Air volume adjusting device of impurity removing fan and harvester

Abstract

The utility model relates to the technical field of fan air regulation, in particular to an air regulation device of an impurity removal fan and a harvester. The device comprises a rotating plate, a plurality of guide rail plates and a plurality of air adjusting plates in one-to-one correspondence with the guide rail plates. The multiple guide rail plates are evenly arranged in the circumferential direction, and each guide rail plate is provided with a rail. A plurality of rotating plate guide grooves in one-to-one correspondence with the rails are formed in the rotating plate; a sliding shaft is arranged on each air adjusting plate; one end of the sliding shaft is mounted on one track, and the other end of the sliding shaft is mounted in the rotating plate guide groove corresponding to the track; an air inlet is formed in the center of the rotating plate, the rotating plate rotates to drive the air adjusting plates to move along the rotating plate guide grooves and the rails, and then the shielding range of the air adjusting plates to the air inlet is changed. When the air volume is adjusted, the rotating plate is controlled to rotate, all the air adjusting plates move on the rails in the guide rail plate, the shielding area of the air adjusting plates at the air inlet is adjusted, and therefore the air inlet volume of the impurity removing fan is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of fan air volume regulation, in particular to an air volume regulation device for a debris-clearing fan and a harvester. Background Art

[0002] my country's corn production accounts for approximately 20% of the world's total. Widely cultivated across all provinces, corn cultivation conditions, varieties, and maturity vary significantly across provinces and regions. Corn stalk height and greenness vary significantly across different varieties. The centrifugal blowers on traditional corn harvesters operate at a fixed air volume, making them inadequate for harvesting different corn varieties. Excessive air volume often results in kernels being blown out, while insufficient air volume results in poor harvesting. Utility Model Content

[0003] The utility model aims to improve the technical problem in the background technology that the air intake volume of a debris-cleaning fan is difficult to adjust, and provides an air volume adjustment device for a debris-cleaning fan.

[0004] The implementation method of the air volume regulating device of the cleaning fan is as follows:

[0005] It includes a rotating plate, a plurality of guide rail plates, and a plurality of air regulating plates corresponding to the guide rail plates one by one;

[0006] The plurality of guide rail plates are evenly arranged along the circumferential direction, and each guide rail plate is provided with a track; the rotating plate is provided with a plurality of rotating plate guide grooves corresponding to the tracks one by one;

[0007] A sliding shaft is provided on each of the air regulating plates; one end of the sliding shaft is mounted on one of the rails, and the other end is mounted in a guide groove of the rotating plate corresponding to the rail;

[0008] An air inlet is arranged at the center of the rotating plate, and the rotation of the rotating plate can drive each of the air regulating plates to move along the rotating plate guide groove and the track, thereby changing the shielding range of each of the air regulating plates on the air inlet.

[0009] In a preferred embodiment, the air regulating plate includes a connecting portion and a fan ring portion, the connecting portion is rotatably connected to the sliding shaft, and the fan ring portion is used to shield the air inlet.

[0010] In a preferred embodiment, the edges of the fan ring portions of the plurality of adjustment plates are sequentially butted together to form a closed circular ring, at which time the air inlet is blocked to the maximum extent.

[0011] In a preferred embodiment, there are five guide plates and five air regulating plates; the rotating plate is in the shape of a five-pointed star, and a rotating plate guide groove is provided at each corner.

[0012] In a preferred embodiment, the rotating plate guiding groove is arc-shaped.

[0013] In a preferred embodiment, the extension lines of multiple said tracks intersect at the center of the rotating plate.

[0014] In a preferred embodiment, a guiding shaft is respectively provided on each air regulating plate; one end of the guiding shaft is arranged on the track, and the other end is connected to the air regulating plate.

[0015] In a preferred embodiment, a driving part for driving the rotating plate to rotate reciprocally is further provided on the rotating plate.

[0016] In a preferred embodiment, the driving part is a handle.

[0017] In a preferred embodiment, the driving part includes a driving motor and multiple connecting rods, and the output end of the driving motor is connected to the rotating plate through the connecting rods; the output end of the driving motor can perform telescopic movement along a straight line, so as to drive the rotating plate to rotate reciprocally through the connecting rods.

[0018] The present utility model further provides a harvester, including a cleaning fan and the cleaning fan air volume regulating device as described above, and the cleaning fan air volume regulating device is arranged at the air inlet of the cleaning fan.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] During the actual operation of the corn harvester, judge whether the air volume of the cleaning fan is too large or too small according to the impurity blowing effect of the cleaning fan. When adjusting the air volume, control the rotation of the rotating plate, so that each air regulating plate moves on the track in the guide rail plate, and adjust the shielding area of the air inlet air regulating plate according to the required air volume, thereby realizing the adjustment of the air intake volume of the cleaning fan.

[0021] The present utility model can adapt to different varieties of corn, ensuring clean impurity removal and no loss of grains. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the cleaning fan air volume regulating device provided in the embodiment of the present utility model installed on the cleaning fan;

[0024] Figure 2 Schematic diagram of the state when the air intake of the air volume regulating device of the impurity removal fan in the embodiment of the present utility model is the smallest;

[0025] Figure 3 Schematic diagram of the state when the air intake of the air volume regulating device of the impurity removal fan in the embodiment of the present utility model is the largest;

[0026] Reference numerals in the figure:

[0027] 1 - Rotating plate; 11 - Rotating plate guide groove;

[0028] 2 - Guide rail plate; 21 - Track;

[0029] 3 - Slide shaft; 4 - Handle; 5 - Air regulating plate group;

[0030] 51 - First air regulating plate; 52 - Second air regulating plate; 53 - Third air regulating plate; 54 - Fourth air regulating plate; 55 - Fifth air regulating plate;

[0031] 6 - Impurity removal fan; 7 - Driving wheel. Specific implementation manner

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Components of the embodiments of the present utility model described and labeled in the accompanying drawings can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0034] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connection" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] The following will describe in detail some embodiments of the present utility model with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0039] The structure of the air volume adjustment device of the impurity removal fan provided in this embodiment is as Figures 1 to 3 shown, including a rotating plate 1, a plurality of guide rail plates 2, and an air volume adjustment plate group 5. The air volume adjustment plate group 5 includes a plurality of air volume adjustment plates corresponding to the guide rail plates 2 one by one.

[0040] The plurality of guide rail plates 2 are uniformly arranged in the circumferential direction, and a track 21 is provided on each guide rail plate 2; a plurality of rotating plate guide grooves 11 corresponding to the tracks 21 are provided on the rotating plate 1.

[0041] The air volume adjustment plate group 5 of this embodiment includes a first air volume adjustment plate 51, a second air volume adjustment plate 52, a third air volume adjustment plate 53, a fourth air volume adjustment plate 54, and a fifth air volume adjustment plate 55. A sliding shaft 3 is provided on each air volume adjustment plate; one end of the sliding shaft 3 is installed on a track 21, and the other end is installed in the rotating plate guide groove 11 corresponding to the track 21.

[0042] An air inlet is provided at the center of the rotating plate 1, and the air inlet is preferably circular. The rotation of the rotating plate 1 can simultaneously drive the first air regulating plate 51, the second air regulating plate 52, the third air regulating plate 53, the fourth air regulating plate 54 and the fifth air regulating plate 55 to move along their respective corresponding rotating plate guiding grooves 11 and tracks 21, thereby changing the shielding range of the air regulating plate group 5 for the air inlet, and adjusting the air intake by adjusting the area of the air inlet.

[0043] The shielding range of the air regulating plate group 5 for the air inlet is adjustable between 0 and 80%. That is, when the shielding range of the air regulating plate group 5 for the air inlet is 0, the opening area of the air inlet is the largest, and the air intake is the largest at this time; when the shielding range of the air regulating plate group 5 for the air inlet is 80%, the opening area of the air inlet is the smallest, and the air intake is the smallest at this time.

[0044] To make the position adjustment of each air regulating plate smoother, the shielding range for the air inlet more regular, and the air intake more uniform, the air regulating plate can be designed to include a connecting portion and a fan-shaped ring portion. The shape of the connecting portion is not limited, and it is used for rotatable connection with the sliding shaft 3, and the fan-shaped ring portion is used for shielding the air inlet.

[0045] When the shielding range of the air regulating plate group 5 for the air inlet is 80%, the edges of the fan-shaped ring portions of the first air regulating plate 51, the second air regulating plate 52, the third air regulating plate 53, the fourth air regulating plate 54 and the fifth air regulating plate 55 are sequentially butted, and a closed circular ring can be formed, with a circular hole formed in the center. The area of the circular hole is 20% of the area of the air inlet, and the air intake is the smallest at this time.

[0046] In a preferred embodiment, the rotating plate 1 is in the shape of a pentagram, and a rotating plate guiding groove 11 is provided at each corner.

[0047] Since the rotating plate 1 makes a rotational motion, the track 21 is a straight track, and the sliding shaft 3 has to move along both the rotating plate guiding groove 11 and the track 21 at the same time. Therefore, the rotating plate guiding groove 11 is set to be arc-shaped to make the movement of the sliding shaft 3 smoother.

[0048] At the same time, the extension lines of multiple tracks 21 intersect at the center of the rotating plate 1, which can also improve the smoothness of the movement of the sliding shaft 3.

[0049] The connection method between the sliding shaft 3 and the rotating plate 1, the guide rail plate 2 and the air regulating plate is as follows: the guide rail plate 2 is located on the innermost side and is fixed to the side wall of the fan by bolts; the distal end of the track 21 is narrower and the proximal end is wider; the air regulating plate and the sliding shaft 3 in the middle are welded together, and the rotating plate 1 is located on the outermost side; one end of the sliding shaft is embedded in the track 21, and the other end is embedded in the rotating plate guiding groove 11.

[0050] In other embodiments, pulleys can be used to replace the sliding shaft 3. The friction between the pulleys and the track 21 is smaller, and the adjustment process can be smoother.

[0051] To keep the angles of each air deflector stable and prevent the air deflectors from shifting in angle under the action of gravity, in a preferred embodiment, a guide shaft (not shown in the figure) is respectively provided on each air deflector; one end of the guide shaft is arranged on the track 21, and the other end is connected to the air deflector. The guide shaft and the sliding shaft 3 are both connected to the air deflector and are arranged on the track 21, so as to orient the air deflector at two points and prevent it from deflecting in angle under its own gravity, thus ensuring the attitude and stability of the air deflector group 5 when adjusting the size of the air inlet.

[0052] A driving part for driving the rotary plate 1 to rotate reciprocally is also provided on the rotary plate 1. In this embodiment, the driving part adopts a handle 4, and the handle 4 is welded to the outer surface of the rotary plate 1. When adjusting the size of the air inlet, the rotary plate 1 is rotated through the handle 4, and the air deflector group 5 is driven to move along the track 21 through the rotary plate guide groove 11, so that each air deflector converges towards the center to reduce the air inlet or moves outward to increase the air inlet. A locking bolt is also provided on the rotary plate 1. After the opening of the air inlet is adjusted to an appropriate size, the rotary plate 1 and the guide rail plate 2 are kept relatively stationary by tightening the locking bolt.

[0053] In other embodiments, the driving part can also adopt an electric drive mode, which can specifically include a driving motor and multiple connecting rods. The output end of the driving motor is connected to the rotary plate through the connecting rod; the output end of the driving motor can perform telescopic movement along a straight line, so as to drive the rotary plate to rotate reciprocally through the connecting rod.

[0054] During the actual operation of the corn harvester, judge whether the air volume of the cleaning fan is too large or too small according to the impurity blowing effect of the cleaning fan. When adjusting the air volume, control the rotation of the rotary plate, so that each air deflector moves on the track in the guide rail plate, and adjust the shielding area of the air inlet air deflector according to the required air volume, thereby realizing the adjustment of the air intake volume of the cleaning fan. The solution of this embodiment uses bionic technology to achieve arbitrary and precise adjustment of the air volume of the cleaning fan by simulating the structure of the human eye iris. It can adapt to different varieties of corn and ensure the best impurity cleaning effect with as little grain loss as possible under different operating conditions.

[0055] This embodiment also provides a harvester, including a cleaning fan and the cleaning fan air volume adjusting device, and the cleaning fan air volume adjusting device is arranged at the air inlet of the cleaning fan. This harvester simultaneously has the various advantages of the cleaning fan air volume adjusting device, which will not be elaborated here one by one.

[0056] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A device for adjusting the air volume of a cleaning fan, characterized in that: It includes a rotating plate, a plurality of guide rail plates, and a plurality of air regulating plates corresponding to the guide rail plates one by one; The plurality of guide rail plates are evenly arranged along the circumferential direction, and each guide rail plate is provided with a track; the rotating plate is provided with a plurality of rotating plate guide grooves corresponding to the tracks one by one; A sliding shaft is provided on each of the air regulating plates; one end of the sliding shaft is mounted on one of the rails, and the other end is mounted in a guide groove of the rotating plate corresponding to the rail; An air inlet is arranged at the center of the rotating plate, and the rotation of the rotating plate can drive each of the air regulating plates to move along the rotating plate guide groove and the track, thereby changing the shielding range of each of the air regulating plates on the air inlet.

2. The air volume regulating device for a cleaning fan according to claim 1, characterized in that: The air regulating plate includes a connecting portion and a fan ring portion, the connecting portion is rotatably connected to the sliding shaft, and the fan ring portion is used to shield the air inlet.

3. The air volume regulating device for the cleaning fan according to claim 2, characterized in that: The edges of the fan ring parts of the plurality of air regulating plates are connected in sequence to form a closed circular ring, and at this time the air inlet is blocked to the maximum extent.

4. The air volume regulating device for a cleaning fan according to claim 1, characterized in that: There are five guide rail plates and five air regulating plates; the rotating plate is in the shape of a five-pointed star, and a rotating plate guide groove is provided at each corner.

5. The air volume regulating device for a cleaning fan according to claim 4, characterized in that: The rotating plate guide groove is arc-shaped.

6. The air volume regulating device for a cleaning fan according to claim 1, characterized in that: A guide shaft is also provided on each of the air regulating plates; one end of the guide shaft is provided on the track, and the other end is connected to the air regulating plate.

7. The air volume regulating device for a cleaning fan according to claim 1, characterized in that: The rotating plate is also provided with a driving portion for driving the rotating plate to rotate back and forth.

8. The air volume regulating device for a cleaning fan according to claim 7, characterized in that: The driving part is a handle.

9. The air volume regulating device for a cleaning fan according to claim 7, characterized in that: The driving part includes a driving motor and a plurality of connecting rods, and the output end of the driving motor is connected to the rotating plate through the connecting rods; the output end of the driving motor can perform telescopic motion along a straight line, thereby driving the rotating plate to perform reciprocating rotation through the connecting rods.

10. A harvester, characterized in that: It comprises a debris-cleaning fan and the debris-cleaning fan air volume regulating device according to any one of claims 1 to 9, wherein the debris-cleaning fan air volume regulating device is arranged at the air inlet of the debris-cleaning fan.

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