Adjustable multi-layer screening device for grain screening

Abstract

The utility model discloses a kind of adjustable multi-layer screening devices of grain screening, belong to grain processing technical field, to solve the problem in the screening process of prior art, in order to increase the precision screening of grain screening, internal screening machine is often set more than one screen, but the screen layer of current is fixed setting, mesh can not be adjusted according to actual use demand. Including screening box, feed inlet, screening mechanism and drive mechanism, the upper surface of the screening box is provided with feed inlet, the inside of the screening box has multiple mobile grooves for the installation of screening mechanism, the screening mechanism includes drive frame and screening frame;The drive mechanism includes telescopic cylinder, drive rod and drive block, and the telescopic cylinder is fixedly installed above the screening box. The adjustable multi-layer screening device of grain screening, the screening of grain is more meticulous, the screening frame of multi-layer can be adjusted and replaced, meet the screening demand of different kinds of grain.

Description

Technical Field

[0001] This utility model belongs to the field of grain processing technology, specifically relating to an adjustable multi-layer screening device for grain screening. Background Technology

[0002] Grain screening is a crucial step in grain processing and agricultural production, aiming to improve the purity and quality of grains for easier subsequent processing and storage. Grain screening utilizes a sieve surface with sieve holes of a specific size to separate materials according to particle size. Its core principle is: oversize (materials larger than the sieve hole size, such as impurities and large grain particles) remains on the sieve surface, while undersize (materials smaller than the sieve hole size, such as small grain particles and impurities) passes through the sieve holes. In grain production, impurities need to be removed, typically using a vibrating screening machine. To increase screening accuracy, screening machines often have multiple layers of sieves, but current sieve layers are fixed, and the mesh size cannot be adjusted according to actual needs. Therefore, the inventor proposes an adjustable multi-layer grain screening device. Utility Model Content

[0003] (1) Technical problems to be solved In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable multi-layer screening device for grain screening. It aims to solve the problem that in the existing screening process, in order to increase the accuracy of grain screening, screening machines often have more than one layer of screen inside, but the current screen layers are fixed and the mesh size cannot be adjusted according to actual use needs.

[0004] (2) Technical solution To address the aforementioned technical problems, this utility model provides an adjustable multi-layer grain screening device, comprising a screening box, a feed inlet, a screening mechanism, and a drive mechanism. The feed inlet is located on the upper surface of the screening box, and the interior of the screening box has multiple movable slots for mounting the screening mechanism. The screening mechanism includes a drive frame and a screening frame. The drive mechanism includes a telescopic cylinder, a drive rod, and a drive block. The telescopic cylinder is fixedly installed above the screening box, with its telescopic end extending into the interior of the screening box. The telescopic end of the telescopic cylinder is connected to the drive rod, which is vertically oriented. The drive frame and the screening frame are movably fitted together. The drive frame has a hollow rectangular frame structure and slides along an inner groove. An opening is located on the side wall of the drive frame, and the screening frame slides into the drive frame through this opening. This allows for more precise grain screening, and the multiple screening frames can be adjusted and replaced to meet the screening needs of different types of grain.

[0005] Preferably, a handle is fixedly connected to the side wall of the filter box.

[0006] Preferably, the bottom of the filter frame is a mesh surface, a guide block protrudes from the side wall of the filter frame, and a guide groove adapted to the guide block is horizontally opened on the inner side wall of the drive frame.

[0007] Preferably, the guide block has an inner groove at its end, and a pull block is provided in the inner groove. One side of the pull block is fixedly connected to a buckle that passes through the guide block and engages with the inner wall of the guide groove, and the other end is fixedly connected to a spring. The inner wall of the guide groove has a locking hole adapted to the buckle.

[0008] Preferably, the screening box has a through hole inside, multiple sets of moving slots are connected to each other, and a discharge port is opened at the bottom of the screening box.

[0009] Preferably, the side of the drive frame that slides out relative to the screening frame has a protrusion with a protrusion, and multiple drive blocks are distributed at intervals on the outer wall of the drive rod, and the contact surfaces of the drive blocks and the protrusions are all arc-shaped structures.

[0010] Preferably, an elastic element is fixedly connected to the outer wall of the drive frame, and a fixing block is fixedly connected to the side of the elastic element away from the drive frame, and the fixing block is fixedly connected to the inner wall of the screening box.

[0011] (3) Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: This invention benefits from the separable design of the screening frame and the drive frame, allowing the screening frame to be adjusted and replaced according to actual usage needs. By pulling the pull block, the elastic element is compressed, causing the latch to disengage from the locking hole. The screening frame can then be pulled out of the drive frame using the handle, and a screening frame with the required aperture can be reinstalled into the drive frame, completing the adjustment and replacement. This makes grain screening more precise. Multiple screening frames can be adjusted and replaced to meet the screening needs of different types of grains. It is highly practical, easy to operate, and can be widely promoted. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the screening mechanism and the drive mechanism. Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the screening box.

[0014] The labels in the attached diagram are as follows: 1. Screening box; 2. Discharge port; 3. Screening mechanism; 4. Moving trough; 5. Feed port; 6. Drive mechanism; 7. Handle; 8. Screening frame; 9. Drive frame; 10. Guide block; 11. Drive block; 12. Drive rod; 13. Spring; 14. Fixing block; 15. Protrusion; 16. Telescopic cylinder; 17. Inner slide groove; 18. Elastic element; 19. Buckle; 20. Pull block; 21. Through hole. Detailed Implementation

[0015] 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.

[0016] This specific embodiment is an adjustable multi-layer screening device for grain screening, and its structural schematic diagram is shown below. Figure 1 As shown, it includes a screening box 1, a feed inlet 5, a screening mechanism 3, and a drive mechanism 6. The upper surface of the screening box 1 has a feed inlet 5. The interior of the screening box 1 has multiple movable slots 4 for the installation of the screening mechanism 3. The screening mechanism 3 includes a drive frame 9 and a screening frame 8.

[0017] Reference Figure 2 The drive mechanism 6 includes a telescopic cylinder 16, a drive rod 12, and drive blocks 11. The telescopic cylinder 16 is fixedly installed above the screening box 1, with its telescopic end extending into the screening box 1. The telescopic end of the telescopic cylinder 16 is connected to the drive rod 12, which is vertically oriented. The drive frame 9 and the screening frame 8 are movably connected to each other. The drive frame 9 is a hollow rectangular frame structure that slides along the inner groove 17. An opening is provided on the side wall of the drive frame 9, and the screening frame 8 slides into the drive frame 9 along the opening on its side wall. A handle 7 is fixedly connected to the side wall of the screening frame 8. A protrusion 15 is provided on the side of the drive frame 9 that slides out relative to the screening frame 8. Multiple drive blocks 11 are spaced apart on the outer wall of the drive rod 12, and the contact surfaces of the drive blocks 11 and the protrusions 15 are all arc-shaped.

[0018] Reference Figure 3The bottom of the screening frame 8 is a mesh surface. A guide block 10 protrudes from the side wall of the screening frame 8. A guide groove adapted to the guide block 10 is horizontally opened on the inner side wall of the drive frame 9. An elastic element 18 is fixedly connected to the outer wall of the drive frame 9. A fixing block 14 is fixedly connected to the side of the elastic element 18 away from the drive frame 9. The fixing block 14 is fixedly connected to the inner wall of the screening box 1. An inner sliding groove 17 is opened at the end of the guide block 10. A pull block 20 is provided in the inner sliding groove 17. A buckle 19 that passes through the guide block 10 and engages with the inner wall of the guide groove is fixedly connected to one side of the pull block 20. A spring 13 is fixedly connected to the other end. A locking hole adapted to the buckle 19 is opened on the inner wall of the guide groove. The telescopic cylinder 16 drives the drive rod 12 to move vertically up and down. The drive block 11 on the drive rod 12 contacts the protrusion 15 on the drive frame 9, and the drive frame 9 moves under force. When the end of the drive block 11 contacts the end of the protrusion 15, the drive frame 9 is furthest away from the drive rod 12. At this time, the spring 13 is stretched. When the drive block 11 gradually misaligns with the protrusion 15, the spring 13 returns to its original position, and the drive frame 9 moves closer to the drive rod 12.

[0019] Reference Figure 4 The screening box 1 has a through hole 21 inside, and multiple sets of moving slots 4 are connected to each other. The screening box 1 has a discharge port 2 at the bottom.

[0020] Working principle: During use, the grain to be screened is poured into the screening box 1 through the feed hopper. Then, the telescopic cylinder 16 is activated, driving the drive rod 12 to move vertically. The drive block 11 on the drive rod 12 contacts the protrusion 15 on the drive frame 9, causing the drive frame 9 to move under force. When the outermost end of the drive block 11 contacts the outermost end of the protrusion 15, the drive frame 9 is furthest from the drive rod 12, and the spring 13 is stretched. As the drive block 11 gradually shifts away from the protrusion 15, the spring 13 returns to its original position, and the drive frame 9 moves closer to the drive rod 12. The telescopic cylinder 16 continuously extends and retracts, moving the drive frame 9 and its internal components. The screening frame 8 shakes continuously, and the grain begins to be screened gradually. Large particles of impurities are left in the upper screening frame 8, while grain that meets the requirements descends layer by layer. After multiple screenings, the grain finally slides out along the discharge port 2. Since the size of the impurities to be screened is different, the screening frame 8 can be adjusted and replaced according to actual usage needs. Pulling the pull block 20 compresses the elastic element 18, causing the buckle 19 to disengage from the locking hole. The screening frame 8 can then be pulled out of the drive frame 9 by the handle 7. The screening frame 8 that meets the aperture requirements can then be reinstalled into the drive frame 9 to complete the adjustment and replacement, making the grain screening more detailed and meeting production needs.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable multi-layer screening device for grain screening, comprising a screening box (1), a feed inlet (5), a screening mechanism (3), and a drive mechanism (6), characterized in that, The upper surface of the screening box (1) is provided with a feed inlet (5), and the interior of the screening box (1) has multiple moving slots (4) for the screening mechanism (3) to be installed. The screening mechanism (3) includes a drive frame (9) and a screening frame (8). The driving mechanism (6) includes a telescopic cylinder (16), a driving rod (12) and a driving block (11). The telescopic cylinder (16) is fixedly installed above the screening box (1) and its telescopic end is inserted into the screening box (1) with the telescopic end facing the interior of the screening box (1). The telescopic end of the telescopic cylinder (16) is connected to the driving rod (12), and the driving rod (12) is vertically arranged. The drive frame (9) and the filter frame (8) are movably connected to each other. The drive frame (9) is a hollow rectangular frame structure. The drive frame (9) slides along the inner slide groove (17). An opening is provided on the side wall of the drive frame (9). The filter frame (8) slides into the drive frame (9) along the opening on the side wall.

2. The adjustable multi-layer screening device for grain screening according to claim 1, characterized in that, A handle (7) is fixedly connected to the side wall of the filter box (8).

3. The adjustable multi-layer screening device for grain screening according to claim 2, characterized in that, The bottom of the filter frame (8) is a mesh surface, and a guide block (10) protrudes from the side wall of the filter frame (8). A guide groove adapted to the guide block (10) is horizontally opened on the inner side wall of the drive frame (9).

4. The adjustable multi-layer screening device for grain screening according to claim 3, characterized in that, The guide block (10) has an inner groove (17) at its end. The inner groove (17) has a pull block (20). One side of the pull block (20) is fixedly connected to a buckle (19) that passes through the guide block (10) and engages with the inner wall of the guide groove. The other end is fixedly connected to a spring (13). The inner wall of the guide groove has a hole for the buckle (19).

5. The adjustable multi-layer screening device for grain screening according to claim 1, characterized in that, The screening box (1) has a through hole (21) inside, and multiple sets of moving slots (4) are connected to each other. The screening box (1) has a discharge port (2) at the bottom.

6. The adjustable multi-layer screening device for grain screening according to claim 1, characterized in that, The drive frame (9) has a protrusion (15) on the side that slides out relative to the filter frame (8). Multiple drive blocks (11) are distributed at intervals on the outer wall of the drive rod (12). The contact surfaces of the drive blocks (11) and the protrusions (15) are both arc-shaped structures.

7. The adjustable multi-layer screening device for grain screening according to claim 6, characterized in that, An elastic element (18) is fixedly connected to the outer wall of the drive frame (9), and a fixing block (14) is fixedly connected to the side of the elastic element (18) away from the drive frame (9). The fixing block (14) is fixedly connected to the inner wall of the screening box (1).

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