Screening device of threshing machine
By designing vibration screening of movable filter plates and pinning mechanisms in the thresher, combined with the separation of screen holes of conveying paddles and screening cylinders, the problem of difficulty in removing large impurities in the prior art is solved, and the efficiency of grain screening is significantly improved.
Patent Information
- Application Number
- CN202420731350.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2024-12-27
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing threshing machine screening device is difficult to effectively remove large impurities when screening grains, resulting in insufficiency of screening.
A threshing machine screening device is designed, including a movable filter plate and a pinch mechanism, which realizes vibration screening of the filter plate through a slide rod and a return spring, and combines a rotatable conveying paddle and screening cylinder to use the screen hole to perform grain. Further separation.
Effective separation of smaller and larger impurities in grain is achieved, and the efficiency of grain screening is improved.
Smart Images
Figure CN222241339U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of threshers, in particular to a thresher screening device. Background Art
[0002] A thresher is a harvesting machine that can separate the grains of crops from their stalks. In the grain production process, it is necessary to screen out various sizes of impurities such as dirt, dust, gravel, bran, etc. in the grain. Nowadays, many thresher screening devices in China mostly use vibrating screens for screening, which can separate the smaller particles of impurities mixed in the grain. However, there are still larger impurities mixed in the grain, so the larger impurities cannot be removed, thereby reducing the screening efficiency. In response to the above problems, a solution is proposed below. Utility Model Content
[0003] The utility model aims to provide a thresher screening device, which has the advantage of high screening efficiency.
[0004] The above technical objectives of the utility model are achieved through the following technical solutions:
[0005] The filter press of the invention can be used to filter the filter screen, and the filter screen can be used to filter the filter screen.
[0006] Preferably, the pushing mechanism includes two cams, a rotatable shaft is passed through the first screening box, and the cam is fixed on the shaft and located below the slide bar, a motor is installed on one side of the box body, and the output shaft of the motor passes through the box body and is fixedly connected to one end of the shaft.
[0007] Preferably, a driving wheel is provided on one side of the first screening box, one end of the rotating shaft passes through the first screening box and is fixedly connected to one side of the driving wheel, a driven wheel is provided on one side of the second screening box, one end of the conveying paddle passes through the second screening box and is fixedly connected to one end of the driven wheel, and a belt is sleeved between the driving wheel and the driven wheel.
[0008] Preferably, a feeding pipe is provided at the upper end of the box body, and the lower end of the feeding pipe is connected to the interior of the first screening box, the lower end of the first screening box is connected to a waste pipe, and a slidable waste box and a finished product box are respectively provided at the front end of the box body, and the waste box is located below the waste pipe, and the finished product box is located below the screening cylinder.
[0009] Preferably, the front end of the box body is provided with an openable first inspection door and a second inspection door, respectively, and the first inspection door and the second inspection door are communicated with the inside of the first screening box and the second screening box, respectively.
[0010] The beneficial effects of the utility model are:
[0011] 1. Unscreened grain can fall into the upper end of the filter plate through the feeding pipe, and then the sliding rod can be pushed by the pushing mechanism to make the sliding rod slide upward along the protrusion, thereby driving the filter plate to move upward. At this time, the reset spring is squeezed to generate elastic force, and then the reset spring can drive the sliding rod back to the initial position. This process is repeated to achieve the up and down movement of the filter plate, and the grain can be preliminarily screened by the vibration of the filter plate, so that smaller particles of impurities mixed in the grain can fall to the bottom of the first screening box.
[0012] 2. After the preliminary screening of the grain, it can fall into the screening cylinder through the feed pipe. At this time, the grain can be transported by the rotation of the conveying paddle. At the same time, the grain can fall out through the sieve holes on the surface of the screening cylinder, thereby separating the larger impurities in the grain. Finally, the larger impurities mixed in the grain can be transported by the conveying paddle and discharged out of the box through the discharge pipe. Therefore, the screening of the grain can be completed, thereby improving the efficiency of grain screening. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of an embodiment;
[0014] Figure 2 Schematic diagram of the internal structure of the embodiment.
[0015] Figure numerals: 1. box body; 2. first screening box; 3. filter plate; 4. bump; 5. slide bar; 6. return spring; 7. push mechanism; 8. second screening box; 9. screening cylinder; 10. conveying paddle; 11. sieve hole; 12. feed pipe; 13. discharge pipe; 14. cam; 15. rotating shaft; 16. motor; 17. driving wheel; 18. driven wheel; 19. belt; 20. feeding pipe; 21. waste pipe; 22. waste box; 23. finished product box; 24. first inspection door; 25. second inspection door. DETAILED DESCRIPTION
[0016] The following is only a preferred embodiment of the present invention, and the protection scope is not limited to this embodiment. All technical solutions under the concept of the present invention should belong to the protection scope of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0017] like Figure 1 to Figure 2 As shown, a thresher screening device includes a box body 1, a first screening box 2 is fixedly provided inside the box body 1, a feeding pipe 20 is provided at the upper end of the box body 1, and the lower end of the feeding pipe 20 is connected with the inside of the first screening box 2, and unscreened grains can be put into the box body 1 through the feeding pipe 20, so that the grains are located in the first screening box 2.
[0018] The filter plate 3 is provided with a movable filter plate 3, and two protrusions 4 are fixed on the inner wall of the first screening box 2. Each protrusion 4 is respectively penetrated by a sliding rod 5, and the upper end of the sliding rod 5 is fixedly connected with the lower end of the filter plate 3, and a return spring 6 is penetrated on the sliding rod 5, and the return spring 6 is connected between the lower end of the protrusion 4 and the tail end of the sliding rod 5. A pushing mechanism 7 is provided in the first screening box 2, and the pushing mechanism 7 cooperates with the two sliding rods 5, and the unscreened grain can fall into the upper end of the filter plate 3 through the feeding pipe 20, and then the sliding rod 5 can be pushed by the pushing mechanism 7 to make the sliding rod 5 slide upward along the protrusion 4, thereby driving the filter plate 3 to move upward. At this time, the return spring 6 is squeezed to generate elastic force, and then the sliding rod 5 can be driven back to the initial position by the return action of the return spring 6, and so on and so forth, so that the filter plate 3 can be moved up and down, and the grain can be preliminarily screened by the vibration of the filter plate 3, so that the smaller particles of impurities mixed in the grain can fall to the bottom of the first screening box 2.
[0019] The pushing mechanism 7 includes two cams 14. A rotatable shaft 15 is passed through the first screening box 2, and the cam 14 is fixed on the shaft 15 and is located below the slide bar 5. A motor 16 is installed on one side of the box body 1. The output shaft of the motor 16 passes through the box body 1 and is fixedly connected to one end of the shaft 15. The rotation of the motor 16 can drive the shaft 15 to rotate, thereby driving the two cams 14 to rotate. When the more protruding end of the cam 14 contacts the lower end of the slide bar 5, as the cam 14 continues to rotate, it can drive the slide bar 5 to move upward. Conversely, when the more protruding end of the cam 14 is separated from the slide bar 5, the slide bar 5 can be driven back to the initial position by the reset action of the reset spring 6. This repetition can realize the up and down vibration of the filter plate 3.
[0020] The second screening box 8 is fixedly provided inside the box body 1, and a screening cylinder 9 is fixedly provided inside the second screening box 8, and a rotatable conveying paddle 10 is passed through the screening cylinder 9. A driving wheel 17 is provided on one side of the first screening box 2, and one end of the rotating shaft 15 passes through the first screening box 2 and is fixedly connected to one side of the driving wheel 17, and the driving wheel 17 can be driven to rotate by the rotation of the rotating shaft 15. A driven wheel 18 is provided on one side of the second screening box 8, and one end of the conveying paddle 10 passes through the second screening box 8 and is fixedly connected to one end of the driven wheel 18. A belt 19 is sleeved between the driving wheel 17 and the driven wheel 18, and the belt 19 can realize the simultaneous rotation of the driven wheel 18, and finally the conveying paddle 10 can be rotated.
[0021] A plurality of sieve holes 11 are provided on the surface of the screening cylinder 9, a feed pipe 12 is connected between the first screening box 2 and the screening cylinder 9, a discharge pipe 13 is provided on one side of the box body 1, and the discharge pipe 13 is communicated with the interior of the screening cylinder 9. After the preliminary screening of the grain, it can fall into the screening cylinder 9 through the feed pipe 12, at which time the grain can be transported by the rotation of the conveying paddle 10, and at the same time, the grain can fall out through the sieve holes 11 on the surface of the screening cylinder 9, thereby separating the larger impurities in the grain, and finally the larger impurities mixed in the grain can be transported by the conveying paddle 10 and discharged to the outside of the box body 1 through the discharge pipe 13, so that the screening of the grain can be completed, thereby improving the efficiency of grain screening.
[0022] A waste pipe 21 is connected to the lower end of the first screening box 2, and a slidable waste box 22 and a finished product box 23 are respectively provided at the front end of the box body 1, and the waste box 22 is located below the waste pipe 21, and the finished product box 23 is located below the screening cylinder 9. Smaller impurities separated by the filter plate 3 can fall into the waste box 22 through the waste pipe 21 for collection, so that the waste box 22 can be taken out for processing later. Similarly, the grain screened by the screening cylinder 9 can fall into the finished product box 23 for collection, so as to facilitate subsequent processing.
[0023] The front end of the box body 1 is respectively provided with an openable first inspection door 24 and a second inspection door 25, and the first inspection door 24 and the second inspection door 25 are respectively connected to the inside of the first screening box 2 and the second screening box 8. When the device is repeatedly operated, the first inspection door 24 and the second inspection door 25 can be opened to facilitate maintenance and cleaning of the inside of the first screening box 2 and the second screening box 8 to ensure efficient screening work of the device.
[0024] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A thresher screening device, characterized in that: The invention comprises a box body (1), wherein a first screening box (2) is fixedly arranged inside the box body (1), a movable filter plate (3) is arranged inside the first screening box (2), two protrusions (4) are fixedly arranged on the inner wall of the first screening box (2), each of the protrusions (4) is respectively provided with a slide bar (5), and the upper end of the slide bar (5) is fixedly connected to the lower end of the filter plate (3), a return spring (6) is provided on the slide bar (5), and the return spring (6) is connected between the lower end of the protrusion (4) and the tail end of the slide bar (5), and a top motor is arranged inside the first screening box (2). The invention relates to a machine tool comprising a plurality of screen elements (10) and a plurality of screen holes (11). The machine tool comprises a plurality of screen elements (10) and a plurality of screen holes (11). The machine tool comprises a plurality of screen elements (10) and a plurality of screen holes (11). The machine tool comprises a plurality of screen elements (10) and a plurality of screen holes (11). The machine tool comprises a plurality of screen elements (10) and a plurality of screen holes (11). The machine tool comprises a plurality of screen elements (10) and a plurality of screen elements ...
2. A thresher screening device according to claim 1, characterized in that: The pushing mechanism (7) comprises two cams (14). A rotatable shaft (15) is passed through the first screening box (2). The cam (14) is fixed on the shaft (15) and is located below the slide bar (5). A motor (16) is installed on one side of the box body (1). The output shaft of the motor (16) passes through the box body (1) and is fixedly connected to one end of the shaft (15).
3. A thresher screening device according to claim 2, characterized in that: A driving wheel (17) is provided on one side of the first screening box (2); one end of the rotating shaft (15) passes through the first screening box (2) and is fixedly connected to one side of the driving wheel (17); a driven wheel (18) is provided on one side of the second screening box (8); one end of the conveying paddle (10) passes through the second screening box (8) and is fixedly connected to one end of the driven wheel (18); a belt (19) is sleeved between the driving wheel (17) and the driven wheel (18).
4. A thresher screening device according to claim 3, characterized in that: A feeding pipe (20) is provided at the upper end of the box body (1), and the lower end of the feeding pipe (20) is connected to the interior of the first screening box (2), and the lower end of the first screening box (2) is connected to a waste pipe (21), and a slidable waste box (22) and a finished product box (23) are respectively penetrated through the front end of the box body (1), and the waste box (22) is located below the waste pipe (21), and the finished product box (23) is located below the screening cylinder (9).
5. A thresher screening device according to claim 4, characterized in that: The front end of the box body (1) is provided with an openable first inspection door (24) and a second inspection door (25), and the first inspection door (24) and the second inspection door (25) are respectively connected to the inside of the first screening box (2) and the second screening box (8).