Small linear vibrating screen for unprocessed grains

Abstract

The utility model belongs to the technical field of unprocessed grain quality detection, and particularly discloses a small unprocessed grain linear vibrating screen which comprises an upper-layer screen mesh and a lower-layer screen mesh, the lower-layer screen mesh is arranged at the bottom of the upper-layer screen mesh, meshes of the upper-layer screen mesh are larger than those of the lower-layer screen mesh, the upper-layer screen mesh is used for screening out large-particle impurities, and the large-particle impurities are discharged through an upper-layer discharging opening. The lower-layer screen is used for screening out small-particle impurities, and unprocessed grains on the lower-layer screen are discharged through a lower-layer discharging opening; the opening and closing mechanism is used for controlling whether materials on the upper-layer screen enter the upper-layer discharging opening or not, and the opening and closing mechanism is arranged on the upper-layer screen. Through the design of the opening and closing mechanism, unprocessed grains are prevented from entering the upper-layer discharging opening, and then the problem that waste is caused due to the fact that the unprocessed grains enter the upper-layer discharging opening is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of raw grain quality testing equipment, and in particular relates to a small-sized raw grain linear vibrating screen. Background Technology

[0002] As is well known, a linear vibrating screen uses a vibrating motor as the vibration source, causing the material to be thrown up on the screen and move forward in a straight line. The material enters the upper feed inlet of the screening machine evenly, and through multiple screens, it produces various sizes of oversize and undersize materials, which are discharged from their respective outlets.

[0003] However, when the screen of a linear vibrating screen is working, the upper screen screen may discharge the raw grain while screening impurities, resulting in waste of the raw grain. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides a small-sized linear vibrating screen for raw grains, which solves the above problems.

[0005] To achieve the above objectives, this utility model discloses a small linear vibrating screen for raw grains, comprising an upper screen and a lower screen. The lower screen is located at the bottom of the upper screen. The mesh size of the upper screen is larger than that of the lower screen. The upper screen is used to screen out large particles of impurities, which are discharged through the upper feed inlet. The lower screen is used to screen out small particles of impurities, and the raw grain on the lower screen is discharged through the lower feed inlet. The screen also includes an opening and closing mechanism for controlling whether the material on the upper screen enters the upper feed inlet, and the opening and closing mechanism is disposed on the upper screen.

[0006] Compared with the prior art, this application has the following advantages: In use, after the raw grain enters the upper screen, the opening and closing mechanism in the upper screen is closed to prevent impurities and raw grain from entering the upper discharge port, thus solving the problem of waste caused by raw grain entering the upper discharge port; after the upper screen has finished screening, the discharge of impurities (large particles) begins. At this time, the opening and closing mechanism is opened, and the impurities enter the upper discharge port for discharge; the raw grain entering the lower screen continues to be screened, and small particles of impurities fall below the lower screen, while the raw grain is discharged through the lower discharge port, and the small particles of impurities are discharged through the bottom discharge port. The upper discharge port and the bottom discharge port can be designed to be connected, and the impurities are discharged to the designated position through the impurity discharge pipe.

[0007] Furthermore, a material distribution cone plate is provided directly below the feeding port of the upper screen to allow the raw grain to be evenly distributed onto the upper screen.

[0008] Furthermore, a vibrating air hammer is provided below the bulk material cone plate to prevent material from adhering to the screen.

[0009] Furthermore, the lower screen is provided with the bulk material cone plate, and the vibrating air hammer is provided below the bulk material cone plate.

[0010] Furthermore, the opening and closing mechanism includes a guide plate and a guide strip arranged opposite to each other. One end of the guide plate is hinged to the frame and the other end is connected to the telescopic member. Both ends of the guide strip are connected to the frame so that when the telescopic member pushes the guide plate to rotate, the guide plate moves closer to or further away from the guide strip.

[0011] Furthermore, the telescopic component includes a cylinder, a floating joint, and a pull lug. The cylinder is mounted on the guide strip and is connected to the guide plate via the floating joint and the pull lug.

[0012] Furthermore, it also includes a temporary storage bin for holding small particulate impurities screened out by the lower screen.

[0013] Furthermore, the bottom surfaces of the upper screen, the lower screen, and the temporary storage bin are all inclined towards the lower feed inlet.

[0014] Furthermore, it also includes a vibration motor that drives the upper and lower screens to vibrate and is capable of forward and reverse rotation.

[0015] Furthermore, the upper screen, the lower screen, and the temporary storage bin are connected to each other via fasteners. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a small linear vibrating screen for raw grain according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the upper screen in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure after the upper screen is hidden in an embodiment of the present invention.

[0020] The attached figures are labeled as follows:

[0021] 1. Upper screen; 2. Lower screen; 3. Upper discharge port; 4. Lower discharge port; 5. Feeding port; 6. Bulk material cone plate; 7. Vibrating hammer; 8. Guide plate; 9. Guide strip; 10. Frame; 11. Cylinder; 12. Floating joint; 13. Pull lug; 14. Temporary storage bin; 15. Vibrating motor; 16. Fastener; 17. Bottom discharge port. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-3 As shown, this utility model discloses a small linear vibrating screen for raw grain, including an upper screen 1 and a lower screen 2. The lower screen 2 is located at the bottom of the upper screen 1. The mesh size of the upper screen 1 is larger than that of the lower screen 2. The upper screen 1 is used to screen out large particles of impurities, which are discharged through the upper feed port 3. The lower screen 2 is used to screen out small particles of impurities, and the raw grain on the lower screen 2 is discharged through the lower feed port 4. The model also includes an opening and closing mechanism for controlling whether the material on the upper screen 1 enters the upper feed port 3. The opening and closing mechanism is located on the upper screen 1.

[0024] Compared with the prior art, this application has the following advantages: When in use, after the raw grain enters the upper screen 1, the opening and closing mechanism in the upper screen 1 is closed to prevent impurities and raw grain from entering the upper discharge port 3, thus solving the problem of waste caused by the raw grain entering the upper discharge port 3; when the upper screen 1 has finished screening, the discharge of impurities (large particles) begins. At this time, the opening and closing mechanism is opened, and the impurities enter the upper discharge port 3 and are discharged; while the raw grain entering the lower screen 2 continues to be screened, small particles of impurities fall below the lower screen 2, and the raw grain is discharged through the lower discharge port 4, and the small particles of impurities are discharged through the bottom discharge port 17. The upper discharge port 3 and the bottom discharge port 17 can be designed to be connected, and the impurities are discharged to the designated position through the discharge pipe.

[0025] Following the above embodiment, more preferably, a material distribution cone plate 6 is provided directly below the feeding port 5 of the upper screen 1 to evenly disperse the raw grain onto the upper screen 1. The material distribution cone plate 6 not only slows down the speed of the raw grain to reduce its impact on the upper screen 1, but also evenly disperses the raw grain around the upper screen 1, thereby improving screening efficiency.

[0026] Following the above embodiment, a more preferable provision is that a vibrating hammer 7 is provided below the bulk material cone plate 6 to prevent material from adhering to the screen. When the vibrating hammer 7 is working, it generates vibration, shaking off impurities adsorbed on the screen and preventing screen blockage.

[0027] Following the above embodiment, a more preferred embodiment is that a material-dispersing cone plate 6 is provided on the lower screen 2, and a vibrating air hammer 7 is provided below the material-dispersing cone plate 6. The structure and function of this design are the same as above, and will not be described again.

[0028] Following the above embodiments, more specifically, as Figure 2 , Figure 3 As shown, the opening and closing mechanism includes a guide plate 8 and a guide bar 9 arranged opposite to each other. One end of the guide plate 8 is hinged to the frame 10, and the other end is connected to the telescopic member. Both ends of the guide bar 9 are connected to the frame 10, so that when the telescopic member pushes the guide plate 8 to rotate, the guide plate 8 moves closer to or further away from the guide bar 9.

[0029] Following the above embodiment, more specifically, the telescopic component includes a cylinder 11, a floating joint 12, and a pull lug 13. The cylinder 11 is mounted on the guide bar 9 and is connected to the guide plate 8 via the floating joint 12 and the pull lug 13. When the cylinder 11 extends, it drives the guide plate 8 to rotate away from the guide bar 9, so that impurities can enter the upper discharge port 3 through the gap between the guide plate 8 and the guide bar 9. Conversely, when the cylinder 11 is reset, the guide plate 8 and the guide bar 9 are in contact, blocking impurities and raw grains from entering the upper discharge port 3.

[0030] Following the above embodiment, more specifically, it also includes a temporary storage bin 14 for holding small particulate impurities screened out by the lower screen 2. The temporary storage bin 14 is designed to collect small particulate impurities and discharge them through the bottom discharge port 17.

[0031] Following the above embodiment, more preferably, the bottom surfaces of the upper screen 1, the lower screen 2, and the temporary storage bin 14 are all inclined towards the discharge port. This design facilitates the movement of materials towards the discharge port.

[0032] Following the above embodiment, a more preferable addition is a vibrating motor 15 capable of driving the upper screen 1 and the lower screen 2 to vibrate in both forward and reverse directions. When the vibrating motor 15 rotates forward, it is used for screening; when it rotates in reverse, it is used to discharge the material from the screens. It should be noted that, through the forward and reverse rotation design of the vibrating motor 15, the raw grain enters the vibrating screen, undergoes screening first, and then is discharged centrally. This results in a smaller overall size of the vibrating screen, higher screening accuracy and efficiency, and meets the needs of screening small quantities of raw grain frequently.

[0033] Following the above embodiment, more preferably, the upper screen 1, the lower screen 2 and the temporary storage bin 14 are connected to each other by a snap fastener 16. The snap fastener 16 design facilitates the assembly and disassembly of the three components.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A small linear vibrating screen for raw grains, characterized in that, The system includes an upper screen and a lower screen, with the lower screen located at the bottom of the upper screen. The mesh size of the upper screen is larger than that of the lower screen. The upper screen is used to screen out large particles of impurities, which are discharged through the upper discharge port. The lower screen is used to screen out small particles of impurities, and the raw grain on the lower screen is discharged through the lower discharge port. The system also includes an opening and closing mechanism for controlling whether the material on the upper screen enters the upper discharge port. This mechanism is located on the upper screen. The opening and closing mechanism includes a guide plate and a guide strip arranged opposite each other. One end of the guide plate is hinged to the frame, and the other end is connected to a telescopic component. Both ends of the guide strip are connected to the frame, so that when the telescopic component pushes the guide plate to rotate, the guide plate moves closer to or further away from the guide strip.

2. The small-scale linear vibrating screen for raw grains according to claim 1, characterized in that, A material distribution cone plate is provided directly below the feeding port of the upper screen to allow the raw grain to be evenly distributed onto the upper screen.

3. A small-scale linear vibrating screen for raw grains according to claim 2, characterized in that, Below the bulk material cone plate is a vibrating air hammer to prevent material from adhering to the screen.

4. A small-scale linear vibrating screen for raw grains according to claim 3, characterized in that, The lower screen is provided with the bulk material cone plate, and the vibrating air hammer is provided below the bulk material cone plate.

5. A small-scale linear vibrating screen for raw grains according to claim 1, characterized in that, The telescopic component includes a cylinder, a floating joint, and a pull lug. The cylinder is mounted on the guide bar and is connected to the guide plate via the floating joint and the pull lug.

6. A small-scale linear vibrating screen for raw grains according to claim 1, characterized in that, It also includes a temporary storage bin for holding small particulate impurities screened out by the lower screen.

7. A small-scale linear vibrating screen for raw grains according to claim 6, characterized in that, The bottom surfaces of the upper screen, the lower screen, and the temporary storage bin are all inclined downwards towards the feed inlet.

8. A small-scale linear vibrating screen for raw grains according to claim 1, characterized in that, It also includes a vibration motor that drives the upper and lower screens to vibrate and is capable of forward and reverse rotation.

9. A small-scale linear vibrating screen for raw grains according to claim 6 or 7, characterized in that, The upper screen, the lower screen, and the temporary storage bin are connected to each other by fasteners.

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