Corn harvesting impurity removal fan capable of achieving air volume adjustment

Abstract

The utility model relates to a corn harvesting impurity removal fan capable of achieving air volume adjustment. The corn harvesting impurity removal fan comprises an adjustable air inlet structure. A cover plate mounting hole is formed in the side wall, close to the air inlet grille plate, of a machine shell of the impurity removal fan body. A plurality of threaded holes are uniformly distributed in the periphery of the cover plate mounting hole in the circumferential direction; the adjustable air inlet structure comprises a cover plate and an air volume adjusting disc. The cover plate is composed of a cover plate body and outer connecting lugs. At least one group of air inlet through holes are formed in the cover plate main body, a plurality of fan-shaped air inlet holes are uniformly distributed on the circumference of each group of air inlet through holes, and a bolt through hole is formed in the center of each group of fan-shaped air inlet holes; a screw through hole is formed in the outer end of each outer connecting lug; the cover plate main body is embedded in the cover plate mounting hole, and the screw through holes in the plurality of outer connecting lugs are aligned with the plurality of threaded holes in the casing one by one and are connected through screws; a plurality of fan-shaped adjusting holes are evenly distributed in the circumference of the air volume adjusting disc, and a central bolt through hole of the air volume adjusting disc is aligned with a bolt through hole in the center of the corresponding fan-shaped through hole and fixedly connected with the fan-shaped through hole through bolts and nuts. The main body of the impurity removal fan is convenient to adjust.

Description

Technical Field

[0001] The utility model belongs to the field of agricultural machinery, in particular to a corn harvester debris removal system, and in particular relates to a corn harvester debris removal fan capable of realizing air volume adjustment. Background Art

[0002] In a corn harvester, an exhaust fan body is installed on the top wall of the elevator barrel near the upper end. This exhaust fan body is used to discharge debris laterally. The air intake of the exhaust fan body is achieved through an air intake grille with a fixed ventilation volume. The air intake grille is fixed to the top wall of the elevator barrel at the front end where the exhaust fan body is installed. This exhaust method has the problem of being unable to adjust the air intake volume. In actual harvesting operations, the moisture content of corn stalks and the size of corn cobs vary in different harvesting areas or at different harvesting times. For example, when the corn stalks are green, a larger air volume is required to discharge the corn stalks; when the corn cobs are small, too much air volume can easily cause corn loss, so the air volume needs to be smaller.

[0003] The existing air intake method that cannot achieve air volume adjustment cannot well meet the needs of various harvesting operations, has poor adjustability, and reduces the applicability of the corn harvester. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, the utility model provides a corn harvesting and debris removal fan which has a simple structure, is easy to adjust and can realize air volume regulation.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0006] A corn harvester exhaust fan capable of adjusting air volume comprises an exhaust fan body, the exhaust fan body being fixedly mounted on the top wall of the corn harvester's lifting cylinder near the upper end, and an air inlet grille being fixedly mounted on the top wall of the lifting cylinder near the front end of the exhaust fan body, characterized in that: an adjustable air inlet structure is also provided; the adjustable air inlet structure is integrally arranged on one side of the casing of the exhaust fan body near the air inlet grille; a cover plate mounting hole is provided on the side wall of the casing of the exhaust fan body near the air inlet grille; a plurality of threaded holes are uniformly distributed circumferentially around the outer periphery of the cover plate mounting hole; the adjustable air inlet structure comprises a cover plate and an air volume Adjusting disk; the cover plate is composed of a cover plate main body and an external connection ear part; at least one group of air inlet holes is provided on the cover plate main body, each group of air inlet holes is composed of a plurality of fan-shaped air inlet holes uniformly distributed along the circumferential direction, and a bolt through hole is provided in the center of each group of fan-shaped air inlet holes; a plurality of external connection ears extending outward are provided along the circumferential direction on the front side of the edge of the cover plate main body, and a screw through hole is provided at the outer end of each external connection ear; the cover plate main body is embedded in the cover plate mounting hole, and the screw through holes on the plurality of external connection ears on the cover plate are aligned one by one with the plurality of threaded holes of the casing of the exhaust fan main body, and the cover plate is fixed to the casing of the exhaust fan main body by installing screws;

[0007] The air volume adjustment disk is provided with a plurality of fan-shaped adjustment holes evenly distributed along the circumference in a square shape; the number of the fan-shaped adjustment holes is consistent with the number of each group of fan-shaped air inlet holes on the cover plate, and a bolt through hole is provided in the center of the air volume adjustment disk; an air volume adjustment disk is provided on the front of each group of air inlet holes on the cover plate, and the bolt through hole in the center of the air volume adjustment disk is aligned with the bolt through hole in the center of the corresponding fan-shaped air inlet hole, and the air volume adjustment disk is fixedly connected to the cover plate by passing bolts and nuts locked on the ends of the bolts.

[0008] Moreover, the outer diameter of the fan-shaped adjustment hole is consistent with the outer diameter of the fan-shaped air inlet hole, and the inner diameter of the fan-shaped adjustment hole is consistent with the inner diameter of the fan-shaped air inlet hole.

[0009] The advantages and positive effects of the utility model are:

[0010] 1. The utility model retains the main air inlet structure of the existing air inlet grille and installs an adjustable air inlet structure at the front end of the casing of the exhaust fan body. The air volume is adjusted by the relative position of the fan-shaped adjustment hole and the fan-shaped air inlet hole. When the air volume needs to be adjusted, it is only necessary to loosen the bolts connecting the cover plate and the air volume adjustment disk and rotate the position of the air volume adjustment disk. It has the advantages of easy adjustment and good applicability, solves the air volume requirements of different regions and different harvest periods, and is convenient for users to operate across regions.

[0011] 2. The utility model can adjust the air volume according to the actual harvesting situation, thus avoiding the occurrence of incomplete removal of impurities and loss of corn. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the adjustable air inlet structure of the utility model. DETAILED DESCRIPTION

[0014] The structure of the present invention will be further described below with reference to the accompanying drawings and through examples. It should be noted that the present examples are descriptive rather than restrictive.

[0015] A corn harvester with adjustable air volume, see Figure 1 and Figure 2 The exhaust fan body 1 is fixedly mounted on the top wall of the corn harvester's lifting drum 4 near the upper end. An air inlet grille 3 is fixedly mounted on the top wall of the lifting drum near the front end of the exhaust fan body to provide the exhaust fan body with a fixed air volume. The invention is that, in addition to the fixed air inlet, an adjustable air inlet structure 2 is also provided. The adjustable air inlet structure is provided on the side of the exhaust fan body's casing near the air inlet grille. Specifically, a cover plate mounting hole is provided on the side wall of the exhaust fan body's casing near the air inlet grille. A plurality of threaded holes are evenly distributed around the outer periphery of the cover plate mounting hole. The adjustable air inlet structure includes a cover plate 2.1 and an air volume adjustment disk 2.2. The cover plate is composed of a cover plate main body and an external connecting ear. The shape and size of the cover plate main body are consistent with the shape and size of the cover plate mounting hole. A circular cover plate, a rectangular cover plate, etc. can be used. In the present invention, a rectangular cover plate is preferably used. At least one set of air inlet holes is provided on the cover plate body. Each set of air inlet holes is composed of a plurality of fan-shaped air inlet holes 2.1.1 evenly distributed along the circumference, with bolt holes provided at the center of each fan-shaped air inlet hole. Multiple external connecting lugs 2.1.2 are provided circumferentially on the front edge of the cover plate body, each with a screw hole provided at the outer end. The cover plate body is embedded in the cover plate mounting hole. The screw holes on the multiple external connecting lugs on the cover plate are aligned one by one with the multiple threaded holes on the exhaust fan body's casing. The cover plate is fixed to the exhaust fan body's casing by installing screws.

[0016] In the present invention, there are preferably two groups of air inlet holes on the cover plate body, and the two groups of air inlet holes are arranged on the left and right.

[0017] The air volume adjustment disk is provided with a plurality of fan-shaped adjustment holes 2.2.1 evenly distributed in a square pattern along the circumference. The number of fan-shaped adjustment holes is consistent with the number of each group of fan-shaped air inlet holes on the cover plate. A bolt through hole is provided in the center of the air volume adjustment disk. An air volume adjustment disk is provided on the front of each group of air inlet holes on the cover plate. The bolt through hole in the center of the air volume adjustment disk is aligned with the bolt through hole in the center of the corresponding fan-shaped air inlet hole, and the air volume adjustment disk and the cover plate are fixedly connected by bolts and nuts 2.3. By changing the relative position of the fan-shaped adjustment holes and the fan-shaped air inlet holes along the circumferential direction, the size of the ventilation area can be adjusted, thereby adjusting the size of the air inlet and achieving the purpose of air volume adjustment.

[0018] In the above structure, the outer diameter of the fan-shaped adjustment hole is consistent with the outer diameter of the fan-shaped air inlet hole, and the inner diameter of the fan-shaped adjustment hole is consistent with the inner diameter of the fan-shaped air inlet hole. The fan-shaped adjustment hole and the fan-shaped air inlet hole can be completely staggered, and air only needs to enter through the air inlet grille plate.

[0019] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A corn harvester exhaust fan capable of adjusting air volume, comprising an exhaust fan body, the exhaust fan body being fixedly mounted on the top wall of a corn harvester's elevator cylinder near the upper end, an air inlet grille being fixedly mounted on the top wall of the elevator cylinder near the front end of the exhaust fan body, and characterized in that: An adjustable air inlet structure is also provided; the adjustable air inlet structure is integrally arranged on one side of the casing of the exhaust fan body close to the air inlet grille; a cover plate mounting hole is provided on the side wall of the casing of the exhaust fan body close to the air inlet grille; a plurality of threaded holes are uniformly distributed circumferentially around the outer periphery of the cover plate mounting hole; the adjustable air inlet structure includes a cover plate and an air volume adjustment disk; the cover plate is composed of a cover plate main body and an external connection ear part; at least one group of air inlet holes is provided on the cover plate main body, and each group of air inlet holes The hole is composed of a plurality of fan-shaped air inlet holes uniformly distributed along the circumferential direction, and a bolt through hole is provided at the center of each group of fan-shaped air inlet holes; a plurality of external connecting ears extending outward are provided along the circumferential direction on the front side of the edge of the cover plate body, and a screw through hole is provided at the outer end of each external connecting ear; the cover plate body is embedded in the cover plate mounting hole, and the screw through holes on the plurality of external connecting ears on the cover plate are aligned one by one with the plurality of threaded holes on the casing of the exhaust fan body, and the cover plate is fixed to the casing of the exhaust fan body by installing screws; The air volume adjustment disk is provided with a plurality of fan-shaped adjustment holes evenly distributed along the circumference in a square shape; the number of the fan-shaped adjustment holes is consistent with the number of each group of fan-shaped air inlet holes on the cover plate, and a bolt through hole is provided in the center of the air volume adjustment disk; an air volume adjustment disk is provided on the front of each group of air inlet holes on the cover plate, and the bolt through hole in the center of the air volume adjustment disk is aligned with the bolt through hole in the center of the corresponding fan-shaped air inlet hole, and the air volume adjustment disk is fixedly connected to the cover plate by passing bolts and nuts locked on the ends of the bolts.

2. The corn harvesting and impurity removal fan capable of adjusting air volume according to claim 1 is characterized in that: The outer diameter of the fan-shaped adjustment hole is consistent with the outer diameter of the fan-shaped air inlet hole, and the inner diameter of the fan-shaped adjustment hole is consistent with the inner diameter of the fan-shaped air inlet hole.

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