Adjustable shutter and grain processing device

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to an adjustable shutter and a grain processing device. The utility model provides an adjustable shutter. The adjustable shutter comprises a frame, a driving shaft, linkage strips, driving blades and driven blades. In the using process, the driving shaft is rotated, the driving shaft drives the driving blades to rotate, the driving blades drive the linkage strips to move, the linkage strips drive the driven blades to rotate around the joints of the driven blades and the supporting plates, the angles of the driving blades and the driven blades are changed along with rotation, and the technical effects of synchronous adjustment and easy adjustment are achieved. Meanwhile, the driving blades and the driven blades of the adjustable louver do not need to be welded with other assemblies, the defect of welding deformation is avoided, and when the angles of the blades of the louver are adjusted, the resistance of hole site decentration caused by welding deformation is reduced. The grain processing device provided by the utility model also has the technical effects due to the fact that the grain processing device comprises the adjustable blind window.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and in particular to an adjustable shutter and a grain processing device. Background Art

[0002] The shutter is an important component of the compound specific gravity cleaner. Usually, it is set under the specific gravity table to achieve the effect of uniform air supply. The blade angle of the shutter directly affects the specific gravity effect. It is very important to design an adjustable shutter. Currently, adjustable shutters are more common in grain dryers.

[0003] In the related art, usually adjustable blinds are mostly welded and riveted, and the construction is time-consuming and labor-intensive due to the numerous components. If the components on the blinds are welded, the blinds may be deformed during welding, resulting in eccentric holes and difficulty in adjustment.

[0004] However, in the selected corn thresher and compound gravity cleaner, most of them use non-adjustable shutters. When the gravity table requires angle adjustment of the air supply, the non-adjustable shutters cannot meet the demand, because there are dozens of shutter blades on the fan. If riveting is used, the workload is too large; if welding is used, deformation makes the hole position non-concentric and difficult to adjust; it is also inconvenient to replace damaged and deformed blades. Utility Model Content

[0005] The present application provides an adjustable shutter and a grain processing device, which can effectively solve the above or other potential technical problems.

[0006] The first aspect of the present application is to provide an adjustable blind, comprising a frame, a driving shaft, a linkage bar, an active blade and a driven blade; the driving shaft passes through the opposite sides of the frame and is rotatably connected to the frame; the driving shaft and the active blade are fixedly connected through a linkage kit, the linkage kit is rotatably connected to the linkage bar, and the active blade is rotatably connected to the linkage bar; the driven blade is rotatably connected to the support plate in the frame and the linkage bar; the driving shaft is rotated under the action of an external force, driving the linkage bar to approach or move away from the support plate of the frame, and the linkage bar drives the driven blade to rotate around the connection between the driven blade and the support plate.

[0007] The adjustable Venetian blinds provided by the present application include a frame, a driving shaft, a linkage bar, an active blade, and a driven blade. During use, the driving shaft is rotated, the active shaft drives the active blade to rotate, the active blade drives the linkage bar to move, and the linkage bar drives the driven blade to rotate around the connection between the driven blade and the support plate, thereby realizing the rotation of the driven blade, thereby realizing the change of angle of the active blade and the driven blade as the rotation, thereby realizing the adjustment of the angle of the air supply, and achieving the technical effects of synchronous adjustment and easy adjustment. At the same time, the active blades and driven blades of the adjustable Venetian blinds provided by the present application do not need to be welded to other components, so the defects of welding deformation can be effectively avoided, and at the same time, the resistance of the non-concentric hole position caused by welding deformation is reduced when the Venetian blinds adjust the angle of the blades.

[0008] In an optional embodiment according to the first aspect, the frame includes a top frame, a bottom frame, a left frame and a right frame; the top frame and the bottom frame are arranged opposite to each other, and the left frame and the right frame are arranged opposite to each other; the top frame and the bottom frame are respectively connected to the two ends of the left frame and the right frame, so that the frame as a whole constitutes a rectangular frame; the driving shaft passes through the top frame and the bottom frame; and the two sides of the support plate are respectively connected to the left frame and the right frame.

[0009] In an optional embodiment according to the first aspect, the active blades include a top active blade, a bottom active blade and a middle active blade; both ends of the top active blade, the bottom active blade and the middle active blade are protruding with connecting plates; the connecting plates are provided with through holes for the driving shaft to pass through; the connecting plates at both ends of the middle active blade are provided with connecting holes for connecting to the linkage bar; the connecting plates of the top active blade and the bottom active blade on the side close to the middle active blade are provided with connecting holes for connecting to the linkage bar.

[0010] According to an optional embodiment of the first aspect, the number of the middle active blades is at least two; the connecting pieces at both ends of the middle active blade are connected to the linkage bar by bolts, and are rotatably connected; the connecting pieces of the top active blade and the bottom active blade close to the side of the middle active blade are connected to the linkage bar by bolts, and are rotatably connected.

[0011] In an optional embodiment according to the first aspect, the driven blades include a top driven blade, a bottom driven blade and a middle driven blade; both ends of the top driven blade, the bottom driven blade and the middle driven blade are protruding with connecting pieces; the connecting pieces at both ends of the middle driven blade are provided with connecting holes for connecting to the linkage bar and connecting holes for connecting to the support plate; the connecting pieces of the top driven blade and the bottom driven blade on the side close to the middle driven blade are provided with connecting holes for connecting to the linkage bar and connecting holes for connecting to the support plate; the connecting piece of the top driven blade on the side away from the middle driven blade is provided with a connecting hole rotatably connected to the top frame; the connecting piece of the bottom driven blade on the side away from the middle driven blade is provided with a connecting hole rotatably connected to the bottom frame.

[0012] In an optional embodiment according to the first aspect, the number of the middle driven blades is at least two; the connecting pieces at both ends of the middle driven blades are connected to the linkage bar and the support plate by bolts, and are rotatably connected; the connecting pieces of the top driven blades and the bottom driven blades close to the middle driven blades are connected to the linkage bar and the support plate by bolts; the connecting piece of the top driven blades away from the middle driven blades is connected to the top frame by a cross countersunk bolt; the connecting piece of the bottom driven blades away from the middle driven blades is connected to the bottom frame by a cross countersunk bolt.

[0013] In an optional embodiment according to the first aspect, the active blade is arranged at a central position of the frame, the active shaft is arranged at a central axis position of the frame; and the driven blade is arranged on opposite sides of the active blade.

[0014] In an optional embodiment according to the first aspect, the linkage kit includes a sleeve and a connecting plate, the sleeve is protruding at one end of the connecting plate, the driving shaft passes through the sleeve, and is fixedly connected to the sleeve by a fastening bolt; the end of the connecting plate away from the sleeve is connected to the linkage bar by bolts.

[0015] In an optional embodiment according to the first aspect, the active blades and the driven blades are steel blades or plastic blades.

[0016] A second aspect of the present application also provides a grain processing device, comprising the above-mentioned adjustable shutter.

[0017] The grain processing device provided in the embodiment of the present application, because it includes the above-mentioned adjustable shutters, also has the above-mentioned technical effects of synchronous adjustment, easy adjustment and reduced resistance.

[0018] Advantages of additional aspects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

[0020] Figure 1 A schematic diagram of the overall structure of the adjustable blinds provided in an embodiment of the present application at a first viewing angle;

[0021] Figure 2 A schematic diagram of the overall structure of the adjustable blinds provided in an embodiment of the present application at a second viewing angle;

[0022] Figure 3 for Figure 2 The local enlarged view of point I in the middle;

[0023] Figure 4 A schematic diagram of the overall structure of the adjustable blinds provided in an embodiment of the present application at a third viewing angle;

[0024] Figure 5 for Figure 4 A partial enlarged view of position II in the middle;

[0025] Figure 6 for Figure 4 A partial enlarged view of point III in the middle;

[0026] Figure 7 A schematic diagram of the structure of the top active leaf of the adjustable blinds provided in an embodiment of the present application;

[0027] Figure 8 A schematic diagram of the structure of the middle active leaf of the adjustable blinds provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of the structure of the bottom active leaf of the adjustable blinds provided in an embodiment of the present application;

[0029] Fig.10 A schematic diagram of the structure of the top driven blade of the adjustable shutter provided in an embodiment of the present application;

[0030] Fig.11 A schematic diagram of the structure of the middle driven blade of the adjustable shutter provided in an embodiment of the present application;

[0031] Fig.12 A schematic diagram of the structure of the bottom driven blade of the adjustable shutter provided in an embodiment of the present application;

[0032] Fig.13 A schematic structural diagram of a frame of an adjustable blind provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 10. Adjustable blinds; 11. Frame; 111. Support plate; 112. Top frame; 113. Bottom frame; 114. Left frame; 115. Right frame; 12. Active shaft; 13. Linkage bar; 14. Active blades; 141. Top active blades; 142. Bottom active blades; 143. Middle active blades; 144. Connecting pieces; 145. Through holes; 146. Connecting holes; 147. Bolts; 15. Driven blades; 151. Top driven blades; 152. Bottom driven blades; 153. Middle driven blades; 154. Cross countersunk bolts; 16. Linkage kit; 161. Sleeve; 162. Connecting plate; 163. Fastening bolts. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "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 application 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 application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0040] In the related technology, usually most of the adjustable louvers are welded and riveted, and the construction is time-consuming and laborious with numerous components. If the components on the louver blades are welded, it will also cause the louver blades to deform during welding, resulting in the holes being non-concentric and difficult to adjust. In the selected corn thresher and compound gravity cleaning machine, most of them use non-adjustable louvers. When the gravity table requires the wind to be adjusted at an angle, the non-adjustable louvers cannot meet the demand, because there are dozens of louvers on the fan. If riveting is used, the workload is too large; if welding is used, deformation makes the holes non-concentric and difficult to adjust; it is also inconvenient to replace damaged and deformed blades.

[0041] In view of this, the adjustable blinds provided in the embodiment of the present application include a frame, a driving shaft, a linkage bar, an active blade and a driven blade; the driving shaft runs through the opposite sides of the frame and is rotatably connected to the frame; the driving shaft and the active blade are fixedly connected through a linkage kit, the linkage kit is rotatably connected to the linkage bar, and the active blade is rotatably connected to the linkage bar; the driven blade is rotatably connected to the support plate in the frame and the linkage bar; the driving shaft is rotated under the action of an external force, driving the linkage bar to approach or move away from the support plate of the frame, and the linkage bar drives the driven blade to rotate around the connection between the driven blade and the support plate. The adjustable blinds provided in the present application include a frame, a driving shaft, a linkage bar, an active blade and a driven blade. During use, the active shaft is rotated, the active shaft drives the active blade to rotate, the active blade drives the linkage bar to move, and the linkage bar drives the driven blade to rotate around the connection between the driven blade and the support plate, thereby realizing the rotation of the driven blade, thereby realizing the change of angle of the active blade and the driven blade as they rotate, thereby realizing the adjustment of the angle of the air supply, and achieving the technical effects of synchronous adjustment and easy adjustment. At the same time, the active blades and driven blades of the adjustable blinds provided by the present application do not need to be welded with other components, so the defects of welding deformation can be effectively avoided, and at the same time, when the blinds adjust the angle of the blades, the resistance of the non-concentric hole position caused by welding deformation is reduced.

[0042] Please refer to Figures 1 to 13 The adjustable shutter 10 provided in the embodiment of the present application includes a frame 11, a driving shaft 12, a linkage bar 13, an active blade 14 and a driven blade 15; the driving shaft 12 passes through the opposite sides of the frame 11 and is rotatably connected to the frame 11; the driving shaft 12 and the active blade 14 are fixedly connected through a linkage kit 16, the linkage kit 16 is rotatably connected to the linkage bar 13, and the active blade 14 is rotatably connected to the linkage bar 13; the driven blade 15 is rotatably connected to the support plate 111 in the frame 11 and the linkage bar 13; the driving shaft 12 is rotated under the action of an external force, driving the linkage bar 13 to approach or move away from the support plate 111 of the frame 11, and the linkage bar 13 drives the driven blade 15 to rotate around the connection between the driven blade 15 and the support plate 111.

[0043] The adjustable venetian blind 10 provided in the present application includes a frame 11, a driving shaft 12, a linkage bar 13, an active blade 14 and a driven blade 15. During use, the driving shaft 12 is rotated, the driving shaft 12 drives the active blade 14 to rotate, the active blade 14 drives the linkage bar 13 to move, and the linkage bar 13 drives the driven blade 15 to rotate around the connection between the driven blade 15 and the support plate 111, thereby realizing the rotation of the driven blade 15, thereby realizing the change of angle of the active blade 14 and the driven blade 15 as the rotation changes, thereby realizing the adjustment of the angle of the wind supply, and realizing the technical effects of synchronous adjustment and easy adjustment. At the same time, the active blade 14 and the driven blade 15 of the adjustable venetian blind 10 provided in the present application do not need to weld other components, so the defects of welding deformation can be effectively avoided, and at the same time, the resistance of the hole position eccentricity caused by welding deformation is reduced when the venetian blind adjusts the angle of the blade.

[0044] In an optional exemplary embodiment, the frame 11 includes a top frame 112, a bottom frame 113, a left frame 114 and a right frame 115; the top frame 112 and the bottom frame 113 are arranged opposite to each other, and the left frame 114 and the right frame 115 are arranged opposite to each other; the top frame 112 and the bottom frame 113 are respectively connected to the two ends of the left frame 114 and the right frame 115, so that the frame 11 as a whole constitutes a rectangular frame; the driving shaft 12 passes through the top frame 112 and the bottom frame 113; and the two sides of the support plate 111 are respectively connected to the left frame 114 and the right frame 115.

[0045] It should be noted that, specifically, in this embodiment, the frame 11 includes a top frame 112, a bottom frame 113, a left frame 114, and a right frame 115; the frame 11 as a whole constitutes a rectangular frame. It is understandable that setting the frame 11 as a rectangular frame can make the processing of the active blades 14 and the driven blades 15 more convenient. It is understandable that the specific shape of the frame 11 is not limited here, and in other specific embodiments, the frame 11 can also be set to other shapes according to the specific needs of the user.

[0046] Specifically, the driving shaft 12 passes through the top frame 112 and the bottom frame 113; the two sides of the support plate 111 are respectively connected to the left frame 114 and the right frame 115. The support plate 111 can strengthen the strength of the frame 11 on the one hand, and support the driving blade 14 and the driven blade 15 on the other hand.

[0047] In an optional exemplary embodiment, the active blade 14 includes a top active blade 141, a bottom active blade 142 and a middle active blade 143; both ends of the top active blade 141, the bottom active blade 142 and the middle active blade 143 are protrudingly provided with connecting pieces 144; the connecting pieces 144 are provided with through holes 145 for the active shaft 12 to pass through; the connecting pieces 144 at both ends of the middle active blade are provided with connecting holes 146 for connecting to the linkage bar 13; the connecting pieces 144 of the top active blade 141 and the bottom active blade 142 close to the middle active blade 143 are provided with connecting holes 146 for connecting to the linkage bar 13.

[0048] It should be noted that, specifically, in this embodiment, the active blades 14 include top active blades 141, bottom active blades 142, and middle active blades 143. During the connection process, support plates 111 are provided between the top active blades 141, the middle active blades 143, and the bottom active blades 142, and linkage bars 13 are provided at each support plate 111, so that the active shaft 12 drives the active blades 14, the active blades 14 drive the linkage bars 13 to move, and the linkage bars 13 drive the driven blades 15 to rotate.

[0049] Specifically, connecting pieces 144 are protruding from both ends of the top active blade 141, the bottom active blade 142 and the middle active blade 143; the connecting pieces 144 are provided with through holes 145 for the active shaft 12 to pass through; the active shaft 12 can pass through the connecting piece 144 and connect with each active blade to achieve driving.

[0050] Specifically, the connecting pieces 144 at both ends of the middle active blade are provided with connecting holes 146 for connecting with the linkage bar 13; the connecting pieces 144 of the top active blade 141 and the bottom active blade 142 near the middle active blade 143 are provided with connecting holes 146 for connecting with the linkage bar 13. This is to enable the active blade 14 to better drive the linkage bar 13 connected thereto, and then enable the linkage bar 13 to drive the driven blade 15 connected thereto. This enables the driven blade 15 to be linked with the active blade 14, and better achieves synchronous regulation.

[0051] In an optional exemplary embodiment, the number of the middle active blades 143 is at least two. It is understandable that the number of the middle active blades 143 is not limited to a specific value, and can be adaptively adjusted according to the specific needs of the user for the blinds. In this embodiment, the number of the middle active blades 143 is two, and the two middle active blades 143 are arranged along the axial direction of the driving shaft 12, and a support plate 111 is provided between the two middle active blades 143, and a linkage bar 13 is provided accordingly.

[0052] Specifically, the connecting pieces 144 at both ends of the middle active blade 143 are rotatably connected to the linkage bar 13 via bolts 147. Such a configuration is conducive to the active blade driving the linkage bar 13 to move.

[0053] Exemplarily, the bolt 147 provided in this embodiment is a hexagonal bolt.

[0054] Specifically, the connecting piece 144 of the top active blade 141 and the bottom active blade 142 near the middle active blade 143 is connected to the linkage bar 13 through a bolt 147, and is rotatably connected. This arrangement facilitates the linkage bar 13 near the top active blade 141 and the bottom active blade 142 to rotate, thereby driving the driven blade 15 connected to the linkage bar 13 to rotate, and realizing the linkage between the active blade 14 and the driven blade 15.

[0055] In an optional exemplary embodiment, the driven blade 15 includes a top driven blade 151, a bottom driven blade 152 and a middle driven blade 153; both ends of the top driven blade 151, the bottom driven blade 152 and the middle driven blade 153 are protruding with a connecting piece 144; the connecting pieces 144 at both ends of the middle driven blade are provided with a connecting hole 146 for connecting to the linkage bar 13 and a connecting hole 146 for connecting to the support plate 111; the top driven blade 151 and the bottom driven blade 152 are protruding with a connecting piece 144; the connecting pieces 144 at both ends of the middle driven blade are provided with a connecting hole 146 for connecting to the linkage bar 13 and a connecting hole 146 for connecting to the support plate 111; A connecting hole 146 for connecting to the linkage bar 13 and a connecting hole 146 for connecting to the support plate 111 are provided on the connecting piece 144 close to the side of the middle driven blade 153; a connecting hole 146 rotatably connected to the top frame 112 is provided on the connecting piece 144 of the top driven blade 151 away from the side of the middle driven blade 153; a connecting hole 146 rotatably connected to the bottom frame 113 is provided on the connecting piece 144 of the bottom driven blade 152 away from the side of the middle driven blade 153.

[0056] It should be noted that, specifically, in this embodiment, the two ends of the middle driven blade 153 are rotatably connected to the linkage bar 13 and the support plate 111, so that the linkage bar 13 drives the middle driven blade 153 to rotate around the connection between the middle driven blade 153 and the support plate 111. At the same time, the top driven blade 151 and the bottom driven blade 152 are driven to rotate along with the linkage bar 13.

[0057] In an optional exemplary embodiment, the number of the middle driven blades 153 is at least two. It can be understood that the number of the middle driven blades 153 corresponds to the number of the middle driven blades 153, and a support plate 111 is also provided in the middle of the middle driven blades 153, which is the same support plate 111 as the support plate 111 in the middle of the middle active blades 143. A linkage bar 13 is provided at the corresponding position of the support plate 111.

[0058] Specifically, the connecting pieces 144 at both ends of the middle driven blade 153 are connected to the linkage bar 13 and the support plate 111 through bolts 147 and are rotatably connected to realize that the linkage bar 13 drives the middle driven blade 153 to rotate.

[0059] Specifically, the connecting piece 144 of the top driven blade 151 and the bottom driven blade 152 close to the middle driven blade 153 is connected to the linkage bar 13 and the support plate 111 through bolts 147 to realize the rotation of the top driven blade 151 and the bottom driven blade 152.

[0060] Specifically, the connecting piece 144 of the top driven blade 151 away from the middle driven blade 153 is connected to the top frame 112 through a cross countersunk bolt 154; the connecting piece 144 of the bottom driven blade 152 away from the middle driven blade 153 is connected to the bottom frame 113 through a cross countersunk bolt 154. This enables the top driven blade 151 and the bottom driven blade 152 to rotate with the linkage bar 13.

[0061] In an optional exemplary embodiment, the active blade 14 is disposed at the center of the frame 11 , and the active shaft 12 is disposed at the central axis of the frame 11 ; the driven blade 15 is disposed at opposite sides of the active blade 14 .

[0062] It should be noted that, specifically, in this embodiment, the active blade 14 is arranged at the center position of the frame 11, the active shaft 12 is arranged at the center axis position of the frame 11; and the driven blade 15 is arranged at two opposite sides of the active blade 14. In this arrangement, the active shaft 12 can drive the active blade 14 from the middle, and the active blade 14 can drive the linkage bar 13 from the middle position of the linkage bar 13, so as to drive the driven blades 15 arranged on both sides of the active shaft 12 to rotate, which is more labor-saving and convenient to realize the driving of the linkage bar 13.

[0063] It is understandable that the specific location of the active blades 14 is not limited here. In other specific embodiments, the active blades 14 can be arranged at other suitable locations according to user needs.

[0064] In an optional exemplary embodiment, the linkage kit 16 includes a sleeve 161 and a connecting plate 162, the sleeve 161 is protruded at one end of the connecting plate 162, the driving shaft 12 passes through the sleeve 161, and is fixedly connected to the sleeve 161 by a fastening bolt 163; the end of the connecting plate 162 away from the sleeve 161 is connected to the linkage bar 13 by a bolt 147.

[0065] It should be noted that, specifically, in this embodiment, the linkage kit 16 includes a sleeve 161 and a connecting plate 162, the sleeve 161 is convexly arranged at one end of the connecting plate 162, the driving shaft 12 passes through the sleeve 161, and is fixedly connected to the sleeve 161 by a fastening bolt 163; the end of the connecting plate 162 away from the sleeve 161 is connected to the linkage bar 13 by a bolt 147. Such a configuration facilitates the fixed connection between the driving shaft 12 and the linkage kit 16, and simultaneously realizes the rotatable connection between the linkage kit 16 and the linkage bar 13.

[0066] In an optional exemplary embodiment, the active blades 14 and the driven blades 15 are steel blades or plastic blades.

[0067] It should be noted that, specifically, in this embodiment, the active blades 14 and the driven blades 15 can be steel blades or plastic blades. It is understandable that in other specific embodiments, the active blades 14 and the driven blades 15 can also be made of other materials according to the specific needs of the user.

[0068] The present application also provides a grain processing device, comprising the above-mentioned adjustable shutter 10.

[0069] The grain processing device provided in the embodiment of the present application, because it includes the above-mentioned adjustable shutters 10, also has the above-mentioned technical effects of synchronous adjustment, easy adjustment and reduced resistance.

[0070] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

Claims

1. An adjustable blind, characterized in that: It includes a frame, a driving shaft, a linkage bar, a driving blade and a driven blade; The driving shaft passes through two opposite sides of the frame and is rotatably connected to the frame; The active shaft is fixedly connected to the active blade via a linkage kit, the linkage kit is rotatably connected to the linkage bar, and the active blade is rotatably connected to the linkage bar; The driven blade is rotatably connected to the support plate in the frame and the linkage bar; The driving shaft is rotated under the action of external force, driving the linkage bar to approach or move away from the support plate of the frame, and the linkage bar drives the driven blade to rotate around the connection between the driven blade and the support plate.

2. The adjustable blind according to claim 1, characterized in that: The frame includes a top border, a bottom border, a left border and a right border; The top frame and the bottom frame are arranged opposite to each other, and the left frame and the right frame are arranged opposite to each other; the top frame and the bottom frame are respectively connected to two ends of the left frame and the right frame, so that the frame as a whole forms a rectangular frame; The driving shaft passes through the top frame and the bottom frame; Two sides of the support plate are connected to the left frame and the right frame respectively.

3. The adjustable blind according to claim 2, characterized in that: The active blades include a top active blade, a bottom active blade and a middle active blade; Both ends of the top active blade, the bottom active blade and the middle active blade are provided with connecting pieces; The connecting plates are each provided with a through hole for the driving shaft to penetrate; The connecting pieces at both ends of the middle active blade are provided with connecting holes for connecting with the linkage bar; The connecting pieces of the top active blade and the bottom active blade on a side close to the middle active blade are provided with connecting holes for connecting with the linkage bar.

4. The adjustable blind according to claim 3, characterized in that: The number of the middle active blades is at least two; The connecting pieces at both ends of the middle active blade are connected to the linkage bar by bolts and are rotatably connected; The connecting pieces of the top active blade and the bottom active blade on one side close to the middle active blade are connected to the linkage bar by bolts and are rotatably connected.

5. The adjustable blind according to claim 2, characterized in that: The driven blades include top driven blades, bottom driven blades and middle driven blades; Both ends of the top driven blade, the bottom driven blade and the middle driven blade are provided with connecting pieces; the connecting pieces at both ends of the middle driven blade are provided with connecting holes for connecting with the linkage bar and connecting holes for connecting with the support plate; The connecting pieces of the top driven blade and the bottom driven blade close to the middle driven blade are provided with connecting holes for connecting with the linkage bar and connecting holes for connecting with the support plate; A connection hole rotatably connected to the top frame is provided on the connection piece on the side of the top driven blade away from the middle driven blade; A connecting hole rotatably connected to the bottom frame is provided on the connecting piece at the side of the bottom driven blade away from the middle driven blade.

6. The adjustable blind according to claim 5, characterized in that: The number of the middle driven blades is at least two; The connecting pieces at both ends of the middle driven blade are connected to the linkage bar and the support plate by bolts, and are rotatably connected; The connecting pieces of the top driven blade and the bottom driven blade close to the middle driven blade are connected to the linkage bar and the support plate by bolts; The connecting piece of the top driven blade away from the middle driven blade is connected to the top frame by a cross countersunk bolt; The connecting piece of the bottom driven blade away from the middle driven blade is connected to the bottom frame by a cross countersunk bolt.

7. The adjustable blind according to any one of claims 1 to 6, characterized in that: The active blade is arranged at the center position of the frame, the active shaft is arranged at the center axis position of the frame; and the driven blade is arranged at two opposite sides of the active blade.

8. The adjustable blind according to any one of claims 1 to 6, characterized in that: The linkage kit includes a sleeve and a connecting plate, the sleeve is protruding at one end of the connecting plate, the driving shaft passes through the sleeve and is fixedly connected to the sleeve by fastening bolts; the end of the connecting plate away from the sleeve is connected to the linkage bar by bolts.

9. The adjustable blind according to any one of claims 1 to 6, characterized in that: The active blades and the driven blades are steel blades or plastic blades.

10. A grain processing device, characterized in that: The adjustable blind comprises the adjustable blind according to any one of claims 1 to 9.

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