Multistage screening device for rice husks

Abstract

The utility model belongs to the technical field of rice hull multi-stage screening, and particularly relates to a rice hull multi-stage screening device which comprises a supporting frame, a cylinder is installed on the supporting frame and arranged to be in an inclined state, a feeding port is formed in the top side of the cylinder, a material guide pipe is installed at the position, located at the feeding port, of the top side of the cylinder, and a material outlet is formed in the top side of the cylinder. A cylinder body is installed on the material guiding pipe, a heating plate is assembled in the containing groove, a threaded plate is installed on the inner wall of the cylinder body, a material pushing plate is rotatably installed on the side wall of the barrel through a rotating shaft, rice falls onto the threaded plate and then slides down along the threaded plate, the threaded plate heats and dries the rice, and the rice is dried through the material pushing plate; according to the device, wet rice husks are heated and dried, then the rice slides into the barrel, the pushing plate rotates at a high speed, the pushing plate stirs the rice at a high speed, the dried rice husks and rice grains are rapidly and thoroughly separated, efficient stripping of the rice husks is achieved, thorough screening of the rice husks is facilitated, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-stage screening of rice husks, in particular to a multi-stage screening device for rice husks. Background Art

[0002] Rice is a kind of herbaceous rice, which belongs to cereal and is also the most important and oldest kind of food in the rice genus. After the rice is harvested, it needs to be dried and then screened. During the screening process, a multi-stage screening device needs to be used.

[0003] A Chinese patent with publication number CN209156426U discloses a novel multi-stage screening device for rice, including a screening bin, wherein the four corners of the bottom of the screening bin are all provided with legs, and a debris discharge port is provided on one side of the bottom of the screening bin, a raw material outlet is provided at the middle position of the bottom of the screening bin, and a feed hopper is provided at the top of the screening bin near the debris discharge port, a third chute is provided on the side of the feed hopper near the screening bin, and a baffle is provided inside the third chute, and a negative pressure fan is provided at the middle position of the top of the screening bin. The utility model is equipped with a first screen and a second screen, and fine impurities in rice seeds can be screened through the first screen, and medium-sized impurities in rice can be screened through the second screen, and it is used in conjunction with an air blower to use airflow to perform a third screening of large particle impurities and rice, thereby increasing the screening effect of the device and improving the practicality of the device.

[0004] The existing multi-stage screening device cannot efficiently peel the rice husk from the rice during the screening process of the rice husk, resulting in low screening efficiency. Therefore, a multi-stage screening device for rice husk is proposed to address the above problem. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model provides a rice husk multi-stage screening device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a rice husk multi-stage screening device described in the utility model comprises a support frame, a cylinder body is installed on the support frame, the cylinder body is set in an inclined state, a feed port is provided on the top side of the cylinder body, a material guide pipe is installed on the top side of the cylinder body at the feed port, a cylinder body is installed on the material guide pipe, a feed hopper is installed on the top side of the cylinder body, a placement groove is provided on the side wall of the cylinder body, a heating plate is installed in the placement groove, a threaded plate is installed on the inner wall of the cylinder body, a push plate is installed on the side wall of the cylinder body through a rotating shaft, a first motor is installed on the side wall of the cylinder body through a machine base, A discharge pipe is installed on the bottom side of the cylinder, and four groups of connecting rods are rotatably connected to the support frame through pin shafts. The other side of the four groups of connecting rods is connected to a screening box, and a feed pipe is opened on the top side of the screening box. The feed pipe is located below the discharge pipe. After the rice falls onto the threaded plate, it slides downward along the threaded plate, and the threaded plate heats and dries the rice, so that the wet rice husk is heated and dried, and then the rice slides into the cylinder. The push plate rotates at high speed, and the push plate stirs the rice at high speed, so that the dry rice husk and rice grains are quickly and thoroughly separated, thereby realizing efficient peeling of the rice husk, facilitating thorough screening of the rice husk, and benefiting to improving screening efficiency.

[0007] Preferably, a vibration motor is installed on the support frame through the machine base, the output shaft of the vibration motor is connected to the screening box, an air box is installed on the side wall of the screening box, a fan is installed on the top plate of the air box through the machine base, a driving motor is installed in the fan, the fan is connected to the air box through a duct, a plurality of exhaust holes are provided on the side wall of the air box and the side wall of the screening box, the exhaust holes are arranged in a rectangular array structure, a first screening plate and a second screening plate are installed on one side wall of the screening box, the first screening plate and the second screening plate are arranged obliquely, and the bottom plate of the screening box is inclined In an inclined state, a first discharging hopper is installed on the side wall of the screening box, and a second discharging hopper is installed on the bottom plate of the screening box. Rice husks and rice grains fall onto the first screening plate of the screening box, and the first screening plate drives the rice husks and rice grains to vibrate at a high frequency. The air flow blown out of the exhaust hole blows away the rice husk lightly, while the heavier rice grains will sink on the first screening plate. The rice grains roll from the first screening plate to the second screening plate, and then the rice husks mixed in the rice grains are continuously blown off, thereby realizing multiple screening of rice, which is beneficial to improving the screening effect.

[0008] The utility model is beneficial in that:

[0009] 1. According to the utility model, after the rice falls onto the threaded plate, it slides downward along the threaded plate, which heats and dries the rice, so that the wet rice husk is heated and dried, and then the rice slides into the cylinder body, and the pusher plate rotates at a high speed, and the pusher plate stirs the rice at a high speed, so that the dry rice husk and rice grains are quickly and completely separated, thereby realizing efficient peeling of the rice husk, facilitating the thorough screening of the rice husk, and being beneficial to improving the screening efficiency.

[0010] 2. The utility model allows rice husks and rice grains to fall onto the first screening plate of the screening box, and the first screening plate drives the rice husks and rice grains to vibrate at a high frequency. The airflow blown out of the exhaust hole blows away the rice husk lightly, while the heavier rice grains will sink on the first screening plate. The rice grains roll from the first screening plate to the second screening plate, and then continue to blow off the rice husks mixed in the rice grains, thereby realizing multiple screening of rice, which is beneficial to improving the screening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the cylinder;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the cylinder body;

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the screening box;

[0016] Figure 5 Schematic diagram of the internal three-dimensional structure of the screening box.

[0017] In the figure: 1. support frame; 2. cylinder; 3. feed port; 4. guide pipe; 5. cylinder body; 6. feed hopper; 7. placement slot; 8. heating plate; 9. threaded plate; 10. push plate; 11. first motor; 12. discharge pipe; 13. connecting rod; 14. screening box; 15. feed pipe; 16. vibration motor; 17. air box; 18. fan; 19. exhaust hole; 20. first screening plate; 21. second screening plate; 22. first discharge hopper; 23. second discharge hopper. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 As shown, a rice husk multi-stage screening device comprises a support frame 1, a barrel 2 is mounted on the support frame 1, the barrel 2 is arranged in an inclined state, a feed port 3 is provided on the top side of the barrel 2, a guide pipe 4 is provided on the top side of the barrel 2 at the feed port 3, a cylinder 5 is mounted on the guide pipe 4, a feed hopper 6 is installed on the top side of the cylinder 5, a placement groove 7 is provided on the side wall of the cylinder 5, a heating plate 8 is installed in the placement groove 7, a threaded plate 9 is installed on the inner wall of the cylinder 5, a push plate 10 is rotatably mounted on the side wall of the barrel 2 through a rotating shaft, a first motor 11 is installed on the side wall of the barrel 2 through a machine base, and a bottom side of the barrel 2 is provided with a first motor 12. A discharge pipe 12 is installed, four groups of connecting rods 13 are rotatably connected to the support frame 1 through a pin shaft, and a screening box 14 is connected to the other side of the four groups of connecting rods 13. A feed pipe 15 is opened on the top side of the screening box 14, and the feed pipe 15 is located below the discharge pipe 12. A vibration motor 16 is installed on the support frame 1 through a machine base, and the output shaft of the vibration motor 16 is connected to the screening box 14. An air box 17 is installed on the side wall of the screening box 14, and a fan 18 is installed on the top plate of the air box 17 through the machine base. A driving motor is installed in the fan 18, and the fan 18 is connected to the air box 17 through a conduit. The side wall of the air box 17 and the screening box 14 are connected. A plurality of exhaust holes 19 are provided on the side wall, and the exhaust holes 19 are arranged in a rectangular array structure. A first screening plate 20 and a second screening plate 21 are installed on one side wall of the screening box 14, and the first screening plate 20 and the second screening plate 21 are arranged obliquely, and the bottom plate of the screening box 14 is in an inclined state. A first discharge hopper 22 is installed on the side wall of the screening box 14, and a second discharge hopper 23 is installed on the bottom plate of the screening box 14. When working, the existing multi-stage screening device cannot efficiently peel off the rice husk from the rice during the screening of the rice husk, resulting in low screening efficiency. By pouring the rice into the feed hopper 6 The rice is then fed into the cylinder 5 from the feed hopper 6. The heating plate 8 in the cylinder 5 heats the inner wall of the cylinder 5 and the threaded plate 9. After the rice falls onto the threaded plate 9, it slides down along the threaded plate 9. During the sliding process of the rice on the threaded plate 9, the threaded plate 9 heats and dries the rice, so that the wet rice husk is heated and dried. Then the rice slides into the cylinder 2. The first motor 11 is operated to drive the push plate 10 to rotate at a high speed. The push plate 10 stirs the rice at a high speed, so that the dry rice husk and rice grains are quickly and completely separated, thereby realizing efficient peeling of the rice husk.

[0020] After that, the rice husks and rice grains slide down obliquely along the cylinder 2 into the discharge pipe 12, then fall into the feed pipe 15, and then fall onto the first screening plate 20 of the screening box 14. The vibration motor 16 is operated, and the vibration motor 16 drives the screening box 14 to vibrate at a high frequency, driving the rice husks and rice grains to vibrate at a high frequency. The fan 18 is operated, and the fan 18 introduces air flow into the air box 17. Then the air flow is blown out from the exhaust hole 19. The air flow blown out of the exhaust hole 19 blows away the rice husk lightly, while the heavy The rice grains will sink on the first screening plate 20, and the rice husks will fall onto the bottom plate of the screening box 14, and then be discharged from the second discharging hopper 23 along the slope of the bottom plate. The rice grains roll from the first screening plate 20 to the second screening plate 21, and then the rice husks mixed in the rice grains are blown off, thereby achieving multiple screening of the rice, and then the rice grains are discharged from the first discharging hopper 22. This structure can efficiently peel off the rice husks from the rice, facilitates the thorough screening of the rice husks, and is beneficial to improving the screening efficiency.

[0021] Working principle: the existing multi-stage screening device cannot efficiently peel the rice husk from the rice during the screening process of the rice husk, resulting in low screening efficiency. The rice is poured into the feed hopper 6 and then enters the cylinder body 5 from the feed hopper 6. The heating plate 8 in the cylinder body 5 heats the inner wall of the cylinder body 5 and the threaded plate 9. After the rice falls on the threaded plate 9, it slides down along the threaded plate 9. During the sliding of the rice on the threaded plate 9, the threaded plate 9 heats and dries the rice, so that the wet rice husk is heated and dried. Then the rice slides into the cylinder body 2. The first motor 11 is operated to drive the push plate 10 to rotate at a high speed. The push plate 10 stirs the rice at a high speed, so that the dry rice husk and rice grains are quickly and thoroughly separated, thereby realizing efficient peeling of the rice husk; then the rice husk and rice grains slide obliquely downward along the cylinder body 2 into the discharge pipe 12, and then fall into the feed pipe 15 , and then falls onto the first screening plate 20 of the screening box 14, and is operated by the vibration motor 16, which drives the screening box 14 to vibrate at a high frequency, driving the rice husks and rice grains to vibrate at a high frequency, and is operated by the fan 18, which introduces air flow into the air box 17, and then the air flow is blown out from the exhaust hole 19, and the air flow blown out from the exhaust hole 19 blows the rice husks away lightly, while the heavier rice grains will sink on the first screening plate 20, and the rice husks fall onto the bottom plate of the screening box 14, and then are discharged from the second discharging hopper 23 along the slope of the bottom plate, and the rice grains roll from the first screening plate 20 to the second screening plate 21, and then continue to blow off the rice husks mixed in the rice grains, thereby realizing multiple screening of the rice, and then the rice grains are discharged from the first discharging hopper 22, and this structure can efficiently peel off the rice husks from the rice, which is convenient for thorough screening of the rice husks and is conducive to improving the screening efficiency.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rice husk multi-stage screening device, characterized in that: The invention comprises a support frame (1), a barrel (2) is mounted on the support frame (1), the barrel (2) is arranged in an inclined state, a feed port (3) is provided on the top side of the barrel (2), a guide pipe (4) is installed on the top side of the barrel (2) at the feed port (3), a cylinder (5) is mounted on the guide pipe (4), a feed hopper (6) is installed on the top side of the cylinder (5), a placement groove (7) is provided on the side wall of the cylinder (5), a heating plate (8) is installed in the placement groove (7), and a heating plate (8) is installed on the inner wall of the cylinder (5). A threaded plate (9) is provided, a push plate (10) is rotatably mounted on the side wall of the cylinder (2) via a rotating shaft, a first motor (11) is mounted on the side wall of the cylinder (2) via a machine base, a discharge pipe (12) is installed on the bottom side of the cylinder (2), four groups of connecting rods (13) are rotatably connected to the support frame (1) via a pin shaft, a screening box (14) is connected to the other side of the four groups of connecting rods (13), a feed pipe (15) is provided on the top side of the screening box (14), and the feed pipe (15) is located below the discharge pipe (12).

2. A rice husk multi-stage screening device according to claim 1, characterized in that: A vibration motor (16) is mounted on the support frame (1) via a machine base, and an output shaft of the vibration motor (16) is connected to a screening box (14).

3. A rice husk multi-stage screening device according to claim 2, characterized in that: An air box (17) is installed on the side wall of the screening box (14), a fan (18) is installed on the top plate of the air box (17) through a machine base, a driving motor is installed in the fan (18), and the fan (18) is connected to the air box (17) through a conduit.

4. A rice husk multi-stage screening device according to claim 3, characterized in that: A plurality of groups of exhaust holes (19) are provided on the side walls of the air box (17) and the screening box (14), and the exhaust holes (19) are arranged in a rectangular array structure.

5. The rice husk multi-stage screening device according to claim 3, characterized in that: A first screening plate (20) and a second screening plate (21) are installed on one side wall of the screening box (14), and the first screening plate (20) and the second screening plate (21) are arranged obliquely.

6. The rice husk multi-stage screening device according to claim 2, characterized in that: The bottom plate of the screening box (14) is in an inclined state, a first discharge hopper (22) is installed on the side wall of the screening box (14), and a second discharge hopper (23) is installed on the bottom plate of the screening box (14).

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