Grain collecting device and harvester

Abstract

The utility model provides a grain collecting device and a harvester. The grain collecting device comprises a grain granary, a grain elevator, a blanking channel, a grain suction fan and an air adjusting part used for adjusting the impurity removal air volume. Wherein the grain elevator conveys grains to the grain granary, the blanking channel is respectively connected with the grain elevator and the grain granary, and the grain suction fan is arranged above the blanking channel and used for removing impurities from the grains passing through the blanking channel; the grain suction fan comprises a fan shell, an air inlet shell connected with the fan shell, an impurity removal shell and an impeller mechanism. An air inlet formed in the top of the blanking channel is communicated with the air inlet shell; the air adjusting part comprises an air adjusting baffle, the air adjusting baffle is arranged between the discharging channel and the air inlet shell, and the air adjusting baffle adjusts the size of the air inlet to control the impurity discharging air volume. According to the grain collecting device and the harvester provided by the utility model, the grain collecting quality can be improved and the impurity rate of grains can be reduced by adjusting the impurity removal air volume, and meanwhile, the grains can be prevented from being discharged due to overlarge air volume.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery manufacturing, in particular to a grain collection device and a harvester. Background Art

[0002] In recent years, as users of corn harvesters have put forward requirements for the impurity content in the harvesting of corn ears and corn grains, for corn harvesters equipped with a knife-aligning cutting table, it is necessary to design a cleaning system with a compact structure and good impurity removal effect to reduce the impurity content during corn harvesting.

[0003] The cleaning system of a corn harvester is mostly divided into two parts. The first cleaning part is for impurity removal after the corn ears are removed. After the corn ears are removed on the cutting table and transported to the rear-end peeling machine through the elevator, there are still impurities such as stalks and leaves. The first cleaning part mainly deals with this part of the impurities; after the corn ears are peeled by the peeling machine and transported to the rear end of the harvester for further processing, the second cleaning part removes impurities from the peeled corn ears and the fallen corn grains. During this process, when the corn grains enter the corn grain box, the impurity content decreases. Therefore, most of the harvesters on the market do not have a grain suction fan at the same time. However, it cannot be denied that although the impurity content in the corn grains is low, there is still some. And if the impurity removal air volume is too large, the corn grains will be discharged with the impurities. Therefore, it is necessary to provide a grain suction fan with adjustable air volume to solve the impurity removal problem in the process of corn grain recovery. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a grain collection device and a harvester.

[0005] To solve the above technical problems, according to one aspect of the utility model, a grain collection device is provided for collecting the grains dropped during the operation of the peeling machine in corn harvesting. It includes a grain bin, a grain elevator, a feeding channel, a grain suction fan, and an air volume adjusting part for adjusting the impurity removal air volume. The grain bin is used to collect the grains dropped during the operation of the peeling machine; the grain elevator is used to transport the grains to the grain bin; the feeding channel is respectively connected to the grain elevator and the grain bin; the grain suction fan is placed above the feeding channel to remove impurities from the grains passing through the feeding channel. The grain suction fan includes a fan housing, an air inlet housing communicated with the fan housing and placed on one side of the fan housing, a waste discharge housing communicated with the fan housing and placed on the opposite side of the fan housing, and an impeller mechanism placed inside the fan housing; the feeding channel is communicated with the air inlet housing through an air inlet provided at the top of the feeding channel; the air volume adjusting part includes an air volume adjusting baffle, and the air volume adjusting baffle is arranged between the feeding channel and the air inlet housing. By adjusting the size of the air inlet through the air volume adjusting baffle, the impurity removal air volume is controlled.

[0006] By setting up the air regulating part, the air regulating part controls the amount of impurity-removing air entering the blanking channel from the air inlet housing by blocking the size of the air inlet, so as to realize air volume regulation. When the corn kernels are conveyed to the blanking channel by the grain elevator, during the impurity-removing process of the corn kernels, the situation that the kernels are discharged due to excessive air volume is avoided.

[0007] Furthermore, the air regulating part includes an air regulating bracket which is used to support the air regulating baffle. The air regulating bracket is connected to the air regulating baffle and the top plate where the air inlet is located. The air regulating bracket includes a first bent plate and a second bent plate. The first bent plate is connected to the air regulating baffle, and the second bent plate is connected to the top plate. By setting the air regulating bracket on the top plate of the blanking channel, during the process of adjusting the air volume, the air regulating baffle is easier to pull and move, and the operation is simple.

[0008] Furthermore, the air regulating baffle is provided with an adjusting groove which is arranged along the advancing direction of the harvester. A limiting pin is arranged on the air regulating bracket, and the limiting pin is placed in the adjusting groove. The air regulating baffle slides around the limiting pin along the position set by the adjusting groove to block the air inlet and change the size of the air inlet, so as to adjust the size of the impurity-removing air volume. Through the combination of the adjusting groove and the limiting pin, the position of the air regulating baffle is limited. On the premise of adjusting to the maximum impurity-removing air volume, the air regulating baffle is prevented from sliding to avoid the loss of the air regulating baffle during the operation.

[0009] Furthermore, the fan housing includes a first panel and a first back panel which are arranged oppositely, and a first connecting wall arranged between the first panel and the first back panel. The two sides of the first connecting wall are respectively connected to the first panel and the first back panel. The air inlet housing includes a second connecting wall and a second back panel which is arranged parallel to the first panel and the first back panel.

[0010] Furthermore, the impeller mechanism includes an impeller shaft and blades. The blades are arranged at one end of the impeller shaft and are evenly distributed along the rotating direction of the impeller shaft. The blades are placed in the fan housing. One end of the impeller shaft where the blades are arranged is connected to the first panel, and the other end is placed in the air inlet housing and is connected to the second back panel.

[0011] Furthermore, the impeller mechanism is connected to the grain elevator. A first sprocket is arranged on one side of the impeller shaft connected to the second back panel. A lifter sprocket is arranged on the outer side of the housing of the grain elevator. The first sprocket is connected to the lifter sprocket.

[0012] Further, one or more first fixing ears are provided at the edge of the first panel, and one or more second fixing ears are correspondingly provided at one end of the first connecting wall connecting the first panel. The setting direction of the second fixing ears is perpendicular to the installation direction of the first connecting wall, and the first fixing ears are connected to the second fixing ears.

[0013] Further, the grain bin is arranged inside the impurity discharge housing, and the impurity discharge housing extends to the outside of the grain bin for impurity discharge.

[0014] By providing an air regulating part, the air inlet is blocked by an air regulating baffle to realize the regulation of the air volume in the blanking channel, and further control the exclusion of grain impurities, so as to realize grain impurity discharge. The blocking size of the air inlet can be selected by the user according to the harvesting scenario.

[0015] The embodiment of the present invention also provides a harvester, including the grain collection device as described above. By using such a harvester, the air volume blown by the grain suction fan into the blanking channel can be adjusted according to the harvesting requirements, so as to realize grain impurity removal.

[0016] The embodiment of the present invention also provides a harvester, including the grain suction fan, the grain blowing fan, the elevator impurity suction fan and the elevator impurity blowing fan as described above. By using such a harvester, the straw conveyed from the cutting table to the rear elevator is discharged by configuring the elevator impurity suction fan and the elevator impurity blowing fan, so that when the ear falls into the rear peeling machine and related processing devices, there are no impurities such as straw except the ear. During the process of peeling the ear by the peeling machine, grain dropping will occur. The grain suction fan and the grain blowing fan remove the impurities in the grain, thereby improving the quality of grain collection and reducing the impurity content of the grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the drawings and specific embodiments:

[0018] Figure 1 It is a schematic diagram of a harvester provided by an embodiment of the present invention.

[0019] Figure 2 It is a schematic structural diagram of a grain collection device provided by an embodiment of the present invention Figure 1 。

[0020] Figure 3 It is a schematic structural diagram of a grain collection device provided by an embodiment of the present invention Figure 2 。

[0021] Figure 4 It is a schematic structural diagram of a grain collection device provided by an embodiment of the present invention Figure 3 。

[0022] Figure 5 Structural schematic of a grain collection device provided by an embodiment of the present utility model Figure 4 。

[0023] Figure 6 Structural schematic of a grain collection device provided by an embodiment of the present utility model Figure 5 。

[0024] Figure 7 Structural schematic of a grain collection device provided by an embodiment of the present utility model Figure 6 。

[0025] Explanation of reference numerals in the drawings:

[0026] 100 - Harvester; 1 - Cutting table; 2 - Elevator; 21 - Elevator impurity - exhaust suction fan; 22 - Elevator impurity - exhaust blower; 3 - Husker; 31 - Bract - conveying auger; 32 - Screening concave plate; 33 - Grain - conveying plate; 34 - Grain - conveying auger; 4 - Grain elevator; 41 - Grain suction fan; 411 - Fan housing; 4111 - First panel; 4111a - First fixing ear; 4112 - First back panel; 4113 - First connecting wall; 4113a - Second fixing ear; 412 - Air - inlet housing; 4121 - Second connecting wall; 4122 - Second back panel; 413 - Impurity - exhaust housing; 414 - Impeller mechanism; 4141 - Impeller shaft; 4142 - First sprocket; 4143 - Blade; 42 - Grain blower; 43 - Elevator sprocket; 5 - Feeding channel; 51 - Top plate; 51a - Air - inlet; 6 - Air - regulating part; 61 - Air - regulating baffle; 611 - Adjusting groove; 62 - Air - regulating bracket; 621 - First bent plate; 622 - Second bent plate; 623 - Limiting pin; 7 - Grain bin. Detailed implementation manners

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] To make the drawings concise, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is labeled. In this document, "one" not only means "only this one", but also can mean "more than one" situation.

[0029] It should also be further understood that the term "and / or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0030] In this context, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 circumstances.

[0031] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0032] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.

[0033] See Figure 1 , Figure 1 This provides a harvester for an embodiment of the present utility model, including a grain suction fan 41 for removing impurities from the collected grains during the harvesting process. As Figure 1In the schematic harvester during corn harvesting, the corn cobs are conveyed by the header 1 through the elevator 2 to the rear husker 3 for cob husking. During the process of the cobs being conveyed by the elevator 2 to the rear husker 3, the elevator 2 will also convey the stalks carried in the cobs to the rear husker 3. If the stalks are not processed, the impurity content in the cobs is high, affecting the harvesting quality. Therefore, an elevator impurity exhaust blower 21 and an elevator impurity blowing fan 22 are provided during the process of the elevator 2 conveying to the rear husker 3. Among them, the elevator impurity exhaust blower 21 is arranged above the elevator 2, and the elevator impurity blowing fan 22 is arranged below the elevator 2 and at the front end of the husker 3. When the corn cobs are conveyed to the husker 3 for husking the husks on the cobs, there is a situation where the grains fall off. The husks and the fallen grains fall onto the screening concave plate 32 below the husker 3. The husk conveying auger 31 arranged on the screening concave plate 32 conveys the husks to the next processing link and then throws them outside the harvester. The corn grains pass through the screening concave plate 32 and fall onto the lower grain conveying plate 33, and then are conveyed by the grain conveying auger 34 to the grain elevator 4 and then transported to the grain bin 7. The grain blowing fan 42 is arranged behind the grain conveying plate 33 to exhaust impurities such as corn whiskers that follow the grains. The grain suction fan 41 is arranged above the blanking channel 5 between the grain elevator 4 and the grain bin 7 to further exhaust impurities from the collected grains. Through the settings of the elevator impurity exhaust blower 21, the elevator impurity blowing fan 22, the grain blowing fan 42, and the grain suction fan 41, the impurity content during the removal and collection of corn cobs is greatly reduced, and the harvesting effect of the harvester is improved.

[0034] See Figures 2 - 7, to improve the quality of grain collection, an embodiment provided by the present utility model is a grain collection device, which is used to collect the grains dropped during the operation of the peeling machine 3 in corn harvesting. The grain collection device includes a grain bin 7, a grain elevator 4, a feeding channel 5, a grain suction fan 41, and a wind regulation part 6 for adjusting the impurity removal air volume. Among them, on the premise of referring to the forward direction of the harvester, the grain bin 7 for collecting the grains dropped during the operation of the peeling machine 3 is arranged on the left side of the harvester body. To facilitate the grain elevator 4 to transport the grains to the grain bin 7, the grain elevator 4 is arranged at the front end of the grain bin 7 and is on the same side of the harvester as the grain bin 7. To accurately transport the grains to the grain bin 7, a feeding channel 5 is arranged between the grain elevator 4 and the grain bin 7. The grains transported in the grain elevator 4 are transferred to the grain bin 7 through the feeding channel 5. Among the grains transported to the grain bin 7, there may be a problem of impurities. Therefore, a grain suction fan 41 is arranged during the process of the grains being transferred from the grain elevator 4 to the grain bin 7 for impurity removal. The grain suction fan 41 is arranged above the feeding channel 5. Specifically, an air inlet 51a is arranged at the top of the feeding channel 5. The grain suction fan 41 includes a fan housing 411 and an air inlet housing 412 communicated with the fan housing 411. The air inlet housing 412 is communicated with the air inlet 51a arranged at the top of the feeding channel 5. At the same time, on the other side of the fan housing 411 compared with the position where the air inlet housing 412 is arranged, a waste discharge housing 413 is also arranged. The waste discharge housing 413 is used to discharge the impurities in the grains during the process of the grain elevator 4 transporting the grains to the grain bin 7. In the fan housing 411, an impeller mechanism 414 is also arranged. When the impeller mechanism 414 rotates, an air flow is generated in the fan housing 411. The air flow passes through the air inlet housing 412 and the air inlet 51a arranged at the top of the feeding channel 5 to discharge the impurities in the grains transported in the feeding channel 5. According to different usage scenarios and harvesting requirements, it is necessary to adjust the size of the air flow entering the feeding channel 5. Therefore, a wind regulation part 6 is also arranged to adjust the impurity removal air volume. The wind regulation part 6 includes a wind regulation baffle 61. The wind regulation baffle 61 is arranged between the feeding channel 5 and the air inlet housing 412. The wind regulation baffle 61 blocks the air inlet 51a, and the size of the air flow is adjusted by changing the size of the air inlet 51a, thereby controlling the impurity removal air volume and performing the grain impurity removal process. When the area of the wind regulation baffle 61 blocking the air inlet 51a is large, the air flow in the feeding channel 5 is small, that is, the air volume is small, and the impurities are transferred to the waste discharge housing 413 through the air inlet 51a and discharged; when the wind regulation baffle 61 completely blocks the air inlet 51a, there is no air flow in the feeding channel 5, so the impurities in the grains cannot be discharged from the waste discharge housing 413.

[0035] By setting up the air regulating part 6, the impurities in the process of the grains being transferred from the grain elevator 4 to the grain bin 7 are treated to ensure that the corn grains are clean and free of impurities. When the air flow in the blanking channel 5 is too large and the impurity discharge air volume is relatively large, when the grains are dry, some smaller grain particles will be discharged along with the grain impurities. The air regulating baffle 61 is set to block the air inlet 51a provided at the top of the blanking channel 5, realizing the air volume regulation of the grain suction fan 41, avoiding the discharge of grains. At the same time, the air regulating baffle 61 can flexibly adjust the size of the air inlet 51a, which can meet the harvesting needs of different users. The user can change the size of the air inlet 51a controlled by the air regulating baffle 61 by himself, realizing two modes of enabling and disabling the grain suction fan 41, and being applicable to a variety of harvesting scenarios.

[0036] See Figure 5 、 Figure 6 、 Figure 7 For the convenience of users to adjust the air volume, in the embodiment of the present utility model, the air regulating part 6 is further provided with an adjusting bracket. The air inlet 51a is located on the top plate 51 at the top of the blanking channel 5. The air regulating bracket 62 is arranged on one side of the top plate 51 in the adjusting direction of the air regulating baffle 61. During the process of the air regulating baffle 61 adjusting the size of the air inlet 51a, the air regulating bracket 62 plays a supporting role for the air regulating baffle 61 to facilitate the user to adjust the size of the air inlet 51a. The air regulating bracket 62 includes a first bending plate 621 and a second bending plate 622. The first bending plate 621 is connected to the second bending plate 622. The first bending plate 621 is connected to the air regulating baffle 61, and the second bending plate 622 is connected to the top plate 51, thus realizing the fixation of the air regulating bracket 62. With this structure, the air regulating baffle 61 is easier to pull and the operation is simple.

[0037] See Figure 6 The air regulating baffle 61 is further provided with an adjusting groove 611. The setting direction of the adjusting groove 611 is consistent with the advancing direction of the harvester and is located in the center of the air regulating baffle 61. A limiting pin 623 is arranged on the air regulating bracket 62, and the limiting pin 623 is placed in the adjusting groove 611. The limiting pin 623 limits the adjusting position of the air regulating baffle 61. The air regulating baffle 61 moves along the setting direction of the adjusting groove 611 and needs to slide around the limiting pin 623, thereby realizing the adjustment of the size of the air inlet 51a and the adjustment of the impurity discharge air volume. The air regulating baffle 61 and the limiting pin 623 are fixed by nuts, which is convenient for pulling the air regulating baffle 61. Through the combination of the adjusting groove 611 and the limiting pin 623, the setting position of the air regulating baffle 61 is limited. On the premise of adjusting to the maximum impurity discharge air volume, that is, when the air regulating baffle 61 does not block the air inlet 51a, the air regulating baffle 61 is prevented from sliding to avoid the loss of the air regulating baffle 61 during the operation.

[0038] See Figure 5 、 Figure 6, the fan housing 411 is connected to the air inlet housing 412 and the impurity discharge housing 413. The air inlet housing 412 includes a first panel 4111, a first back panel 4112, and a first connecting wall 4113. The first connecting wall 4113 is disposed between the first panel 4111 and the first back panel 4112, and both ends of the first connecting wall 4113 are respectively connected to the first panel 4111 and the first back panel 4112. In addition, the lower side of the first connecting wall 4113 is also connected to the impurity discharge housing 413. The air inlet housing 412 is provided with a second connecting wall 4121 connected to the first back panel 4112. The second connecting wall 4121 is connected to the top plate 51 of the blanking channel 5, and both ends of the second connecting wall 4121 connected to the top plate 51 are disposed outside the air inlet 51a. The orthographic projection area of the second connecting wall 4121 relative to the top plate 51 completely shields the air inlet 51a. The air inlet housing 412 is further provided with a second back panel 4122, and the second back panel 4122 is parallel to the setting directions of the first panel 4111 and the first back panel 4112.

[0039] See Figure 6 , Figure 7 , the grain suction fan 41 is further provided with an impeller mechanism 414, and the impeller mechanism 414 includes an impeller shaft 4141 and blades 4143. Among them, the blades 4143 are disposed at one end of the impeller shaft 4141. To make the airflow formed when the impeller mechanism 414 rotates uniform in size, the blades 4143 are uniformly distributed along the rotation direction of the impeller shaft 4141. One end of the blade 4143 connected to the impeller shaft 4141 is disposed inside the fan housing 411, and the other end of the impeller shaft 4141 is disposed inside the air inlet housing 412. One end of the impeller shaft 4141 is connected to the first panel 4111, and one end is connected to the second back panel 4122. The impeller shaft 4141 is connected to the fan housing 411 and the air inlet housing 412.

[0040] See Figure 4 , to make the grain suction fan 41 work, that is, the impeller mechanism 414 rotates. The impeller mechanism 414 is connected to the grain elevator 4, and the grain elevator 4 provides power to the impeller mechanism 414. A first sprocket 4142 is sleeved on the two-point shaft on the side of the impeller shaft 4141 connected to the second back panel 4122. A lift sprocket 43 is disposed outside the housing of the grain elevator 4. The lift sprocket 43 is connected to the transmission mechanism of the grain elevator 4, and the first sprocket 4142 is connected to the lift sprocket 43 for transmission. When the grain elevator 4 works, the lift sprocket 43 rotates accordingly, and then drives the impeller shaft 4141 to rotate, and the grain suction fan 41 works. The first sprocket 4142 and the lift sprocket 43 are provided to bind the transmission structures of the grain suction fan 41 and the grain elevator 4, and thus realize the synchronous operation of the grain suction fan 41 and the grain elevator 4.

[0041] To ensure the stable connection of the fan housing 411 and to facilitate the cleaning of the grain suction fan 41 by the operator, one or more first fixing ears 4111a are provided on the first panel 4111. At the same time, a corresponding number of second fixing ears 4113a are provided at the connection position corresponding to the first panel 4111 on the first connecting wall 4113. The setting direction of the second fixing ears 4113a is perpendicular to the first connecting wall 4113, and the first fixing ears 4111a are connected to the second fixing ears 4113a. Through the combination of the first fixing ears 4111a and the second fixing ears 4113a, the first panel 4111 can be disassembled, and then the grain suction fan 41 can be cleaned to prevent the impeller mechanism 414 from being entangled by impurities, thereby affecting the impurity removal effect.

[0042] Furthermore, to avoid ineffective impurity removal, the grain bin 7 is arranged behind the impurity removal housing. The impurity removal housing is connected to the lower part of the first connecting wall 413. At the same time, the impurity removal housing 413 extends outward to the outside of the grain bin 7 and extends to the position below the bin opening of the grain bin 7.

[0043] Preferably, a harvester provided by an embodiment of the present invention includes the grain collection device as described above. By using such a harvester, the air volume blown by the grain suction fan 41 into the blanking channel 5 can be adjusted according to the harvesting requirements, so as to achieve grain impurity removal and avoid the situation that dry and relatively light grains are discharged along with the grain impurities when the air volume is too large.

[0044] Preferably, a harvester provided by an embodiment of the present invention includes a grain suction fan 41, a grain blower 42, a lifting conveyor impurity removal suction fan 21, and a lifting conveyor impurity removal blower 22. By using such a harvester, through the configuration of the lifting conveyor impurity removal suction fan and the lifting conveyor impurity removal blower 22, the straw conveyed from the cutting table 1 to the rear lifting conveyor is discharged, so that when the ear falls into the rear peeling machine 3 or related processing devices, there are no impurities such as straw except the ear. During the process of the peeling machine peeling the ear, grains may fall off. The grain suction fan 41 and the grain blower 42 remove the impurities in the grains, thereby improving the quality of grain collection and reducing the impurity content rate of the grains.

[0045] It is obvious to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover the modifications and variations of the present invention that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A grain collecting device for collecting grains dropped by a corn peeling machine during corn harvesting, characterized in that: include: A grain silo, which is used to collect grains dropped during the operation of the peeling machine; A grain elevator, the grain elevator is used to transport the grains to the grain silo; A material dropping channel, wherein the material dropping channel is respectively connected to the grain elevator and the grain silo; A grain suction fan, the grain suction fan is placed above the material dropping channel to remove impurities from the grains passing through the material dropping channel, the grain suction fan comprises a fan housing, an air inlet housing connected to the fan housing and disposed on one side of the fan housing, a impurity removal housing connected to the fan housing and disposed on the other side opposite to the fan housing, and an impeller mechanism disposed inside the fan housing; The material dropping channel is connected to the air inlet housing through an air inlet provided at the top thereof; The air regulating part includes an air regulating baffle, and the air regulating baffle is arranged between the blanking channel and the air inlet shell. The size of the air inlet is adjusted by the air regulating baffle, thereby controlling the exhaust air volume.

2. A seed collecting device as claimed in claim 1, characterized in that: The air adjusting part includes an air adjusting bracket, which is used to support the air adjusting baffle, and the air adjusting bracket connects the air adjusting baffle and the top plate where the air inlet is located; the air adjusting bracket includes a first bending plate and a second bending plate, the first bending plate is connected to the air adjusting baffle, and the second bending plate is connected to the top plate.

3. A seed collecting device as claimed in claim 2, characterized in that: The air regulating baffle is provided with an regulating slot, and the regulating slot is arranged along the forward direction of the harvester; a limiting pin is arranged on the air regulating bracket, and the limiting pin is placed in the regulating slot; the air regulating baffle slides around the limiting pin along the setting position of the regulating slot to block the air inlet and change the size of the air inlet, thereby adjusting the amount of exhaust air.

4. A seed collecting device as claimed in claim 3, characterized in that: The fan housing includes a first panel and a first back panel that are arranged opposite to each other, and a first connecting wall arranged between the first panel and the first back panel, and the two sides of the first connecting wall are respectively connected to the first panel and the first back panel; the air inlet housing includes a second connecting wall and a second back panel that is arranged parallel to the first panel and the first back panel.

5. A seed collecting device as claimed in claim 4, characterized in that: The impeller mechanism includes an impeller shaft and blades, the blades are arranged at one end of the impeller shaft and are evenly distributed along the rotation direction of the impeller shaft, and the blades are placed in the fan housing; one end of the blades arranged on the impeller shaft is connected to the first panel, and the other end is placed in the air inlet housing and connected to the second back plate.

6. A seed collecting device as claimed in claim 5, characterized in that: The impeller mechanism is connected to the grain elevator, a first sprocket is arranged on the side where the impeller shaft is connected to the second back plate, an elevator sprocket is arranged on the outer side of the shell of the grain elevator, and the first sprocket is connected to the elevator sprocket.

7. A seed collecting device as claimed in claim 6, characterized in that: One or more first fixing ears are set at the edge of the first panel, and one or more second fixing ears are correspondingly set at one end of the first connecting wall connected to the first panel. The setting direction of the second fixing ears is perpendicular to the installation direction of the first connecting wall, and the first fixing ears are connected to the second fixing ears.

8. A seed collecting device as claimed in claim 7, characterized in that: The grain bin is arranged on the inner side of the material discharge channel, and the impurity discharge shell extends to the outer side of the grain bin for impurity discharge.

9. A harvester, characterized in that: It comprises a grain collecting device as described in any one of claims 1-8.

10. A harvester, characterized in that: The harvester includes a grain suction fan as described in any one of claims 1 to 8, a grain blower, an elevator debris suction fan, and an elevator debris blower.

Images