen cylinder 606 and the second screen cylinder 607 rotate together, thereby screening the raw materials.

[0021] Reference Figure 4 , Figure 5 and Figure 7 A second fixing plate 609 is fixedly connected to the rear end of the inner wall of the tank 1. A self-locking motor 611 is fixedly connected to the upper surface of the second fixing plate 609. The rod body of the fixing rod 605 is rotatably connected to the second support plate 604. The blocks of the second limiting block 608 slide inside the limiting groove 601. The plate body of the toothed plate 603 slides at the rear end of the tank 1. The second gear 610 meshes with the toothed plate 603. By sliding the second limiting block 608 inside the limiting groove 601, the second screen cylinder 607 can be limited to move. By sliding the plate body of the toothed plate 603 at the rear end of the tank 1, the toothed plate 603 can be limited. By meshing the second gear 610 with the toothed plate 603, the second gear 610 can drive the toothed plate 603. The second screen cylinder 607 slides within the first screen cylinder 606 through the second limiting block 608, thereby adjusting the size of the aperture.

[0022] Reference Figure 6The end of the air inlet frame 704 away from the dust collection box 701 is connected to the tank body 1. A filter screen 710 is fixedly connected to the middle of the inner wall of the dust collection box 701. A fixing frame 711 is fixedly connected to the inner wall of the air outlet pipe 712. The third motor 708 is fixedly connected to the middle of the fixing frame 711. The input end of the water pump 702 passes through the filter screen 710 to the bottom of the inner wall of the dust collection box 701. Wastewater can be filtered through the filter screen 710, and the water can be reused. The water pump 702 can draw filtered water by passing through the filter screen 710 to the bottom of the inner wall of the dust collection box 701. A maintenance pipe 703 is fixedly connected to the rear end of the upper surface of the dust collection box 701 away from the air outlet pipe 712, so as to facilitate the maintenance of the water tank.

[0023] Reference Figure 1 and Figure 2 The lower end of the outer wall at the rear end of the tank body 1 is provided with a discharge port 8, so that the screened raw materials can be discharged. The front end of the tank body 1 is fixedly connected to a feeding hopper 2, the lower end of the tank body 1 is fixedly connected to a waste hopper 4, and the lower edge of the tank body 1 is fixedly connected to a support frame 3. The feeding hopper 2 facilitates the conveying of raw materials, and the support frame 3 makes the cylindrical screen more stable.

[0024] Working Principle: Before using this equipment, an external power supply is required. During operation, raw materials are poured into the feeding hopper 2, then enter the second screen cylinder 607. The drive motor 501 drives the second bevel gear 510, which in turn drives the meshing first bevel gear 509. The first bevel gear 509 drives the rotating rod 503, which in turn drives the first gear 507. The first gear 507 then drives the meshing gear ring 506. Through the engagement of the limiting concave ring 504 and the limiting ring 505, both the first and second screen cylinders 606 are simultaneously driven, thus removing impurities from the raw materials. Heavier impurities flow out through the waste hopper 4, and the processed rice flows out from the discharge port 8. Dust generated during processing is drawn into the air intake frame 704 by the fan blades 709 driven by the third motor 708. Then, the water pump 70... 2. Water inside the dust collection box 701 is atomized and sprayed out through the first water pipe 705 and the second water pipe 706, thereby increasing the weight of the dust particles and causing the dust to remain in the dust collection box 701. The wastewater is then filtered through the filter screen 710, allowing the water to be recycled. When it is necessary to adjust the aperture of the cylindrical screen, the self-locking motor 611 drives the second gear 610, which in turn drives the meshing toothed plate 603. The toothed plate 603 then drives the fixed rod 605, which in turn moves within the limiting groove 601 via the second limiting block 608, thereby adjusting the position of the second screen cylinder 607 and thus the size of the screening holes. The second screen cylinder 607 is equipped with a guide spiral belt to control the flow direction of the raw materials. The maintenance pipe 703 facilitates the maintenance of the interior of the dust collection box 701.

[0025] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0026] 2. Where there is no conflict, the embodiments of this disclosure and the features thereof can be combined with each other to obtain new embodiments. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in this utility model shall be understood by those skilled in the art based on the specific circumstances. In addition, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation on this utility model; the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular rice purification cylindrical sieve with adjustable aperture, comprising a tank (1), characterized in that: The tank (1) is provided with an adjustment mechanism (6). The adjustment mechanism (6) includes a first screen cylinder (606) provided inside the tank (1). A second screen cylinder (607) is provided inside the first screen cylinder (606). A second support plate (604) is fixedly connected to the outer wall of the rear end of the second screen cylinder (607). A first support plate (602) is fixedly connected to the outer wall of the rear end of the first screen cylinder (606). A fixed rod (605) is slidably connected to the body of the first support plate (602). A toothed plate (603) is fixedly connected to the rear end of the fixed rod (605). Multiple second limiting blocks (608) are fixedly connected to the front end and the rear end of the body of the second screen cylinder (607). Multiple limiting grooves (601) are opened at the front end and the rear end of the body of the first screen cylinder (606). The adjustment mechanism (6) also includes a self-locking motor (611) provided on the inner wall of the rear end of the tank (1). A second gear (610) is fixedly connected to the output end of the self-locking motor (611). A dust suppression mechanism (7) is provided on one side of the tank body (1). The dust suppression mechanism (7) includes a dust collection box (701) provided on one side of the outer wall of the tank body (1). An air inlet frame (704) is connected through the upper end of the dust collection box (701). A water pump (702) is provided in the middle of the rear end of the upper surface of the dust collection box (701). A first water pipe (705) is fixedly connected to the output end of the water pump (702). A second water pipe (706) is fixedly connected to the end of the first water pipe (705) away from the water pump (702). Multiple nozzles (707) are fixedly connected to the body of the second water pipe (706). An air outlet pipe (712) is fixedly connected to one side of the rear end of the upper surface of the dust collection box (701). A third motor (708) is provided inside the air outlet pipe (712). A fan blade (709) is fixedly connected to the output end of the third motor (708).

2. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: A screening mechanism (5) is provided on the other side of the tank body (1). The screening mechanism (5) includes a first limiting block (508) fixedly connected to the front and rear ends of the outer wall of the other side of the tank body (1). A rotating rod (503) is rotatably connected to the body of the first limiting block (508). A first gear (507) is fixedly connected to both ends of the rotating rod (503). A first bevel gear (509) is fixedly connected to the middle of the rotating rod (503). The screening mechanism (5) also includes a first fixing plate (502) fixedly connected to one side of the tank body (1). A drive motor (501) is fixedly connected to the upper surface of the first fixing plate (502). The output end of 1) is fixedly connected to a second bevel gear (510). The sieving mechanism (5) also includes a gear ring (506), a limiting concave ring (504), and a limiting ring (505). The limiting concave ring (504) is fixedly connected to the front end and the rear end of the inner wall of the tank (1). The limiting ring (505) is fixedly connected to both sides of the cylinder body of the first screen cylinder (606) near the middle. The gear ring (506) is fixedly connected to the front end and the rear end of the cylinder body of the first screen cylinder (606). The limiting ring (505) rotates inside the limiting concave ring (504). The gear ring (506) meshes with the first gear (507). The second bevel gear (510) meshes with the first bevel gear (509).

3. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: The rear end of the inner wall of the tank (1) is fixedly connected to a second fixing plate (609). The self-locking motor (611) is fixedly connected to the upper surface of the second fixing plate (609). The rod body of the fixing rod (605) is rotatably connected to the second support plate (604). The blocks of the second limiting block (608) slide inside the limiting groove (601). The plate body of the toothed plate (603) slides at the rear end of the tank (1). The second gear (610) meshes with the toothed plate (603).

4. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: The second screen cylinder (607) is limited and slids inside the first screen cylinder (606) by the second limiting block (608).

5. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: The end of the air inlet frame (704) away from the dust collection box (701) is connected to the tank body (1). A filter screen (710) is fixedly connected to the middle of the inner wall of the dust collection box (701). A fixing frame (711) is fixedly connected to the inner wall of the air outlet pipe (712). The third motor (708) is fixedly connected to the middle of the fixing frame (711). The input end of the water pump (702) passes through the filter screen (710) to the inner bottom of the dust collection box (701).

6. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: A maintenance pipe (703) is fixedly connected to the rear end of the upper surface of the dust collection box (701) away from the air outlet pipe (712).

7. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: The lower end of the outer wall of the rear end of the tank (1) is provided with a discharge port (8).

8. The modular rice purification cylindrical sieve with adjustable aperture according to claim 1, characterized in that: The front end of the tank (1) is fixedly connected to a feeding hopper (2), the lower end of the tank body (1) is fixedly connected to a waste hopper (4), and the edge of the lower end of the tank body (1) is fixedly connected to a support frame (3).

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