Rice primary screening device

Abstract

The utility model discloses a rice primary screening device, belongs to the technical field of rice processing, and aims to solve the problems that in the prior art, when rice is in contact with a screen, the rice is easy to accumulate, so that the screening efficiency is reduced, the internal screen can be taken out only by opening the primary screening device after screening, and the screen is inconvenient to clean. Comprising a screening box, an outer frame, a driving mechanism and a feeding hopper, the feeding hopper is arranged above the screening box and communicates with the screening box, a splitter plate is fixedly installed in the feeding hopper, the splitter plate is of an inverted-V-shaped structure and extends into the screening box from the feeding hopper, and a discharging opening is formed in the side wall of the screening box; a movable outer frame is horizontally installed in the screening box and is of a hollow structure, and a screen is installed in the outer frame in a sliding mode. According to the rice primary screening device, rice can be rapidly shunted after entering the feeding hopper, the rice making contact with the shunting plate is shunted into two parts to flow towards the screen, then the rice can be prevented from being stacked in the feeding process, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rice processing, and particularly relates to a rice primary screening device. Background Art

[0002] Rice processing and screening is a complex and delicate process involving multiple steps and links. First, impurities in rice, such as stones, soil, weed seeds, etc., are removed to improve the purity of rice. Then, the white rice is graded using a white rice grading screen and classified according to characteristics such as size and shape. This helps to extract by-products such as broken rice that do not meet the requirements to ensure the quality and taste of the final product. During the initial screening of rice, large particles of impurities in the rice need to be screened out. When the rice is screened, the rice enters the feed port of the screening equipment and the flow is relatively concentrated. Therefore, when the rice contacts the screen, it is easy to accumulate, resulting in reduced screening efficiency. After screening, the primary screening device needs to be opened to remove the internal screen, which is not convenient for cleaning the screen. Therefore, the inventor proposed a rice primary screening device. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rice primary screening device, which aims to solve the problems in the existing technology that rice is easily accumulated when it contacts the screen, resulting in reduced screening efficiency, and after screening, the primary screening device needs to be opened to remove the internal screen, which is not convenient for cleaning the screen.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the present invention provides a rice primary screening device, comprising a screening box, an outer frame, a driving mechanism and a feed hopper, wherein the feed hopper is arranged above the screening box and is connected to the screening box, a diverter plate is fixedly installed inside the feed hopper, the diverter plate is in an inverted V-shaped structure, extends from the feed hopper into the screening box, and a discharge port is provided on the side wall of the screening box; a movable outer frame is horizontally installed inside the screening box, the outer frame is a hollow structure, a screen is slidably installed inside the outer frame, and the screen is arranged horizontally to close the outer frame; the driving mechanism is arranged on the side wall of the screening box, the driving mechanism comprises a fixed rod, a driving screw and a driving motor, the fixed rod is arranged horizontally, and the driving screw is rotatably installed inside the fixed rod. Thanks to the arrangement of the diverter plate, the rice can be quickly diverted after entering the feed hopper, and the rice in contact with the diverter plate is diverted into two parts and flows toward the screen, thereby avoiding the accumulation of rice feed and improving the screening efficiency.

[0007] Preferably, the interior of the fixing rod is a hollow structure, and the driving motor is fixedly installed on one side of the fixing rod, and the driving motor is connected to the driving screw.

[0008] Preferably, a through hole is formed on a side of the fixing rod away from the driving motor.

[0009] Preferably, an opening for the outer frame to slide into is formed on the side wall of the screening box, an end of the outer frame extends out of the opening, and a driving rod is fixed to the side wall at one end extending out.

[0010] Preferably, a threaded hole is provided inside the driving rod, and the driving rod is threadably matched with the driving screw.

[0011] Preferably, the interior of the outer frame is provided with an inner slide groove for movably installing the screen, and a drive box is fixedly installed on the side wall of the outer frame.

[0012] Preferably, a telescopic cylinder is horizontally installed inside the driving box, and the telescopic end of the telescopic cylinder is fixedly connected to the outer wall of the screen.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] Thanks to the setting of the diverter plate, the utility model can quickly divert the rice after it enters the feed hopper. The rice in contact with the diverter plate is diverted into two parts and flows toward the screen, thereby avoiding the accumulation of rice feed and improving the screening efficiency. During the powder flashing process, the telescopic cylinder is started to drive the screen to slide continuously along the inner slide groove, which can accelerate the flow and further improve the screening efficiency. After the rice screening is completed, the outer frame can be driven out of the interior of the screening box as a whole through the cooperation of the driving mechanism and the driving rod, and the screen also slides accordingly. When the outer frame completely brings the screen out of the screening box, the impurities remaining on the surface of the screen can be cleaned, which makes it convenient to clean the impurities remaining on the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the outer frame and screen being separated;

[0019] Figure 3 Schematic diagram of the driving mechanism structure;

[0020] Figure 4 This is a structural diagram of the manifold installation status.

[0021] The markings in the accompanying drawings are: 1. screening box; 2. discharge port; 3. drive box; 4. outer frame; 5. drive rod; 6. drive mechanism; 7. drive motor; 8. feed hopper; 9. diverter plate; 10. screen; 11. telescopic cylinder; 12. inner slide; 13. perforation; 14. drive screw; 15. fixing rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] This specific embodiment is a rice primary screening device, and its structural diagram is as follows Figure 1 、 Figure 4 As shown, it includes a screening box 1, an outer frame 4, a driving mechanism 6 and a feed hopper 8. The feed hopper 8 is arranged above the screening box 1 and is connected to the screening box 1. A diverter plate 9 is fixedly installed inside the feed hopper 8. The diverter plate 9 is an inverted V-shaped structure and extends from the feed hopper 8 into the screening box 1. A discharge port 2 is provided on the side wall of the screening box 1.

[0024] Reference Figure 2 The screening box 1 has a movable outer frame 4 installed horizontally inside. The outer frame 4 has a hollow structure, and a screen 10 is slidably installed inside the outer frame 4. The screen 10 is arranged horizontally to close the outer frame 4. The side wall of the screening box 1 has an opening for the outer frame 4 to slide into. The end of the outer frame 4 extends out of the opening, and a drive rod 5 is fixed to the side wall at one end. The drive rod 5 has a threaded hole inside, and the drive rod 5 is threadedly adapted to the drive screw 14. The inner part of the outer frame 4 has an inner slide 12 for the movable installation of the screen 10. The side wall of the outer frame 4 has a drive box 3 fixedly installed. The inner part of the drive box 3 has a telescopic cylinder 11 installed horizontally, and the telescopic end of the telescopic cylinder 11 is fixedly connected to the outer wall of the screen 10.

[0025] Reference Figure 3The drive mechanism 6 is disposed on the side wall of the screening box 1 and includes a fixed rod 15, a drive screw 14, and a drive motor 7. The fixed rod 15 is disposed horizontally, and the drive screw 14 is rotatably mounted inside the fixed rod 15. The interior of the fixed rod 15 is a hollow structure, and the drive motor 7 is fixedly mounted on one side of the fixed rod 15 and connected to the drive screw 14. A through hole 13 is formed on the side of the fixed rod 15 away from the drive motor 7.

[0026] Working principle: When in use, first pour the unscreened rice from the feed hopper 8 into the screening box 1. The rice enters the feed hopper 8 and contacts the diverter plate 9. It is diverted into two parts and flows toward the screen 10. After the rice and the impurities are attached to the screen 10, the rice continues to flow downward through the screen 10 and is discharged from the discharge port 2. The impurities are intercepted on the screen 10. Then the telescopic cylinder 11 is started. As the telescopic cylinder 11 is continuously extended and retracted, the screen 10 is forced to slide continuously inside the outer frame 4. After the rice and the impurities contact the screen 10, the screen 10 is continuously shaken, which can accelerate the flow and thus improve the screening efficiency. After the screening is completed, the motor (7) is driven. When started, the driving screw 14 is driven to rotate, and the driving rod 5 threadedly connected to the driving screw 14 is forced to move, and continuously slides out from the inside of the fixed rod 15 along the through-hole 13, and then the outer frame 4 slides out from the inside of the screening box 1 as a whole, and the screen 10 also slides along it. When the outer frame 4 completely brings the screen 10 out of the screening box 1, the impurities remaining on the surface of the screen 10 can be cleaned; through the cooperation of the driving mechanism 6 and the driving rod 5, the outer frame 4 can be driven to move out of the inside of the screening box 1 as a whole, and the screen 10 also slides along it. When the outer frame 4 completely brings the screen 10 out of the screening box 1, the impurities remaining on the surface of the screen 10 can be cleaned, which makes it convenient to clean the residual impurities on the screen 10.

[0027] After cleaning is completed, the driving screw 14 can be started in the reverse direction, and the driving rod 5 is forced to slide toward the inside of the fixed rod 15, which can drive the outer frame 4 to slide toward the inside of the screening box 1 again, and the rice can be continued to be screened.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rice primary screening device, comprising a screening box (1), an outer frame (4), a driving mechanism (6) and a feed hopper (8), characterized in that: The feed hopper (8) is arranged above the screening box (1), the feed hopper (8) is communicated with the screening box (1), a diverter plate (9) is fixedly installed inside the feed hopper (8), the diverter plate (9) is an inverted V-shaped structure, and extends from the feed hopper (8) into the screening box (1), and a discharge port (2) is opened on the side wall of the screening box (1); A movable outer frame (4) is horizontally installed inside the screening box (1), the outer frame (4) is a hollow structure, a screen (10) is slidably installed inside the outer frame (4), and the screen (10) is horizontally arranged to seal the outer frame (4); The driving mechanism (6) is arranged on the side wall of the screening box (1), and comprises a fixing rod (15), a driving screw rod (14) and a driving motor (7). The fixing rod (15) is arranged horizontally, and the driving screw rod (14) is rotatably installed inside the fixing rod (15).

2. A rice primary screening device according to claim 1, characterized in that: The interior of the fixing rod (15) is a hollow structure, and the driving motor (7) is fixedly mounted on one side of the fixing rod (15), and the driving motor (7) is connected to the driving screw (14).

3. A rice primary screening device according to claim 2, characterized in that: A through hole (13) is provided on a side of the fixing rod (15) away from the driving motor (7).

4. A rice primary screening device according to claim 1, characterized in that: An opening for the outer frame (4) to slide into is provided on the side wall of the screening box (1), an end of the outer frame (4) extends out of the opening, and a driving rod (5) is fixed to the side wall of the extended end.

5. A rice primary screening device according to claim 4, characterized in that: A threaded hole is provided inside the driving rod (5), and the driving rod (5) is threadably matched with the driving screw rod (14).

6. A rice primary screening device according to claim 1, characterized in that: The interior of the outer frame (4) is provided with an inner slide groove (12) for movably installing the screen (10), and a drive box (3) is fixedly installed on the side wall of the outer frame (4).

7. A rice primary screening device according to claim 6, characterized in that: A telescopic cylinder (11) is horizontally installed inside the driving box (3), and the telescopic end of the telescopic cylinder (11) is fixedly connected to the outer wall of the screen (10).

Images