Rotary vibrating screen for fine selection of wheat

Abstract

The utility model provides a rotary vibrating screen for fine selection of wheat, which comprises a rack, a first screening unit arranged at the top of the rack, a second screening unit arranged on the rack and positioned at the bottom of the first screening unit, and a collecting bin arranged on the rack and positioned at the bottom of the second screening unit, a feeding frame is slidably arranged at the top of the rack, and the first screening unit comprises a first screening frame elastically arranged on the rack and a first screen arranged at the bottom of the first screening frame. The second screening unit comprises a second screening frame elastically arranged on the rack and a second screen arranged at the bottom of the screening frame. According to the rotary vibrating screen for wheat fine selection, due to the fact that the feeding frame can move in a reciprocating mode, wheat to be screened can evenly fall into all positions of the screen cloth when falling into the first-stage screen cloth, and the situation that the service life of the whole screen cloth is affected due to the fact that the local position of the screen cloth is excessively abraded is avoided.

Description

Technical Field

[0001] This utility model relates to the field of grain screening and selection technology, specifically to a rotary vibrating screen for wheat selection. Background Technology

[0002] During harvesting and storage, wheat may be mixed with various impurities, such as grass seeds, stones, mud lumps, and coal lumps. These impurities not only affect the quality of wheat but also have an adverse impact on subsequent processing. Therefore, wheat often needs to be screened and selected to ensure seed quality. In addition, wheat selection can also remove shriveled grains and weed seeds, thereby improving the germination rate and thus having a positive impact on yield.

[0003] Rotary vibrating screens are often used for wheat selection. These screens utilize the vibration force generated by a vibrating motor to cause the screen mesh to rotate. The material moves forward on the screen surface with the vibration and is graded by the size of the screen mesh. Material smaller than the mesh size falls through the mesh and becomes undersize, while material larger than the mesh size continues to move forward and eventually exits from one end of the screen, becoming oversize. This completes the wheat selection process. However, because the feed frame of a rotary vibrating screen is often stationary, the material often falls into the same position in the primary screening mesh. This not only causes the mesh at that position to experience stronger impact and friction but also makes it prone to clogging due to excessively concentrated flow.

[0004] In view of this, a rotary vibrating screen for wheat selection is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the feed frame of a traditional rotary vibrating screen for wheat selection is prone to localized wear and blockage due to its stationary setting, thus affecting the screening effect. The invention provides a rotary vibrating screen for wheat selection.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a rotary vibrating screen for wheat selection, comprising a frame, a first screening unit disposed on the top of the frame, a second screening unit disposed on the frame at the bottom of the first screening unit, and a collection bin disposed on the frame at the bottom of the second screening unit. A feed frame is slidably disposed on the top of the frame. The first screening unit includes a first screening frame elastically disposed on the frame and a first screen disposed at the bottom of the first screening frame. The second screening unit includes a second screening frame elastically disposed on the frame and a second screen disposed at the bottom of the screening frame. The diameter of the first screen is larger than the diameter of the second screen. The first screening unit is used to remove large-volume impurities from wheat, and the second screening unit is used to remove small-volume impurities from wheat.

[0007] Preferably, an electric push rod is fixedly connected to the top of the frame, and the extended end of the electric push rod is fixedly connected to the feed frame. The electric push rod is used to change the position of the feed frame during feeding so that the wheat to be screened can fall more evenly into various parts of the first screen to prevent the first screen from clogging.

[0008] Preferably, connecting rods are fixedly connected to both sides of the feeding frame, and sliders with an inverted T-shaped cross-section are fixedly connected to the bottom of the two connecting rods. A sliding groove adapted to the size of the slider is provided on the top of the frame. The slider and the sliding groove are used to keep the feeding frame stable when it moves.

[0009] Preferably, both the first screening frame and the second screening frame are inclined, and both ends of the first screening frame and the second screening frame are fixedly connected with multiple springs. One end of each of the multiple springs is fixedly connected to the first screening frame or the second screening frame, and the other end of each of the multiple springs is fixedly connected to the frame. A vibration motor is fixedly connected to the lower end face of both the second screening frame and the second screening frame.

[0010] Preferably, the lower end of the first screening frame is provided with a first discharge port, which is used to discharge larger impurities after screening; the lower end of the second screening frame is provided with a second discharge port, which is used to discharge wheat after screening; the collection bin is used to collect smaller impurities screened by the second screening unit; and a third discharge port is provided on one side of the collection bin, which is used to discharge smaller impurities screened out.

[0011] Compared with the prior art, this utility model has the following beneficial effects:

[0012] 1. The rotary vibrating screen for wheat selection provided by this utility model has a reciprocating feed frame, which allows the wheat to be screened to fall more evenly into various positions of the screen when it falls into the primary screen, preventing excessive wear on local parts of the screen and affecting the service life of the entire screen.

[0013] 2. The rotary vibrating screen for wheat selection provided by this utility model has a reciprocating feed frame, which allows the wheat to be screened to fall more evenly into various positions of the screen when it falls into the primary screen, thus solving the problem that the screen is prone to local blockage and affects the screening effect.

[0014] 3. The rotary vibrating screen for wheat selection provided by this utility model has a reciprocating feed frame, which enables the wheat to be quickly screened at various points when it falls into the primary screen, thereby improving the processing efficiency of the device for wheat selection. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0016] In the attached diagram:

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of another embodiment of the present utility model.

[0019] Figure 3 This is a bottom view of an embodiment of the present invention after the second screening unit has been removed.

[0020] Figure 4 This is a split view of the first screening unit and the second screening unit according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the feed frame according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Frame; 2. First screening unit; 21. First screening frame; 22. First screen; 23. First discharge port; 3. Second screening unit; 31. Second screening frame; 32. Second screen; 33. Second discharge port; 4. Collection bin; 41. Third discharge port; 5. Vibrating motor; 6. Spring; 7. Feed frame; 8. Connecting rod; 9. Sliding block; 10. Slide groove; 11. Electric push rod. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figure 1-5 .

[0026] This utility model relates to a rotary vibrating screen for wheat selection, comprising a frame 1, a first screening unit 2 disposed on top of the frame 1, a second screening unit 3 disposed on the frame 1 at the bottom of the first screening unit 2, and a collection bin 4 disposed on the frame 1 at the bottom of the second screening unit 3. A feed frame 7 is slidably disposed on the top of the frame 1. The first screening unit 2 includes a first screening frame 21 elastically disposed on the frame 1 and a first screen 22 disposed at the bottom of the first screening frame 21. The second screening unit 3 includes a second screening frame 31 elastically disposed on the frame 1 and a second screen 32 disposed at the bottom of the screening frame. The diameter of the first screen 22 is larger than the diameter of the second screen 32. The first screening unit 2 is used to remove large-volume impurities from wheat, and the second screening unit 3 is used to remove small-volume impurities from wheat.

[0027] It should be noted that the sliding setting of the feed frame 7 is to make the wheat fall more evenly into the first screen 22, so that it can fall into various positions of the screen for rapid screening. This prevents the wheat from flowing too much in one place and causing the screen to become clogged, thus affecting the screening effect. In addition, it can also prevent the wheat from causing continuous wear and impact on the screen and affecting the service life of the screen.

[0028] The top of the frame 1 is fixedly connected to an electric push rod 11. The extended end of the electric push rod 11 is fixedly connected to the feed frame 7. The electric push rod 11 is used to change the position of the feed frame 7 during feeding so that the wheat to be screened can fall more evenly into the first screen 22 to prevent the first screen 22 from clogging. In specific settings, the feed frame 7 should be directly connected to the wheat feeding device through a conveying pipe or other device to prevent the wheat from spilling out during the movement of the feed frame 7.

[0029] Furthermore, such as Figure 5 As shown, connecting rods 8 are fixedly connected to both sides of the feed frame 7, and sliders 9 with an inverted T-shaped cross section are fixedly connected to the bottom of the two connecting rods 8. A sliding groove 10 with a size matching the slider 9 is opened on the top of the frame 1. This arrangement can prevent the feed frame 7 from tipping over and ensure the stability of the feed frame 7's movement.

[0030] In addition, both the first screening frame 21 and the second screening frame 31 are inclined. Both ends of the first screening frame 21 and the second screening frame 31 are fixedly connected with multiple springs 6. One end of each spring 6 is fixedly connected to the first screening frame 21 or the second screening frame 31, and the other end of each spring 6 is fixedly connected to the frame 1. Vibration motors 5 are fixedly connected to the lower end faces of the second screening frame 31. The vibration motors 5 can cause the first screening frame 21 and the second screening frame 31 to vibrate relative to the frame 1 for screening.

[0031] Specifically, the lower end of the first screening frame 21 is provided with a first discharge port 23, which is used to discharge larger impurities after screening. The lower end of the second screening frame 31 is provided with a second discharge port 33, which is used to discharge wheat after screening. The collection bin 4 is used to collect smaller impurities screened by the second screening unit 3. A third discharge port 41 is provided on one side of the collection bin 4, which is used to discharge smaller impurities screened out.

[0032] It should be noted that, in specific settings, the moving range of the feed frame 7 is consistent with the length of the first screen 22, that is, the moving range of the extended end of the electric push rod 11 should be consistent with the length of the first screen 22.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A rotary vibrating screen for wheat selection, characterized in that: The device includes a frame (1), a first screening unit (2) located on top of the frame (1), a second screening unit (3) located on the frame (1) at the bottom of the first screening unit (2), and a collection bin (4) located on the frame (1) at the bottom of the second screening unit (3). A feed frame (7) is slidably provided on the top of the frame (1). The first screening unit (2) includes a first screening frame (21) elastically provided on the frame (1) and a first screen (22) located at the bottom of the first screening frame (21). The second screening unit (3) includes a second screening frame (31) elastically provided on the frame (1) and a second screen (32) located at the bottom of the screening frame. The diameter of the first screen (22) is larger than the diameter of the second screen (32). The first screening unit (2) is used to screen out large volume impurities in wheat, and the second screening unit (3) is used to screen out small volume impurities in wheat.

2. The rotary vibrating screen for wheat selection as described in claim 1, characterized in that: An electric push rod (11) is fixedly connected to the top of the frame (1). The extended end of the electric push rod (11) is fixedly connected to the feed frame (7). The electric push rod (11) is used to change the position of the feed frame (7) when feeding so that the wheat to be screened can fall more evenly into the first screen (22) to prevent the first screen (22) from becoming blocked.

3. The rotary vibrating screen for wheat selection as described in claim 2, characterized in that: Both sides of the feed frame (7) are fixedly connected to connecting rods (8), and the bottom of the two connecting rods (8) are fixedly connected to sliders (9) with an inverted T-shaped cross section. The top of the frame (1) is provided with a slide groove (10) that matches the size of the slider (9). The slider (9) and the slide groove (10) are used to keep the feed frame (7) stable when it moves.

4. The rotary vibrating screen for wheat selection as described in claim 3, characterized in that: Both the first screening frame (21) and the second screening frame (31) are inclined. Both ends of the first screening frame (21) and the second screening frame (31) are fixedly connected to multiple springs (6). One end of each spring (6) is fixedly connected to the first screening frame (21) or the second screening frame (31), and the other end of each spring (6) is fixedly connected to the frame (1). A vibration motor (5) is fixedly connected to the lower end face of the second screening frame (31).

5. The rotary vibrating screen for wheat selection as described in claim 4, characterized in that: The lower end of the first screening frame (21) is provided with a first discharge port (23), which is used to discharge larger impurities after screening. The lower end of the second screening frame (31) is provided with a second discharge port (33), which is used to discharge wheat after screening. The collection bin (4) is used to collect smaller impurities screened out by the second screening unit (3). A third discharge port (41) is provided on one side of the collection bin (4), which is used to discharge smaller impurities screened out.

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