Grain screening device

Abstract

The utility model discloses a grain screening device which comprises a base, two first sliding rails are assembled on the upper wall of the base, four first sliding blocks are assembled on the two first sliding rails, assembling plates are assembled on every two first sliding blocks respectively, second sliding rails are assembled on the opposite walls of the two assembling plates respectively, and the second sliding rails are assembled on the opposite walls of the two assembling plates respectively. Two second sliding blocks are assembled on each second sliding rail, and a screening box is assembled among the four second sliding blocks. According to the grain screening device, conversion screening of three different screens is achieved, screen replacement is not needed, raised dust can be filtered in the screening process, and life health of workers is protected.

Description

Technical Field

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

[0002] With the development of modern agricultural technology, many crops are harvested and packaged by large-scale equipment. In this process, it is inevitable that more impurities (fine sand, soil, stones, iron fragments, etc.) will enter the grain. If they are not accurately separated, the product quality will be seriously affected.

[0003] Existing electric screening machines are generally vibrating screens, which will generate a large amount of dust during screening. The dust will fly into the air and be inhaled by people. Long-term inhalation of dust will cause great harm to the life and health of operators. In addition, when screening different grains, it is necessary to disassemble and replace sieves of different sizes, which is time-consuming and labor-intensive. There may already be technical solutions to the above technical problems. In view of this, this case wants to provide a replacement or alternative technical solution. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a grain screening device, which solves the technical problem that the existing electric screening machines, which are generally vibrating screens, will generate a large amount of dust during screening. The dust will fly into the air and be inhaled by people. Long-term inhalation of dust will cause great harm to the life and health of the operators. In addition, when screening different grains, it is necessary to disassemble and replace sieves of different sizes, which is time-consuming and labor-intensive.

[0005] To achieve the above purpose, the utility model is implemented through the following technical scheme: a grain screening device, comprising a base (1), wherein the upper wall of the base (1) is equipped with two first slide rails, the two first slide rails are equipped with four first sliders, each two first sliders are respectively equipped with an assembly plate, the two assembly plates are respectively equipped with second slide rails on the opposite walls, each second slide rail is respectively equipped with two second sliders, a screening box is equipped between the four second sliders, a screening structure is equipped in the screening box, two first electric push rods are equipped on the base and between the two first slide rails, two connecting plates are equipped between the two assembly plates, a first connecting rod is equipped between the telescopic ends of the two first electric push rods and the two connecting plates, two second electric push rods are equipped on the two connecting plates, and two second connecting rods are equipped between the two second electric push rods and the screening box.

[0006] Preferably, the screening structure comprises two partitions, a first screen, a second screen, a third screen, a classification plate, a servo motor and a filter part;

[0007] The two partitions are placed in the screening box, the first screen is placed between the two partitions, the second screen and the third screen are placed on the two side walls of the two partitions, the classification plate is movably assembled in the screening box and is located above the first screen, the servo motor is placed on the rear wall of the screening box and the driving end is connected to the classification plate, and the filter part is placed on the screening box.

[0008] Preferably, the filter unit includes two fans and two filter boxes;

[0009] The two fans are embedded in the upper wall of the screening box, and the two filter boxes are arranged on the screening box and are located above the two fans.

[0010] Preferably, a filter layer is embedded in each of the filter boxes.

[0011] Preferably, first material guide plates are respectively mounted on both side walls of the screening box, and a second material guide plate is mounted on the front wall of the screening box.

[0012] Preferably, a feed hopper is installed on the upper wall of the screening box and located between the two filter boxes. Beneficial Effects

[0013] The utility model provides a grain screening device, which has the following beneficial effects: it realizes conversion screening of three different sieves without the need to replace the sieves, and can also filter dust during the screening process, thereby protecting the life and health of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a grain screening device described in the utility model.

[0015] Figure 2 It is a schematic diagram of the side cross-sectional structure of a grain screening device described in the utility model.

[0016] Figure 3 It is a schematic diagram of a top cross-sectional structure of a grain screening device described in the utility model.

[0017] In the figure: 1-base; 2-first slide rail; 3-first slider; 4-assembly plate; 5-second slide rail; 6-second slider; 7-screening box; 8-first electric push rod; 9-connecting plate; 10-first connecting rod; 11-second electric push rod; 12-second connecting rod; 13-partition; 14-first screen; 15-second screen; 16-third screen; 17-classification plate; 18-servo motor; 19-fan; 20-filter box; 21-filter layer; 22-first guide plate; 23-second guide plate; 24-feed 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] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0020] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0021] Example: Refer to Figure 1-3 , realizing the conversion screening of three different sieves, without the need to replace the sieve, and dust filtering can be performed during the screening process to protect the life and health of the staff. The specific working principle is as follows: the screened grain is injected through the feed hopper 24, the classification plate 17 is vertical, and the grain falls directly on the first screen 14, and the first electric push rod 8 installed on the base 1 pushes the first connecting rod 10 installed on its telescopic end to move back and forth, and at the same time drives the connecting plate 9 to make the assembly plate 4 drive the first slide block 3 to swing back and forth on the first slide rail 2, and the grain falling on the first screen 14 is screened. The screened grain flows out through the second guide plate 23. When screening different grains, the servo motor 18 installed on the screening box 7 drives the servo motor 18 connected to its driving end to move back and forth. The classification plate 17 rotates left or right, so that the classification plate 17 tilts to block the first screen, so that the incoming grain passes through the classification plate 17 and falls onto the second screen 15 or the third screen 16. At the same time, the second electric push rod 11 installed on the connecting plate 9 drives the second connecting plate 9 to make the screening box 7 reciprocate on the second slide rail 5 through the second slider 6 for screening. After screening, it will flow out from the corresponding first guide plate 22, so as to realize the screening of three different specifications of grain without changing the screen. At the same time, the fan 19 installed on the screening box 7 runs to extract the dust generated in the screening process, which is filtered through the filter layer 21 in the filter box 20 to protect the working environment and the health of the staff. The partition 13 is used for classification and isolation.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grain screening device, comprising a base (1), characterized in that: The upper wall of the base (1) is equipped with two first slide rails (2), the two first slide rails (2) are equipped with four first sliders (3), each two of the first sliders (3) are equipped with a mounting plate (4), the opposite walls of the two mounting plates (4) are equipped with second slide rails (5), each of the second slide rails (5) is equipped with two second sliders (6), a screening box (7) is installed between the four second sliders (6), and a screening structure is installed in the screening box (7), two first electric push rods (8) are installed on the base (1) and located between the two first slide rails (2), two connecting plates (9) are installed between the two mounting plates (4), a first connecting rod (10) is installed between the telescopic ends of the two first electric push rods (8) and the two connecting plates (9), two second electric push rods (11) are installed on the two connecting plates (9), and two second connecting rods (12) are installed between the two second electric push rods (11) and the screening box (7); The screening structure comprises two partitions (13), a first screen (14), a second screen (15), a third screen (16), a classification plate (17), a servo motor (18) and a filtering part; The two partitions (13) are arranged in the screening box (7), the first screen (14) is arranged between the two partitions (13), the second screen (15) and the third screen (16) are arranged on the two side walls of the two partitions (13), the classification plate (17) is movably assembled in the screening box (7) and is located above the first screen (14), the servo motor (18) is arranged on the rear wall of the screening box (7) and the driving end is connected to the classification plate (17), and the filtering part is arranged on the screening box (7).

2. A grain screening device according to claim 1, characterized in that: The filter unit comprises two fans (19) and two filter boxes (20); The two fans (19) are embedded in the upper wall of the screening box (7), and the two filter boxes (20) are placed on the screening box (7) and located above the two fans (19).

3. A grain screening device according to claim 2, characterized in that: A filter layer (21) is embedded in each of the filter boxes (20).

4. A grain screening device according to claim 1, characterized in that: First material guide plates (22) are respectively mounted on the two side walls of the screening box (7), and a second material guide plate (23) is mounted on the front wall of the screening box (7).

5. A grain screening device according to claim 2, characterized in that: A feed hopper (24) is mounted on the upper wall of the screening box (7) and is located between the two filter boxes (20).

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