Screening device for grain processing

Abstract

This utility model belongs to the field of grain screening technology, specifically a screening device for grain processing. It includes a screening box, with fixed protrusions fixed to the inner wall of the screening box, and multiple fixed protrusions arranged correspondingly. A fixed protrusion is also provided at the top of each fixed protrusion. A screening tray is disposed inside the screening box. A limiting platform is fixed to the bottom of the screening tray. A connecting shaft is fixed to the inner wall of the screening tray. An inclined screen is fixed to the inner wall of the screening tray. A vibrating motor is fixed to the side wall of the screening tray. A discharge hopper is fixed to the side wall of the screening tray. This utility model performs two screenings of the grain using two screening trays, thereby distinguishing grains of different sizes. Simultaneously, the inclined state of the inclined screen allows grains remaining at the top of the inclined screen to be discharged from the device under the influence of vibration, facilitating automated two-stage grain screening.

Description

Technical Field

[0001] This utility model belongs to the field of grain screening technology, specifically a screening device for grain processing. Background Technology

[0002] Grains are a general term for food crops, mainly composed of grasses, including rice, wheat, millet, and soybeans. Grains can be divided into refined grains and whole grains. Whole grains retain the nutritional components of the whole grain and are rich in dietary fiber, B vitamins, and minerals, which are beneficial to health. Increasing the intake of whole grains can help with weight management and reduce the risk of chronic diseases.

[0003] Existing grain processing screening devices mostly use screens to achieve the screening effect. If multi-stage screening is required, multiple screens with different apertures are set. However, small impurities in grains are difficult to remove in this way. These impurities will eventually remain in the smallest grain particles, requiring secondary washing, which is inconvenient.

[0004] Therefore, this utility model provides a screening device for grain processing. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The grain processing screening device of this utility model includes a screening box, a fixing protrusion fixedly connected to the inner side wall of the screening box, and multiple fixing protrusions are arranged correspondingly; a fixing protrusion is provided on the top of the fixing protrusion; a screening box is provided inside the screening box, and two screening boxes are arranged correspondingly; a limiting platform is fixedly connected to the bottom of the screening box, and a supporting spring is provided between the fixing protrusion and the limiting platform; a connecting shaft is fixedly connected to the inner side wall of the screening box; an inclined screen is fixedly connected to the inner side wall of the screening box; a vibration motor is fixedly connected to the side wall of the screening box, and two vibration motors are respectively arranged corresponding to the position of the connecting shaft; a discharge hopper is fixedly connected to the side wall of the screening box; through the above structure, two screening boxes are set to screen the grain twice, thereby distinguishing grains of different particle sizes. At the same time, by taking advantage of the inclined state of the inclined screen, the grain remaining on the top of the inclined screen is discharged from the device under the influence of vibration, which is conducive to realizing automated two-stage screening of grains.

[0007] Preferably, an air inlet duct is fixedly connected to the side wall of the screening box; a fixing frame is provided inside the air inlet duct, the fixing frame is set to correspond to the size of the air inlet duct, and two fixing frames are arranged correspondingly; a fixing block is fixedly connected to the side wall of the fixing frame, and multiple fixing blocks are arranged correspondingly; a fixing bracket is fixedly connected to the inner side wall of the fixing frame; a fan is fixedly connected to the side wall of the fixing bracket; through the above structure, a detachable fixing frame is provided, and a fan is set inside the fixing frame, thereby introducing external air with the help of the fan and carrying out the dust inside the device, which is beneficial for removing light impurities mixed in with the grain, improving the screening capacity of the device, and reducing the difficulty of secondary cleaning of the grain.

[0008] Preferably, the air inlet duct is provided with a clamping frame inside, and the size of the clamping frame corresponds to that of the fixed frame; a clamping spring is fixedly connected between the air inlet duct and the clamping frame, and multiple clamping springs are arranged in a corresponding manner; with the above structure, the clamping frame is set to contact the side wall of the fixed frame, and the clamping spring is set to apply stress to the clamping frame, so that the clamping frame is in close contact with the side wall of the fixed frame, which helps to maintain the stability of the fixed frame, reduce component shaking, and reduce noise.

[0009] Preferably, an air outlet duct is fixedly connected to the side wall of the screening box, and the air outlet duct is positioned corresponding to the air inlet duct. Through the above structure, the air outlet duct guides the air containing mixed impurities to be discharged, thereby preventing the air containing impurities from spreading in the air, which is beneficial to protecting the air quality of the working environment and protecting the workers.

[0010] Preferably, a limiting ring is fixed to the inner wall of the screening box, and the two limiting rings are respectively set to the positions of the screening box; through the above structure, the limiting rings block the grain, thereby preventing the grain from entering the gap between the components, which is conducive to improving the screening effect of the device.

[0011] Preferably, the side wall of the screening box is provided with through grooves, and multiple through grooves are respectively set at the positions of the vibration motors; through the above structure, the through grooves provide convenience for the staff to observe the screening, which helps to improve the convenience of the device.

[0012] Preferably, the side wall of the screening box is coated with an anti-rust coating; by applying an anti-rust coating to the surface of the screening box, it is beneficial to extend the service life of the device and reduce the maintenance requirements of the device.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The grain processing screening device of this utility model performs two screenings of grain by setting two screening boxes, thereby distinguishing grains of different sizes. At the same time, by taking advantage of the tilting state of the inclined screen, the grains remaining at the top of the inclined screen are discharged from the device under the influence of vibration, which is conducive to realizing automated two-stage screening of grains.

[0015] 2. The grain processing screening device of this utility model, by setting a detachable fixed frame and installing a fan inside the fixed frame, introduces external air with the help of the fan and carries out the dust inside the device, which is beneficial to remove light impurities mixed in with the grain, improves the screening capacity of the device, and reduces the difficulty of secondary cleaning of the grain. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the screening box in this utility model;

[0019] Figure 3 This is a schematic diagram of the air inlet duct in this utility model;

[0020] Figure 4 This is a schematic diagram of the sieving box in this utility model.

[0021] In the diagram: 1. Screening box; 11. Fixing protrusion; 12. Supporting spring; 13. Screening box; 14. Limiting platform; 15. Inclined screen; 16. Connecting shaft; 17. Vibrating motor; 18. Discharge hopper; 2. Air inlet duct; 21. Fixing frame; 22. Fixing block; 23. Fixing bracket; 24. Fan; 3. Clamping frame; 31. Clamping spring; 4. Air outlet duct; 5. Limiting ring; 6. Through groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Specific implementation examples are given below.

[0024] like Figure 1 , Figure 2 and Figure 4As shown, the grain processing screening device of this utility model embodiment includes a screening box 1. A fixing protrusion 11 is fixedly connected to the inner wall of the screening box 1, and multiple fixing protrusions 11 are arranged correspondingly. A fixing protrusion 11 is also provided at the top of the fixing protrusion 11. A screening box 13 is provided inside the screening box 1, and two screening boxes 13 are arranged correspondingly. A limiting platform 14 is fixedly connected to the bottom of the screening box 13, and a supporting spring 12 is provided between the fixing protrusion 11 and the limiting platform 14. A connecting shaft 16 is fixedly connected to the inner wall of the screening box 13. An inclined screen 15 is fixedly connected to the inner wall of the screening box 13. A vibration motor 17 is fixedly connected to the side wall of the screening box 13, and two vibration motors 17 are respectively arranged corresponding to the positions of the connecting shaft 16. A discharge hopper 18 is fixedly connected to the side wall of the screening box 13. During operation, the operator can drive the vibration motors 17 to make the two screening boxes 13 inside the screening box 1 vibrate separately. This process completes the screening of grains. Whenever the vibrating motor 17 starts working, a supporting spring 12 is provided between the limiting platform 14 and the fixed protrusion 11 fixed to the bottom of the screening box 13. Along with the vibration of the vibrating motor 17, the screening box 13 will vibrate synchronously, driving the inclined screen 15, which is fixed to itself, to vibrate. After the grains fall into the top of the inclined screen 15, due to the inclined shape of the inclined screen 15, the grains will gradually move to the discharge hopper 18 while being vibrated, and be discharged from the screening box 1 through the discharge hopper 18. The connecting shaft 16 serves to connect the two vibrating motors 17. Through the above structure, two screening boxes 13 are set up to screen the grains twice, thereby distinguishing grains of different sizes. At the same time, with the help of the inclined state of the inclined screen 15, the grains remaining on the top of the inclined screen 15 are discharged from the device under the influence of vibration, which is conducive to realizing automated two-stage screening of grains.

[0025] like Figures 1 to 3As shown, an air inlet duct 2 is fixedly connected to the side wall of the screening box 1; a fixed frame 21 is provided inside the air inlet duct 2, the fixed frame 21 is set to correspond to the size of the air inlet duct 2, and two fixed frames 21 are set in a corresponding manner; a fixing block 22 is fixedly connected to the side wall of the fixed frame 21, and multiple fixing blocks 22 are set in a corresponding manner; a fixing bracket 23 is fixedly connected to the inner side wall of the fixed frame 21; a fan 24 is fixedly connected to the side wall of the fixing bracket 23; during operation, the operator can drive the fixed frame 21 to allow external air to quickly enter the device. At this time, because the hole size on the surface of the inclined screen 15 is small, and the inclined... The top of the inclined screen 15 contains grains. Most of the air will quickly pass through the device and carry away the dust between the two inclined screens 15. The operator can use the fixing block 22 to fix the fixing frame 21 to the side wall of the air inlet duct 2. The fixing frame 23 serves to fix the fan 24. Through the above structure, a detachable fixing frame 21 is set, and the fan 24 is set inside the fixing frame 21. The fan 24 introduces external air and carries out the dust inside the device, which helps to remove light impurities mixed in with the grains, improves the screening capacity of the device, and reduces the difficulty of secondary cleaning of the grains.

[0026] like Figure 3 As shown, a clamping frame 3 is provided inside the air inlet duct 2, and the size of the clamping frame 3 corresponds to that of the fixed frame 21. A clamping spring 31 is fixed between the air inlet duct 2 and the clamping frame 3, and multiple clamping springs 31 are arranged in a corresponding manner. During operation, when the operator fixes the fixed frame 21 inside the air inlet duct 2, the side wall of the fixed frame 21 will come into contact with the side wall of the clamping frame 3, and the multiple clamping springs 31 fixed between the air inlet duct 2 and the clamping frame 3 will be compressed. Through the above structure, the clamping frame 3 is set to contact the side wall of the fixed frame 21, and the clamping springs 31 are set to apply stress to the clamping frame 3, so that the clamping frame 3 is in close contact with the side wall of the fixed frame 21, which helps to maintain the stability of the fixed frame 21, reduce component shaking, and reduce noise.

[0027] like Figure 1 and Figure 2 As shown, an air outlet duct 4 is fixed to the side wall of the screening box 1, and the air outlet duct 4 is positioned corresponding to the air inlet duct 2. During operation, since there is grain on the top of the inclined screen 15, some of the air entering the device under the influence of the fan 24 will quickly pass through the device and eventually be discharged from the air outlet duct 4. During this process, some dust inside the device will be carried away by the air. Through the above structure, the air outlet duct 4 is set to guide the air mixed with impurities to be discharged, thereby preventing the air containing impurities from spreading in the air, which is beneficial to protecting the air quality of the working environment and protecting the staff.

[0028] like Figure 1 and Figure 2As shown, a limiting ring 5 is fixedly connected to the inner wall of the screening box 1, and the two limiting rings 5 ​​are respectively set to the positions of the screening box 13. During operation, the limiting rings 5 ​​are set to the positions and dimensions of the screening box 13. The cross-section of the limiting ring 5 is L-shaped. Whenever grain falls into the device, the limiting ring 5 can block the grain without affecting the normal vibration of the screening box 13, thereby preventing the grain from entering the gap between the screening box 13 and the screening box 1. Through the above structure, the limiting ring 5 is set to block the grain, thereby preventing the grain from entering the gap between the components, which is beneficial to improving the screening effect of the device.

[0029] like Figure 1 As shown, a through groove 6 is provided on the side wall of the screening box 1, and multiple through grooves 6 are respectively set to the positions of the vibration motor 17. During operation, the through grooves 6 are set to correspond to the size and vibration range of the vibration motor 17. Since the through grooves 6 are provided on the side wall of the screening box 1, the vibration motor 17 can work normally. At the same time, the staff can use the through grooves 6 to see the screening situation inside the device. Through the above structure, the through grooves 6 provide convenience for the staff to observe the screening, which helps to improve the convenience of the device.

[0030] like Figure 1 As shown, the side wall of the screening box 1 is coated with an anti-rust coating; during operation, the anti-rust coating can enhance the surface oxidation resistance of the screening box 1; through the above, the anti-rust coating on the surface of the screening box 1 helps to extend the service life of the device and reduce the maintenance requirements of the device.

[0031] During operation, the operator can drive the vibration motor 17 to vibrate the two screening boxes 13 inside the screening box 1, thereby completing the screening of grains. Whenever the vibration motor 17 starts working, a support spring 12 is installed between the limiting platform 14 and the fixed protrusion 11 at the bottom of the screening box 13. Along with the vibration of the vibration motor 17, the screening box 13 vibrates synchronously, causing the inclined screen 15, which is fixedly connected to it, to vibrate. After the grains fall onto the top of the inclined screen 15, due to the inclined shape of the screen 15, the grains... While being vibrated, the material gradually moves to the discharge hopper 18 and is discharged from the screening box 1. The connecting shaft 16 connects the two vibrating motors 17. Operators can quickly allow external air to enter the device by driving the fixed frame 21. Because the holes on the surface of the inclined screen 15 are small and there is grain on the top of the inclined screen 15, most of the air will quickly pass through the device, carrying away the dust between the two inclined screens 15. Operators can use the fixing block 22 to fix the fixed frame 21 in place. On the side wall of the air duct 2, the fixing frame 23 serves to fix the fan 24. During the process of fixing the fixing frame 21 inside the air duct 2, the side wall of the fixing frame 21 will contact the side wall of the clamping frame 3, and the multiple clamping springs 31 fixed between the air duct 2 and the clamping frame 3 will be compressed. Because there is grain on the top of the inclined screen 15, some air entering the device due to the influence of the fan 24 will quickly pass through the device and finally be discharged from the air outlet duct 4. During this process, some dust inside the device will be carried away by the air. The limiting ring 5 corresponds to the screening box 13. The position and size settings include an L-shaped limit ring 5. Whenever grain falls into the device, the limit ring 5 can block the grain without affecting the normal vibration of the screening box 13, thereby preventing the grain from entering the gap between the screening box 13 and the screening chamber 1. The through groove 6 is set according to the size and vibration range of the vibration motor 17. Since the through groove 6 is provided on the side wall of the screening chamber 1, the vibration motor 17 can work normally. At the same time, the operator can use the through groove 6 to see the screening situation inside the device. The anti-rust coating can enhance the surface oxidation resistance of the screening chamber 1.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grain processing screening device, comprising a screening box (1), characterized in that: The inner wall of the screening box (1) is fixed with a fixing protrusion (11), and multiple fixing protrusions (11) are arranged in a corresponding manner; a fixing protrusion (11) is provided on the top of the fixing protrusion (11); a screening box (13) is provided inside the screening box (1), and two screening boxes (13) are arranged in a corresponding manner; a limiting platform (14) is fixed to the bottom of the screening box (13), and a supporting spring (12) is provided between the fixing protrusion (11) and the limiting platform (14); a connecting shaft (16) is fixed to the inner wall of the screening box (13); an inclined screen (15) is fixed to the inner wall of the screening box (13); a vibrating motor (17) is fixed to the side wall of the screening box (13), and two vibrating motors (17) are respectively arranged corresponding to the position of the connecting shaft (16); a discharge hopper (18) is fixed to the side wall of the screening box (13).

2. The grain processing screening device according to claim 1, characterized in that: An air inlet duct (2) is fixedly connected to the side wall of the screening box (1); a fixing frame (21) is provided inside the air inlet duct (2), the fixing frame (21) is set to the size of the air inlet duct (2), and two fixing frames (21) are set in a corresponding manner; a fixing block (22) is fixedly connected to the side wall of the fixing frame (21), and multiple fixing blocks (22) are set in a corresponding manner; a fixing frame (23) is fixedly connected to the inner side wall of the fixing frame (21); a fan (24) is fixedly connected to the side wall of the fixing frame (23).

3. The grain processing screening device according to claim 2, characterized in that: The air inlet duct (2) is provided with a clamping frame (3), and the clamping frame (3) is set to the size of the fixed frame (21); a clamping spring (31) is fixed between the air inlet duct (2) and the clamping frame (3), and multiple clamping springs (31) are arranged in a corresponding manner.

4. The grain processing screening device according to claim 2, characterized in that: An air outlet duct (4) is fixedly connected to the side wall of the screening box (1), and the air outlet duct (4) is positioned corresponding to the air inlet duct (2).

5. The grain processing screening device according to claim 4, characterized in that: Limiting rings (5) are fixedly attached to the inner wall of the screening box (1), and the two limiting rings (5) are respectively set to the positions of the screening box (13).

6. The grain processing screening device according to claim 5, characterized in that: The screening box (1) has a through groove (6) on its side wall, and the multiple through grooves (6) are respectively set at the positions of the vibration motor (17).

7. The grain processing screening device according to claim 6, characterized in that: The side wall of the screening box (1) is coated with an anti-rust coating.

Images