Rice screening machine

Abstract

The utility model relates to the technical field of rice processing, in particular to a rice screening machine which is used for screening rice and sundries, the rice screening machine comprises a rack, a feeding mechanism, a screening mechanism, a driving mechanism and an air supply mechanism, the feeding mechanism is installed on the rack and provided with a discharging port, the screening mechanism comprises a suspension arm and a screening hopper, and the driving mechanism is installed on the rack and provided with a discharging port. The number of the suspension arms is multiple, the two ends of each suspension arm are rotationally connected with the rack and the screening hopper correspondingly, and the screening hopper is provided with a screening space, a screening groove, a distributing space, an air outlet, a material passing opening, a sundry opening and a discharging opening. According to the rice screening machine, the mode that the swinging screening hopper is matched with the air supply mechanism is adopted, air supply to the material passing opening through the air supply mechanism when rice is tiled is controlled easily, impurity removal and separation are conducted on the rice and impurities according to the quality, and therefore the rice and the impurities are effectively separated; the purpose of improving the impurity removal and separation effects of the rice screening machine is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice screening machine. Background Art

[0002] A rice screening machine is a device used to remove and separate impurities mixed in rice. In traditional technologies, the rice screening machine controls the continuous bouncing and flipping of rice on a sieve mesh, and uses the sieve holes of the sieve mesh to enable impurities with a volume smaller than the smaller sieve holes to pass through the sieve holes and separate from the rice. However, for impurities with the same or larger volume, the method of screening rice using a sieve mesh is difficult to achieve the effect of impurity removal and separation, and there is a technical problem that the impurity removal and separation effect of the rice screening machine is not good. Content of the Utility Model

[0003] Based on this, in view of the technical problem that for impurities with the same or larger volume, the method of screening rice using a sieve mesh is difficult to achieve the effect of impurity removal and separation, and there is a poor impurity removal and separation effect of the rice screening machine, it is necessary to provide a rice screening machine.

[0004] A rice screening machine for screening rice and impurities, the rice screening machine includes: a frame, a feeding mechanism, a screening mechanism, a driving mechanism and a blowing mechanism. The feeding mechanism is installed on the frame and is provided with a discharge port. The screening mechanism includes a suspension arm and a screening hopper. The number of the suspension arms is multiple, and both ends of each suspension arm are respectively rotationally connected to the frame and the screening hopper. The screening hopper is provided with a screening space, a screening groove, a material distribution space, an air outlet, a material passing port, a miscellaneous material port and a discharging port. The screening space is communicated with the discharge port, the screening groove is communicated with the screening space, the screening space is communicated with the air outlet, the material passing port and the miscellaneous material port, and the air outlet and the material passing port are oppositely arranged. The discharging port is communicated with the material passing port. The driving mechanism drives the screening hopper to swing, and the blowing mechanism is connected to the screening hopper and is used to blow air through the air outlet towards the material passing port.

[0005] For the above-mentioned rice screening machine, control the rice to fall into the screening hopper through the discharge port of the feeding mechanism, use the driving mechanism to drive the screening hopper to swing relative to the frame under the traction of the suspension arm, so that the rice moves flatly in the screening space towards the direction of the screening groove, falls into the material distribution space through the screening groove, and passes through the air outlet and the material passing port. Under the blowing of the blowing mechanism, the rice with a lighter mass passes through the material passing port and falls into the discharging port and is discharged from the discharging port, and the rice with a heavier mass is directly discharged from the miscellaneous material port, realizing the impurity removal and separation of the rice. Through the above design, the cooperation mode of the swinging screening hopper and the blowing mechanism is adopted, which is beneficial to controlling the flat passing of the rice through the blowing of the blowing mechanism towards the material passing port, so as to remove impurities and separate the rice and impurities by mass, thereby effectively separating the rice and impurities and achieving the purpose of improving the impurity removal and separation effect of the rice screening machine.

[0006] In one embodiment, the feeding mechanism includes a material pipe, a partition plate and a thorn wheel. The material pipe is provided with the discharge port. The partition plate is installed in the material pipe and is provided with a screening port communicating with the discharge port. The thorn wheel is rotatably arranged in the screening port, and the driving mechanism drives the thorn wheel to rotate.

[0007] In one embodiment, the driving mechanism includes a rotary driving member, a transmission rod, a driven rod, an eccentric wheel and a swing arm. The rotary driving member drives the transmission rod to rotate. The transmission rod is coaxially connected with the thorn wheel. The driven rod is in transmission connection with the transmission rod. The eccentric wheel is installed on the transmission rod. One end of the swing arm is rotatably connected with the eccentric wheel, and the other end of the swing arm is rotatably connected with the screening hopper.

[0008] In one embodiment, the feeding mechanism further includes a hopper. The hopper is connected to one end of the material pipe away from the discharge port, and the hopper gradually expands in a direction away from the material pipe.

[0009] In one embodiment, the screening hopper has an arc-shaped surface, and the arc-shaped surface gradually contracts towards the material passing port.

[0010] In one embodiment, the machine frame includes a mounting plate and a support frame. The mounting plate is connected to the feeding mechanism, and the support frame is rotatably connected to the lifting arm.

[0011] In one embodiment, the air supply mechanism includes an air supply driving member, an air hood and an air wheel. The air supply driving member is connected to the air hood and drives the air wheel to rotate. The air hood is connected to the screening hopper and is provided with an air duct communicating with the air outlet. The air wheel is rotatably arranged in the air duct.

[0012] In one embodiment, the discharge port gradually contracts towards the screening hopper. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the paddy screening machine shown in the present utility model;

[0014] Figure 2 is Figure 1 a schematic cross-sectional structural diagram of the paddy screening machine shown;

[0015] Figure 3 is Figure 2 an enlarged schematic view of part A of the paddy screening machine shown.

[0016] The meanings of the reference numerals in the drawings are as follows:

[0017] 100, paddy screening machine;

[0018] 10. Frame; 11. Mounting plate; 12. Support frame;

[0019] 20. Loading mechanism; 21. Material pipe; 211. Discharge port; 22. Partition board; 23. Ratchet wheel; 24. Hopper;

[0020] 30. Screening mechanism; 31. Boom; 32. Screening hopper; 321. Screening space; 322. Screening groove; 323. Material distribution space; 324. Air outlet; 325. Feeding port; 326. Miscellaneous material port; 327. Discharge port; 328. Arc surface;

[0021] 40. Driving mechanism; 41. Rotary driving member; 42. Transmission rod; 43. Driven rod; 44. Eccentric wheel; 45. Swing arm;

[0022] 50. Air supply mechanism; 51. Air supply driving member; 52. Air hood; 521. Air duct; 53. Wind wheel. Detailed implementation manner

[0023] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manner of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0029] As Figure 1 shown, it is the rice screening machine 100 shown in the present utility model, which is used for screening rice and sundries.

[0030] As Figures 1 to 2 shown, the rice screening machine 100 includes: a frame 10, a feeding mechanism 20, a screening mechanism 30, a driving mechanism 40 and a blowing mechanism 50. Among them, the frame 10 is used for installing the feeding mechanism 20, the screening mechanism 30 and the driving mechanism 40. The feeding mechanism 20 is used for receiving the mixture of rice and sundries and conveying it onto the screening mechanism 30. The screening mechanism 30 is movably connected to the frame 10. The driving mechanism 40 is used for driving the screening mechanism 30 to move so as to control the screening of the mixture of rice and sundries on the screening mechanism 30 through the blowing mechanism 50. The blowing mechanism 50 is connected to the screening mechanism 30 and is used for separating sundries with different masses from the rice by using wind power, and removing impurities and separating the rice and sundries by mass, so as to effectively separate the rice and sundries and achieve the purpose of improving the impurity removal and separation effects of the rice screening machine 100

[0031] In the following, in combination with Figures 1 to 3 , the above-mentioned rice screening machine 100 will be further described.

[0032] As Figure 1 shown, the frame 10 includes a mounting plate 11 and a support frame 12. The mounting plate 11 is connected to the feeding mechanism 20, and the support frame 12 is connected to the screening mechanism 30 and the driving mechanism 40, so that the screening mechanism 30 is located below the feeding mechanism 20, and the gravity is used to guide the rice and sundries to enter the screening mechanism 30 through the feeding mechanism 20.

[0033] As Figure 2 shown, the feeding mechanism 20 is mounted on the mounting plate 11 of the frame 10. Specifically, the feeding mechanism 20 includes a material pipe 21, a partition plate 22 and a thorn wheel 23. The material pipe 21 is provided with a discharge port 211, and the discharge port 211 gradually contracts towards the screening mechanism 30. The partition plate 22 is installed in the material pipe 21 and is provided with a screening port communicating with the discharge port 211. The thorn wheel 23 is rotatably arranged in the screening port, and the driving mechanism 40 drives the thorn wheel 23 to rotate to prevent the rice and sundries from accumulating at the screening port.

[0034] Furthermore, as Figure 2 shown, the feeding mechanism 20 also has a hopper 24. The hopper 24 is connected to one end of the material pipe 21 away from the discharge port 211, and the hopper 24 gradually expands towards the direction away from the material pipe 21 to facilitate the reception of rice and sundries.

[0035] As Figure 1 shown, the screening mechanism 30 includes a suspension arm 31 and a screening hopper 32. The number of suspension arms 31 is multiple, and both ends of each suspension arm 31 are respectively rotatably connected to the frame 10 and the screening hopper 32, so that the screening hopper 32 can swing relative to the support frame 12 of the frame 10 through the suspension arm 31. As Figure 2 and Figure 3 shown, the screening hopper 32 is provided with a screening space 321, a screening groove 322, a material distribution space 323, an air outlet 324, a material passing port 325, a sundries port 326 and a discharge port 327. The screening space 321 is communicated with the discharge port 211 and is used to receive the rice and sundries mixture. The screening groove 322 is communicated with the screening space 321 and is used for the rice and sundries mixture to pass through. The screening space 321 is communicated with the air outlet 324, the material passing port 325 and the sundries port 326. The air outlet 324 is used for the air source provided by the air supply mechanism 50 to pass through. The material passing port 325 is used to receive the rice blown in by the wind. The sundries port 326 is used for the sundries to flow out, and the air outlet 324 and the material passing port 325 are oppositely arranged, so that the wind generated by the air supply mechanism 50 can better separate the rice and sundries mixture. The discharge port 327 is communicated with the material passing port 325 and is used for the rice at the material passing port 325 to flow out.

[0036] As Figures 1 to 2As shown, the driving mechanism 40 drives the sieve hopper 32 to swing. The air supply mechanism 50 is connected to the sieve hopper 32 and is used to supply air to the material passing port 325 through the air outlet 324. Among them, the driving mechanism 40 includes a rotary driving member 41, a transmission rod 42, a driven rod 43, an eccentric wheel 44 and a swing arm 45. The rotary driving member 41 is a motor and drives the transmission rod 42 to rotate. The transmission rod 42 is coaxially connected to the ratchet wheel 23. The driven rod 43 is in transmission connection with the transmission rod 42. The eccentric wheel 44 is installed on the transmission rod 42. One end of the swing arm 45 is rotatably connected to the eccentric wheel 44, and the other end of the swing arm 45 is rotatably connected to the sieve hopper 32.

[0037] Furthermore, as Figure 3 shown, the sieve hopper 32 has an arc surface 328, and the arc surface 328 gradually contracts towards the direction of the material passing port 325. The arc surface 328 can effectively guide the paddy into the material passing port 325.

[0038] As Figure 1 shown, the air supply mechanism 50 includes an air supply driving member 51, an air hood 52 and an air wheel 53. The air supply driving member 51 is a motor, is connected to the air hood 52 and drives the air wheel 53 to rotate. The air hood 52 is connected to the sieve hopper 32 and is provided with an air duct 521 communicating with the air outlet 324. The air wheel 53 is rotatably arranged in the air duct 521.

[0039] The usage method of the paddy screening machine 100 shown in the present utility model is as follows: Control the paddy to fall into the sieve hopper 32 through the discharge port 211 of the feeding mechanism 20. Use the driving mechanism 40 to drive the sieve hopper 32 to swing relative to the machine frame 10 under the traction of the suspension arm 31, so that the paddy moves flatly in the screening space 321 towards the direction of the screening groove 322, falls into the material distribution space 323 through the screening groove 322, and passes through the air outlet 324 and the material passing port 325. Under the blowing of the air supply mechanism 50, the paddy with lighter quality falls into the discharge port 327 through the material passing port 325 and is discharged from the discharge port 327, and the paddy with heavier quality is directly discharged from the miscellaneous material port 326, realizing the impurity removal and separation of the paddy.

[0040] The beneficial effect of the paddy screening machine 100 shown in the present utility model is as follows: By adopting the cooperation mode of the swinging sieve hopper 32 and the air supply mechanism 50, it is beneficial to control the air supply of the paddy passing flatly through the air supply mechanism 50 to the material passing port 325, so as to remove impurities and separate the paddy and sundries by quality, thereby effectively separating the paddy and sundries and achieving the purpose of improving the impurity removal and separation effect of the paddy screening machine 100.

[0041] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0042] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A rice screening machine, characterized in that: include: A frame, a feeding mechanism, a screening mechanism, a driving mechanism and an air supply mechanism, the feeding mechanism is installed on the frame and is provided with a discharge port, the screening mechanism includes a suspension arm and a screening bucket, the number of the suspension arms is multiple, and the two ends of each suspension arm are rotatably connected to the frame and the screening bucket respectively, the screening bucket is provided with a screening space, a screening trough, a material distribution space, an air outlet, a feeding port, a miscellaneous material port and a discharge port, the screening space is communicated with the discharge port, the screening trough is communicated with the screening space, the screening space is communicated with the air outlet, the feeding port and the miscellaneous material port, and the air outlet is arranged opposite to the feeding port, the discharge port is communicated with the feeding port, the driving mechanism drives the screening bucket to swing, the air supply mechanism is connected with the screening bucket, and is used to supply air to the feeding port through the air outlet.

2. The rice screening machine according to claim 1, characterized in that: The feeding mechanism includes a material pipe, a partition and a wheel. The material pipe is provided with the discharge port. The partition is installed in the material pipe and is provided with a screening port connected to the discharge port. The wheel is rotatably arranged in the screening port, and the driving mechanism drives the wheel to rotate.

3. The rice screening machine according to claim 2, characterized in that: The driving mechanism includes a rotating driving member, a transmission rod, a driven rod, an eccentric wheel and a swing arm. The rotating driving member drives the transmission rod to rotate. The transmission rod is coaxially connected to the eccentric wheel. The driven rod is transmission-connected to the transmission rod. The eccentric wheel is installed on the transmission rod. One end of the swing arm is rotationally connected to the eccentric wheel, and the other end of the swing arm is rotationally connected to the screen bucket.

4. The rice screening machine according to claim 2, characterized in that: The feeding mechanism further comprises a hopper, which is connected to an end of the material pipe away from the discharge port, and the hopper gradually expands in a direction away from the material pipe.

5. The rice screening machine according to claim 1, characterized in that: The sieve bucket has an arc-shaped surface, and the arc-shaped surface gradually shrinks toward the feeding port.

6. The rice screening machine according to claim 1, characterized in that: The frame comprises a mounting plate and a supporting frame, wherein the mounting plate is connected to the feeding mechanism, and the supporting frame is rotatably connected to the boom.

7. The rice screening machine according to claim 1, characterized in that: The air supply mechanism includes an air supply driving member, an air cover and a wind wheel. The air supply driving member is connected to the wind cover and drives the wind wheel to rotate. The wind cover is connected to the screen bucket and is provided with an air duct connected to the air outlet. The wind wheel is rotatably arranged in the air duct.

8. The rice screening machine according to claim 1, characterized in that: The discharge port gradually shrinks toward the screen bucket.

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