Oat straw threshing and screening device
By adding screening mechanism and multi-zone threshing structure in the oat straw threshing device and using slow mesh rotation, the problem of oat grains containing crushed straw, unsatisfactory threshing effect and prone to clogging of mesh holes is solved, and a purer oat grain collection and more efficient threshing process is achieved.
Patent Information
- Application Number
- CN202421678467.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing oat straw threshing device has the problem that oat grains contain crushed straw, poor threshing effect and prone to clogging of mesh holes, resulting in a reduced storage capacity of grain collection and low threshing efficiency.
An oat straw threshing screening device was designed. By adding a screening mechanism to the threshing mechanism, the oat grains and crushed straws were separated, and a spiral twisting dragon, rod drum and threshing nail were installed on the threshing rotor to form a multi-zone threshing structure. At the same time, the slow meshing cylinder driven by a motor is used to rotate to prevent mesh holes from being blocked.
Through the separation of the screening mechanism, the oat grains falling into the grain collection bin are purer and the storage volume is improved; the multi-zone threshing structure improves the threshing effect; the slow rotation of the mesh barrel prevents mesh holes from being blocked, ensuring the smooth threshing process.
Smart Images
Figure CN222776631U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a crop threshing device, in particular to an oat straw threshing device. Background Art
[0002] The existing oat straw threshing device has the following defects: first, the oat grains falling into the grain collecting bin contain broken straw, and due to the high impurity content, the storage capacity of the collected grains is reduced; second, after the threshing mechanism threshes the oat straw, oat grains still remain on the straw, so the threshing effect is not ideal and needs further improvement and enhancement; third, the mesh of the threshing mechanism is easily clogged, resulting in the accumulation of oat grains in the mesh cylinder, thereby affecting the normal threshing work. Utility Model Content
[0003] The utility model aims to provide an oat straw threshing and screening device, which separates oat grains and broken straws through a screening mechanism, so that the oat grains falling into a grain collecting bin are purer, thereby increasing the storage capacity of the oat grains.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] An oat straw threshing and screening device comprises a threshing frame, a threshing mechanism, a screening mechanism and a grain collecting bin. The threshing mechanism, the screening mechanism and the grain collecting bin are mounted on the threshing frame, the grain collecting bin is located below the screening mechanism, and the screening mechanism is located below the threshing mechanism.
[0006] Furthermore, the threshing mechanism includes a net drum, a threshing rotor, a net drum driving mechanism and a rotor driving mechanism. The threshing rotor is located in the net drum, one end of the net drum is an oat straw entry end, and the other end is a straw discharge end. The net drum driving mechanism is used to drive the net drum to rotate, and the rotor driving mechanism is used to drive the threshing rotor to rotate in the opposite direction to the rotation direction of the net drum. The threshing rotor includes a main shaft, on which a spiral auger and a rod-type drum are sequentially arranged.
[0007] Furthermore, the rod-type roller includes a left support frame, a right support frame and a plurality of threshing rods, the center hole on the left support frame and the center hole on the right support frame are interlaced and fixed on the main shaft, the left end of the threshing rod is fixed on the left support frame, and the right end of the threshing rod is fixed on the right support frame, and the plurality of threshing rods are evenly distributed along the circumferential direction of the left support frame and the right support frame.
[0008] Furthermore, threshing nails are distributed on a section of the threshing bar away from the spiral auger.
[0009] Furthermore, the threshing nail and the threshing rod are perpendicular to each other.
[0010] Furthermore, the net drum driving mechanism includes 4 friction rollers, 4 positioning wheels, a driving shaft, a passive shaft and a net drum driving motor, wherein 2 friction rollers are installed on the driving shaft, and the other 2 friction rollers are installed on the passive shaft, the driving shaft and the passive shaft are installed on the threshing machine frame, the net drum is horizontally supported on the 4 friction rollers, the 4 positioning wheels are installed on the top of the threshing machine frame and contact with the upper wall of the net drum, and the net drum driving motor is used to drive the driving shaft to rotate, the driving shaft drives the friction rollers, and the friction rollers drive the net drum to rotate.
[0011] Furthermore, the rotor driving mechanism includes a pair of meshing gears and a rotor driving motor, and the rotor driving motor drives the main shaft of the threshing rotor to rotate through the pair of meshing gears.
[0012] Furthermore, the screening mechanism includes a vibrating mesh screen, a screen bracket, a moving beam, a slider, a slide rod, a screening frame, a crank mechanism and a screening motor, the vibrating mesh screen is fixed on the screen bracket, the screen bracket is fixed on the moving beam, the two ends of the moving beam are respectively fixed on the two sliders, the two sliders are respectively arranged on the two slide rods, the two slide rods are horizontally installed on the screening frame, the screening motor drives the moving beam through the crank mechanism, and the moving beam drives the slider to move back and forth horizontally along the slide rod.
[0013] Furthermore, the vibrating mesh screen is installed obliquely on the screen support.
[0014] Furthermore, the left support frame and the right support frame are cross-shaped structures, and four threshing bars are provided.
[0015] The beneficial effects of the utility model are:
[0016] The present application adds a screening mechanism between the threshing mechanism and the grain collecting bin, and separates the oat grains from the broken straw through the screening mechanism, so that the oat grains falling into the grain collecting bin are purer, thereby increasing the storage capacity of the oat grains.
[0017] When the threshing rotor is modified in the present application, a spiral auger and a rod-type drum are arranged on the threshing rotor, and threshing nails are added to the rod-type drum, so that a friction threshing area, a rod-type impact threshing area and a nail-type kneading threshing area are formed on the threshing rotor, so that the oat stalks are subjected to friction threshing, impact extrusion threshing and kneading threshing in sequence, thereby greatly improving the threshing effect.
[0018] The mesh drum in the threshing mechanism of the present application is driven by a motor to rotate slowly, which can effectively prevent the mesh holes from being blocked, ensure that the oat grains can be discharged smoothly downward, and avoid the accumulation of oat grains in the mesh drum.
[0019] The screening mechanism of the present application adopts a sliding block and a sliding rod movement guide mode, so that the operation of the screening mechanism is more stable and the operation is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The utility model is further described with the aid of the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other accompanying drawings according to the following drawings without creative work:
[0021] Figure 1 It is a structural schematic diagram of the utility model;
[0022] Figure 2 It is a structural schematic diagram of the threshing rotor of the utility model;
[0023] Figure 3 for Figure 2 The schematic diagram of the assembly structure of the left support frame and the threshing rod is shown;
[0024] Figure 4 for Figure 1 The structural schematic diagram of the threshing mechanism shown;
[0025] Figure 5 for Figure 1 A schematic diagram of the structure of the screening mechanism shown;
[0026] Figure 6 for Figure 5 Top view shown.
[0027] In the figure: 1. threshing machine frame; 2. threshing mechanism; 3. screening mechanism; 4. grain collecting bin; 5. net drum; 6. main shaft; 7. spiral auger; 8. rod-type drum; 9. left support frame; 10. right support frame; 11. threshing rod; 12. threshing nail; 13. friction support wheel; 14. positioning wheel; 15. active shaft; 16. passive shaft; 17. net drum driving motor; 18. a pair of meshing gears; 19. rotor driving motor; 20. vibrating mesh screen; 21. screen bracket; 22. moving beam; 23. slider; 24. slide bar; 25. screening frame; 26. crank mechanism; 27. screening motor. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "forward", "reverse", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] like Figure 1 As shown, an oat straw threshing and screening device comprises a threshing frame 1, a threshing mechanism 2, a screening mechanism 3 and a grain collecting bin 4. The threshing mechanism 2, the screening mechanism 3 and the grain collecting bin 4 are mounted on the threshing frame 1, and the grain collecting bin 4 is located below the screening mechanism 3, and the screening mechanism 3 is located below the threshing mechanism 2. In this embodiment, a screening mechanism is added between the threshing mechanism and the grain collecting bin, and the oat grains and the broken straw are separated by the screening mechanism, so that the oat grains falling into the grain collecting bin are purer, so as to increase the storage capacity of the oat grains.
[0031] like Figure 2 , 3 As shown in FIG. 4 , the threshing mechanism 2 includes a net drum 5, a threshing rotor, a net drum driving mechanism and a rotor driving mechanism. The threshing rotor is located in the net drum 5. One end of the net drum 5 is an oat straw entry end, and the other end is a straw discharge end. The net drum driving mechanism is used to drive the net drum to rotate, and the rotor driving mechanism is used to drive the threshing rotor to rotate in the opposite direction to the rotation direction of the net drum. The threshing rotor includes a main shaft 6, on which a spiral auger 7 and a rod-type roller 8 are sequentially arranged.
[0032] The rod-type roller 8 includes a left support frame 9, a right support frame 10 and a plurality of threshing rods 11. The center hole on the left support frame 9 and the center hole on the right support frame 10 are fixed on the main shaft 6 through insertion. The left end of the threshing rod 11 is fixed on the left support frame 9, and the right end of the threshing rod 11 is fixed on the right support frame 10. The plurality of threshing rods 11 are evenly distributed along the circumferential direction of the left support frame 9 and the right support frame 10. Threshing nails 12 are distributed on the threshing rod 11 and at a section away from the spiral auger. The threshing nails 12 are perpendicular to the threshing rod 11. In this embodiment, the spiral auger and the rod-type roller are arranged on the threshing rotor, and the threshing nails are added to the rod-type roller, so that the friction threshing area, the rod-type impact threshing area and the nail-type kneading threshing area are formed on the threshing rotor, so that the oat stalks are subjected to friction threshing, impact extrusion threshing and kneading threshing in sequence, thereby greatly improving the threshing effect.
[0033] In this embodiment, the left support frame 9 and the right support frame 10 are cross-shaped structures, and four threshing bars 11 are provided.
[0034] The net cylinder driving mechanism includes 4 friction rollers 13, 4 positioning wheels 14, a driving shaft 15, a passive shaft 16 and a net cylinder driving motor 17, wherein 2 friction rollers 13 are mounted on the driving shaft 15, and the other 2 friction rollers 13 are mounted on the passive shaft 16, the driving shaft 15 and the passive shaft 16 are mounted on the threshing frame 1, the net cylinder 5 is horizontally supported on the 4 friction rollers 13, the 4 positioning wheels 14 are mounted on the top of the threshing frame 1 and contact the upper cylinder wall of the net cylinder 5, the net cylinder driving motor 17 is used to drive the driving shaft 15 to rotate, the driving shaft 15 drives the friction rollers 13, and the friction rollers 13 drive the net cylinder 5 to rotate. The net cylinder 5 is driven by the motor and rotates slowly, which can effectively prevent the mesh from being blocked, ensure that the oat grains can be discharged smoothly downward, and avoid the accumulation of oat grains in the net cylinder.
[0035] The rotor driving mechanism includes a pair of meshing gears 18 and a rotor driving motor 19 . The rotor driving motor 19 drives the main shaft 6 of the threshing rotor to rotate through the pair of meshing gears 18 .
[0036] like Figure 5 , 6 As shown, the screening mechanism 3 includes a vibrating mesh screen 20, a screen support 21, a moving beam 22, a slider 23, a slide bar 24, a screening frame 25, a crank mechanism 26 and a screening motor 27. The vibrating mesh screen 20 is fixed on the screen support 21, the screen support 21 is fixed on the moving beam 22, the two ends of the moving beam 22 are respectively fixed on the two sliders 23, the two sliders 23 are respectively arranged on the two slide bars 24, the two slide bars 24 are horizontally mounted on the screening frame 25, the screening motor 27 drives the moving beam 22 through the crank mechanism 26, the moving beam 22 drives the slider 23 to move reciprocatingly along the slide bar 24, thereby driving the vibrating mesh screen 20 to move reciprocatingly horizontally, and the vibrating mesh screen 20 is obliquely mounted on the screen support 21. The screening mechanism of this embodiment adopts a slider and slide bar moving guide mode, so that the operation of the screening mechanism is more stable and the work is safer and more reliable.
[0037] Working principle: oat straw is transported to the oat straw entry end of the mesh cylinder 5 via a conveyor belt, and the spiral auger 7 at the oat straw entry end pushes the oat straw into the mesh cylinder 5. In the mesh cylinder 5, the oat straw is separated from the straw by the friction between the mesh cylinder 5 and the spiral auger 7, and the oat grains and broken straw fall onto the vibrating mesh screen 20 below through the mesh cylinder 5. The remaining straw moves along the mesh cylinder 5 and passes through the rod-type roller 8, which threshes the oat straw again. When the straw moves to the threshing nails 12, the threshing nails 12 rub the straw to further improve the threshing quality, and the threshed straw is discharged from the straw discharge port.
[0038] The vibrating mesh screen 20 separates the oat grains and the broken straws. The broken straws move along the lowermost end of the vibrating mesh screen 20 , and the oat grains pass through the vibrating mesh screen 20 and fall downward into the grain collecting bin 4 .
[0039] In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without contradiction. Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the utility model.
Claims
1. An oat straw threshing and screening device, characterized in that: The invention comprises a threshing machine frame, a threshing mechanism, a screening mechanism and a grain collecting bin, wherein the threshing mechanism, the screening mechanism and the grain collecting bin are installed on the threshing machine frame, the grain collecting bin is located below the screening mechanism, and the screening mechanism is located below the threshing mechanism.
2. The oat straw threshing and screening device according to claim 1, characterized in that: The threshing mechanism comprises a net drum, a threshing rotor, a net drum driving mechanism and a rotor driving mechanism. The threshing rotor is located in the net drum. One end of the net drum is an oat straw entry end, and the other end is a straw discharge end. The net drum driving mechanism is used to drive the net drum to rotate. The rotor driving mechanism is used to drive the threshing rotor to rotate in the opposite direction to the rotation direction of the net drum. The threshing rotor comprises a main shaft, on which a spiral auger and a rod-type drum are sequentially arranged.
3. The oat straw threshing and screening device according to claim 2, characterized in that: The rod-type roller comprises a left support frame, a right support frame and a plurality of threshing rods, the center hole on the left support frame and the center hole on the right support frame are interlaced and fixed on the main shaft, the left end of the threshing rod is fixed on the left support frame, and the right end of the threshing rod is fixed on the right support frame, and the plurality of threshing rods are evenly distributed along the circumferential direction of the left support frame and the right support frame.
4. The oat straw threshing and screening device according to claim 3, characterized in that: Threshing nails are distributed on a section of the threshing bar away from the spiral auger.
5. The oat straw threshing and screening device according to claim 4, characterized in that: The threshing nail and the threshing rod are perpendicular to each other.
6. The oat straw threshing and screening device according to claim 2, characterized in that: The net drum driving mechanism includes 4 friction rollers, 4 positioning wheels, a driving shaft, a passive shaft and a net drum driving motor, wherein 2 friction rollers are installed on the driving shaft, and the other 2 friction rollers are installed on the passive shaft, the driving shaft and the passive shaft are installed on the threshing machine frame, the net drum is horizontally supported on the 4 friction rollers, the 4 positioning wheels are installed on the top of the threshing machine frame and contact with the upper wall of the net drum, the net drum driving motor is used to drive the driving shaft to rotate, the driving shaft drives the friction rollers, and the friction rollers drive the net drum to rotate.
7. The oat straw threshing and screening device according to claim 2, characterized in that: The rotor driving mechanism comprises a pair of meshing gears and a rotor driving motor. The rotor driving motor drives the main shaft of the threshing rotor to rotate through the pair of meshing gears.
8. The oat straw threshing and screening device according to claim 1, characterized in that: The screening mechanism includes a vibrating mesh screen, a screen bracket, a moving beam, a slider, a slide bar, a screening frame, a crank mechanism and a screening motor. The vibrating mesh screen is fixed on the screen bracket, the screen bracket is fixed on the moving beam, both ends of the moving beam are respectively fixed on the two sliders, the two sliders are respectively arranged on the two slide bars, the two slide bars are horizontally installed on the screening frame, the screening motor drives the moving beam through the crank mechanism, and the moving beam drives the slider to move back and forth horizontally along the slide bar.
9. The oat straw threshing and screening device according to claim 8, characterized in that: The vibrating mesh screen is installed obliquely on the screen support.
10. The oat straw threshing and screening device according to claim 3, characterized in that: The left support frame and the right support frame are cross-shaped structures, and four threshing rods are provided.