A multi-stage corn screening device

Abstract

The utility model discloses a multistage corn screening device relates to corn screening field, including screening box, the screening box is provided with a plurality of screening board along the direction of own height, the aperture of a plurality of screening board gradually decreases from top to bottom, the top of screening box is provided with the discharge gate, the sidewall of screening box is installed the fan, the blowing direction level of fan arrangement, the sidewall of screening box is provided with the discharge window, the discharge pipe is installed to the position of discharge window of screening box, the discharge window is located on the blowing path of fan, and the corn falling from the discharge gate first passes through the blowing area of fan and then falls on the screening board, and the corn falls on the screening board and is screened first through the fan and is screened, and the gravity difference between corn and corn silk is big, and the corn silk is removed, so that the subsequent screening operation is not affected.

Description

Technical Field

[0001] This utility model relates to the field of corn screening technology, specifically a multi-stage corn screening device. Background Technology

[0002] Screening and separation technology is often used to separate solids from solids and solids from liquids. For the separation of solids from solids, screening is often carried out by screening based on particle size. Its applications are wide-ranging, with extensive use in both industry and agriculture.

[0003] In agriculture, screening corn kernels is one of the methods used. Currently, when screening corn kernels, a single-stage screening method is often used. However, the size difference of the corn kernels screened out is still relatively large. In addition, there are too many corn silks mixed in with the corn, which can coat the corn kernels and thus affect the screening. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a multi-stage corn screening device to address the deficiencies of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solution: a multi-stage corn screening device, including a screening box, in which multiple screening plates are arranged along its own height, the aperture of the multiple screening plates gradually decreasing from top to bottom, a discharge port is opened at the top of the screening box, a fan is installed on the side wall of the screening box, the blowing direction of the fan is horizontal, a discharge window is opened on the side wall of the screening box, a discharge pipe is installed at the discharge window of the screening box, the discharge window is located on the blowing path of the fan, and the corn falling from the discharge port first passes through the blowing area of ​​the fan and then falls on the screening plates.

[0006] Furthermore, a feeding mechanism is provided on the top of the screening box. The feeding mechanism includes a hopper and an opening adjustment plate. The bottom opening of the hopper is connected to the discharge port. One end of the opening adjustment plate is inserted into the hopper. The opening adjustment plate has a degree of freedom to move in the horizontal direction to adjust the size of the discharge opening of the hopper.

[0007] Furthermore, the top of the screening box is fixed with two bases spaced apart, and a lead screw is provided between the two bases. The two ends of the lead screw are rotatably connected to the two bases respectively. A lead screw slider is threaded onto the lead screw, and the bottom of the lead screw slider contacts the top surface of the screening box. The opening adjustment plate is fixed to the top of the lead screw slider.

[0008] Furthermore, one end of the lead screw passes through the base and is fixed with a manual turntable.

[0009] Furthermore, a locking bolt is threaded onto the base, and the tail of the locking bolt penetrates into the base and abuts against the lead screw.

[0010] Furthermore, the outer wall of the screening box is provided with multiple vibrators.

[0011] Furthermore, a baffle is slidably provided on the inner top wall of the discharge window, and the baffle has the freedom to move along the height direction of the screening box.

[0012] Furthermore, a vertical groove is provided on the inner top wall of the discharge window, the top of the baffle is slidably adapted to the vertical groove, and a cylinder is vertically installed on the top of the screening box, the telescopic shaft of the cylinder is movably inserted into the vertical groove and connected to the baffle.

[0013] Furthermore, the front end face of the screening box is open, and a door is hinged to the front end face of the screening box. A horizontal sliding groove is provided on the side wall of the screening box, and the side of the screening plate is slidably adapted to the horizontal sliding groove.

[0014] The beneficial effects of this utility model are:

[0015] 1. It is equipped with multiple screening plates, and the aperture of the screening plates gradually decreases from top to bottom to form multi-stage screening, which can screen corn into different ranges of particle size, so that the corn particles screened into a uniform range have a small difference in size, which is convenient for subsequent production.

[0016] 2. Before the corn falls onto the screening plate for screening, it is first blown by a fan to remove impurities. The large difference in gravity between the corn and the corn silk is used to remove the corn silk, so that the subsequent screening operation is not affected. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of a multi-stage corn screening device according to the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0020] In the diagram, 1-screening box, 2-screening plate, 3-feeding port, 4-fan, 5-discharge window, 6-discharge pipe, 7-feeding hopper, 8-opening adjustment plate, 9-base, 10-lead screw, 11-lead screw slider, 12-manual turntable, 13-locking bolt, 14-baffle, 15-vertical chute, 16-cylinder. Detailed Implementation

[0021] like Figures 1 to 3 As shown, a multi-stage corn screening device includes a screening box 1. Multiple screening plates 2 are arranged along the height of the screening box 1, with the aperture of the screening plates 2 gradually decreasing from top to bottom. A discharge port 3 is opened at the top of the screening box 1. A fan 4 is installed on the side wall of the screening box 1, with the fan 4 blowing horizontally. A discharge window 5 is opened on the side wall of the screening box 1, and a discharge pipe 6 is installed at the discharge window 5. The discharge window 5 is located in the blowing path of the fan 4. Corn falling from the discharge port 3 first passes through the blowing area of ​​the fan 4 and then falls onto the screening plates 2. The corn passes through the discharge port 3. The corn enters the screening box 1 through the feed inlet 3. Before falling onto the screening plate 2, the corn passes through the blowing area of ​​the blower 4. Due to the large weight difference between the corn and the corn silk, the corn silk is blown into the discharge window 5 and finally discharged into the designated position through the discharge pipe 6, thereby quickly removing the corn silk from the corn and preventing the subsequent screening operation from being affected by the corn silk. Secondly, since the aperture of the multiple screening plates 2 gradually decreases from top to bottom, multi-stage screening is formed, which can screen the corn into different ranges of particle size, making the difference in the size of the corn particles within a uniform range smaller, which is convenient for subsequent production.

[0022] Furthermore, the outer wall of the screening box 1 is equipped with multiple vibrators, which cause the screening box to vibrate, thereby accelerating the screening of corn.

[0023] Example 2

[0024] Based on Embodiment 1, the front end of the screening box 1 is open, and a door is hinged to the front end of the screening box 1. A horizontal sliding groove is provided on the side wall of the screening box 1, and the side of the screening plate 2 is slidably adapted to the horizontal sliding groove. After screening, the door can be opened to feed the corn on the screening plate 2. At the same time, the screening plate 2 adopts a detachable installation method, which is convenient for replacement or maintenance of the screening plate 2.

[0025] Example 3

[0026] Based on Example 2, such as Figure 1 and Figure 2As shown, a feeding mechanism is provided on the top of the screening box 1. The feeding mechanism includes a hopper 7 and an opening adjustment plate 8. The bottom opening of the hopper 7 is connected to the discharge port 3. One end of the opening adjustment plate 8 is inserted into the hopper 7. The opening adjustment plate 8 has a degree of freedom to move in the horizontal direction, which is used to adjust the size of the discharge opening of the hopper 7. Two bases 9 are fixedly fixed at a distance on the top of the screening box 1. A lead screw 10 is provided between the two bases 9. The two ends of the lead screw 10 are rotatably connected to the two bases 9 respectively. A lead screw slider 11 is threaded onto the lead screw 10. The bottom of the lead screw slider 11 contacts the top surface of the screening box 1. The opening adjustment... Plate 8 is fixed to the top of screw slider 11. One end of screw 10 passes through base 9 and is fixed with manual turntable 12. Rotating manual turntable 12 drives screw 10 to rotate, causing screw slider 11 to move linearly along the axis of screw 10. Screw slider 11 drives opening adjustment plate 8 to move, thereby adjusting the size of the feeding opening of feeding hopper 7. Corn is put into feeding hopper 7. By adjusting the size of the feeding opening, the flow rate of corn is controlled, avoiding the problem of too much corn entering screening box 1 at one time, causing corn and corn silk to fall onto the screening plate together, reducing the flow rate of corn and improving the removal effect of corn silk.

[0027] Example 4

[0028] Based on Embodiment 3, a locking bolt 13 is threaded onto the base 9. The tail of the locking bolt 13 is inserted into the base 9 and abuts against the lead screw 10. Since the screening box 1 will vibrate, the lead screw 10 is prone to automatic deflection, thus failing to maintain the size of the discharge opening. Therefore, after adjusting the size of the discharge opening, tighten the locking bolt 13 to lock the rotational freedom of the lead screw 10, thereby keeping the size of the discharge opening unchanged.

[0029] Example 5

[0030] Based on Example 4, such as Figure 1 and Figure 3 As shown, a baffle 14 is slidably installed on the inner top wall of the discharge window 5. The baffle 14 has the freedom to move along the height direction of the screening box 1. A vertical groove 15 is opened on the inner top wall of the discharge window 5. The top of the baffle 14 is slidably adapted to the vertical groove 15. A cylinder 16 is vertically installed on the top of the screening box 1. The telescopic shaft of the cylinder 16 moves into the vertical groove 15 and connects to the baffle 14. When the corn is fed, the cylinder 16 drives the baffle 14 to move into the vertical groove 15, so that the discharge window 5 is opened, allowing the corn silk to enter the discharge pipe through the discharge window 5. When the feeding is completed and screening is carried out, the cylinder 16 drives the baffle 14 to move downward, so that the baffle 14 seals the discharge window 5, preventing the corn from entering the discharge pipe due to vibration.

Claims

1. A multi-stage corn screening device, characterized in that, The screen includes a screening box (1), which has multiple screening plates (2) arranged along its height. The aperture of the multiple screening plates (2) gradually decreases from top to bottom. The top of the screening box (1) has a discharge port (3). A fan (4) is installed on the side wall of the screening box (1). The fan (4) is set horizontally. The side wall of the screening box (1) has a discharge window (5). The screening box (1) has a discharge pipe (6) installed at the discharge window (5). The discharge window (5) is located on the blowing path of the fan (4). The corn falling from the discharge port (3) first passes through the blowing area of ​​the fan (4) and then falls on the screening plate (2).

2. The multi-stage corn screening device according to claim 1, characterized in that, The top of the screening box (1) is provided with a feeding mechanism, which includes a feeding hopper (7) and an opening adjustment plate (8). The bottom opening of the feeding hopper (7) is connected to the feeding port (3). One end of the opening adjustment plate (8) is inserted into the feeding hopper (7). The opening adjustment plate (8) has a degree of freedom to move in the horizontal direction and is used to adjust the size of the feeding opening of the feeding hopper (7).

3. The multi-stage corn screening device according to claim 2, characterized in that, The top of the screening box (1) is fixed with two bases (9) spaced apart. A lead screw (10) is provided between the two bases (9). The two ends of the lead screw (10) are rotatably connected to the two bases (9). A lead screw slider (11) is threaded onto the lead screw (10). The bottom of the lead screw slider (11) contacts the top surface of the screening box (1). The opening adjustment plate (8) is fixed to the top of the lead screw slider (11).

4. The multi-stage corn screening device according to claim 3, characterized in that, One end of the lead screw (10) passes through the base (9) and is fixed with a manual turntable (12).

5. A multi-stage corn screening device according to claim 3, characterized in that, A locking bolt (13) is threaded onto the base (9), and the tail of the locking bolt (13) is inserted into the base (9) and abuts against the lead screw (10).

6. The multi-stage corn screening device according to claim 1, characterized in that, The outer wall of the screening box (1) is provided with multiple vibrators.

7. A multi-stage corn screening device according to claim 1, characterized in that, A baffle (14) is slidably provided on the inner top wall of the discharge window (5), and the baffle (14) has the freedom to move along the height direction of the screening box (1).

8. A multi-stage corn screening device according to claim 7, characterized in that, The inner top wall of the discharge window (5) is provided with a vertical slide groove (15), the top of the baffle (14) is slidably adapted to the vertical slide groove (15), and a cylinder (16) is vertically installed on the top of the screening box (1). The telescopic shaft of the cylinder (16) moves into the vertical slide groove (15) and connects to the baffle (14).

9. A multi-stage corn screening device according to claim 1, characterized in that, The screening box (1) has an opening at the front end, and a door is hinged to the front end of the screening box (1). A horizontal sliding groove is provided on the side wall of the screening box (1), and the side of the screening plate (2) is slidably adapted to the horizontal sliding groove.

Images