Blowable rapeseed screening equipment for rapeseed combine harvester

Abstract

The invention relates to the technical field of rapeseed screening, and particularly discloses a blow-off type rapeseed screening device for a rape combine harvester, which comprises an outer box body of a square structure, a control panel is fixedly mounted on the outer surface of the front side of the outer box body, and a mounting frame fixed with the rape combine harvester is fixedly mounted at the bottom of the outer box body; a feeding pipe connected with a discharging port of the combine harvester is fixedly installed on the rear side of the upper portion of the outer box body, a cleaning door is rotationally installed on the left side of the outer box body through a hinge, and a discharging hopper of an inclined structure is fixedly installed at the lower end of the front side of the outer box body. According to the blow-off type rapeseed screening equipment for the rape combine harvester, the novel structural design is adopted, air is sprayed out of the blow-off spray head through the air blower in the rapeseed falling-in process, so that rape shells contained in rapeseeds are blown into the collecting box through air flow, and the purpose of removing light impurities is achieved.

Description

Technical Field

[0001] This invention relates to the field of agricultural production technology, specifically to a blowable rapeseed screening device for a rapeseed combine harvester. Background Technology

[0002] Rapeseed is an oilseed crop that can be pressed for oil and is also one of the common sources of edible oil. With the large-scale popularization of mechanization, rapeseed harvesting is now generally carried out using automated rapeseed combine harvesters. Rapeseed combine harvesters are usually used in conjunction with screening equipment. The harvested rapeseed is screened, packaged, stored and transported.

[0003] In the prior art, Chinese Patent Publication No. CN110961345A discloses a screening device for rapeseed processing, relating to the technical field of rapeseed processing equipment. This screening device for rapeseed processing includes a base plate, with casters installed at the four corners of the bottom of the base plate. Two fixed long plates are welded to the top of the base plate, and a sliding rod is welded between the opposing outer surfaces of the two fixed long plates near the top edge. A sliding long cylinder is slidably fitted onto the outer surface of the sliding rod, and a first connecting rod is welded to the top of the sliding long cylinder near one side edge. When removing rapeseed from the first and second screen frames, the second L-shaped rod is rotated, causing it to be removed from the L-shaped plate, facilitating the opening of the sealing door. This allows for the removal of residual rapeseed from the first and second screen frames, making it convenient for workers to remove the remaining rapeseed.

[0004] The aforementioned device uses a sieve frame to screen rapeseed. However, during the actual use of the combine harvester to harvest rapeseed, a large amount of rapeseed husks will be mixed in with the rapeseed. A large amount of rapeseed husks can easily clog the sieve frame, thus affecting subsequent screening operations, so frequent cleaning is required.

[0005] For example, in the prior art, Chinese Patent Publication No. CN113088373A discloses a screening and cleaning device for rapeseed, including a fixed box, a fixed plate, a screening mechanism, and a vibration mechanism. The screening mechanism includes a filter cylinder, a screening screen, and a drive assembly. The vibration mechanism includes a first gear, a driven assembly, and a vibration assembly. This screening and cleaning device for rapeseed uses the centrifugal force generated when the filter cylinder rotates to throw the main body out, thereby achieving screening and cleaning of the main body. At the same time, the vibration assembly vibrates the filter cylinder to prevent clogging and improve screening efficiency. The connecting plate is connected by a spring sheet to achieve flexible rotation of the filter cylinder, thereby reducing vibration of the motor, protecting the motor, and improving its service life. Here, multiple mechanisms are linked by the same drive source, which improves the practicality of use.

[0006] The above-mentioned device uses a screening screen to perform screening operations. However, in actual use, rapeseed has high requirements for moisture content when stored after harvesting. That is, rapeseed with high moisture content will germinate during storage, resulting in losses. Summary of the Invention

[0007] The purpose of this invention is to provide a blowable rapeseed screening device for rapeseed combine harvesters, so as to solve the problems mentioned in the background art of inconvenience in screening rapeseed husks and inability to dry rapeseed.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a blowable rapeseed screening device for a rapeseed combine harvester, comprising a square-shaped outer casing, a control panel fixedly mounted on the front outer surface of the outer casing, and a mounting frame fixedly mounted on the bottom of the outer casing for fixing to the rapeseed combine harvester, and further comprising: A feed pipe connected to the discharge port of the combine harvester is fixedly installed on the upper rear side of the outer box, and a cleaning door is installed on the left side of the outer box by means of a hinge. A discharge hopper with an inclined structure is fixedly installed on the lower front side of the outer box. The lower part of the outer casing is equipped with a guide plate that is higher at the back and lower at the front, and the front end of the guide plate is rotatably connected to the outer casing. A screening screen for screening out fine sand and gravel in rapeseed is fixedly installed in the middle of the guide plate. The rear side of the outer casing is provided with a blowing and cleaning mechanism for cleaning light impurities in rapeseed. The blowing and cleaning mechanism includes a blowing nozzle fixedly installed inside the outer casing and a collection box fixedly installed in the middle of the outer casing. The outside of the collection box is equipped with a drying mechanism for drying rapeseed, which includes a heating box fixedly installed on the outer surface of the front and rear sides of the collection box.

[0009] Preferably, the blowing and cleaning mechanism further includes a blower fixedly installed outside the outer casing, and the blower and the blowing nozzle are connected to each other by a delivery pipe.

[0010] Preferably, a dispersing plate is provided above the blowing nozzle, and the positions of the dispersing plate and the feed pipe are vertically corresponding to each other, and the dispersing plate is generally in the form of a grid structure.

[0011] Preferably, two symmetrically arranged connecting rods are rotatably mounted on the outer rear surface of the dispersion plate, and a movable slider is rotatably mounted on the top of the connecting rod, and a reciprocating screw for driving the slider is threaded through the slider.

[0012] Preferably, the reciprocating lead screw drives the cam roller to rotate synchronously via a transmission belt installed on its left side, and the cam roller is rotatably installed inside the lower end of the outer housing, and the cam roller and the guide plate are pressed against each other.

[0013] Preferably, a vibration spring is fixedly installed on the lower surface of the guide plate, and the front end of the guide plate corresponds to the position of the discharge hopper.

[0014] Preferably, the drying mechanism further includes a connecting pipe fixedly installed outside the conveying pipe, and the side of the collection box has through holes distributed at equal intervals, and a drying nozzle is installed through the lower surface of the heating box, while an electric heater is fixedly installed on the outer surface of the collection box.

[0015] Preferably, two turning rollers for turning rapeseed are rotatably installed at the lower end of the outer casing, and a driven gear is coaxially fixedly installed at the rear end of the turning rollers.

[0016] Preferably, a corresponding movable rod is provided below the driven gear, and a driving rack that meshes with the driven gear is fixedly installed on the upper surface of the movable rod.

[0017] Preferably, the movable rod and the limiting block slide through each other, and the limiting block is fixedly installed on the inner side wall of the outer casing. A connecting rod is rotatably installed at the top of the movable rod, and the lower end of the connecting rod is rotatably connected to the upper surface of the guide plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the rapeseed screening equipment for the rapeseed combine harvester adopts a novel structural design, the specific details of which are as follows: 1. The rapeseed harvested in the combine harvester is conveyed into the outer box through the feed pipe. Then, the rapeseed is screened by the screening screen in the guide plate at the lower end of the outer box to remove the fine sand and gravel impurities mixed in with the rapeseed. During the process of the rapeseed falling in, the blower sprays air out from the blowing nozzle, thereby using the airflow to blow the rapeseed husks contained in the rapeseed into the collection box, thereby achieving the purpose of removing light impurities. Furthermore, during the process of rapeseed entering the outer casing, the motor drives the reciprocating screw to rotate. The rotation of the reciprocating screw drives the movable slider installed on its external through thread to move, which in turn drives the connecting rod to rotate. The connecting rod drives the dispersing plate to move back and forth, which disperses the rapeseed and improves the effect of blowing away light impurities. Furthermore, during the rotation of the reciprocating screw, the cam roller is driven to rotate via the transmission belt, causing the cam roller to press against the guide plate. This, combined with the vibration spring below the guide plate, causes the guide plate to vibrate up and down, thereby improving the screening effect of the screening screen in the guide plate.

[0019] 2. A drying mechanism is set up to transfer heat from the engine compartment to the blow-off nozzles through a connecting pipe to dry the rapeseed. Then, the air is heated again by the electric heater in the heating box and then sprayed out from the drying nozzles below to dry the rapeseed again. Furthermore, during the up-and-down vibration of the guide plate, the connecting rod mounted above it moves up and down, thereby causing the connecting rod to drive the movable rod to move back and forth. At this time, the active rack and driven gear above the movable rod mesh with each other, thereby causing the driven gear to drive the turning roller to rotate, turning the rapeseed above the guide plate, thus improving the drying effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the outer casing of the present invention; Figure 4 This is a schematic diagram of the dispersion plate structure of the present invention; Figure 5 This is a schematic diagram of the connection relationship between the reciprocating lead screw and the moving slider of the present invention; Figure 6 This is a schematic diagram of the lower surface structure of the guide plate of the present invention; Figure 7 This is a schematic diagram of the internal structure of the heating box of the present invention; Figure 8 This is a schematic diagram of the tilting roller structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a schematic diagram of the connection relationship between the driving rack and the driven gear of the present invention.

[0021] In the diagram: 1. Outer casing; 2. Control panel; 3. Mounting bracket; 4. Feed pipe; 5. Cleaning door; 6. Discharge hopper; 7. Guide plate; 8. Screening screen; 9. Blowing nozzle; 10. Blower; 11. Conveying pipe; 12. Collection box; 13. Dispersion plate; 14. Connecting rod; 15. Moving slider; 16. Reciprocating screw; 17. Drive belt; 18. Cam roller; 19. Vibration spring; 20. Connecting pipe; 21. Heating box; 22. Drying nozzle; 23. Through hole; 24. Electric heater; 25. Tilting roller; 26. Driven gear; 27. Movable rod; 28. Drive rack; 29. ​​Limit block; 30. Connecting rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-3 To achieve the purpose of screening and removing impurities from rapeseed, this embodiment provides the following technical solution, specifically disclosing: a square-shaped outer casing 1, a control panel 2 fixedly installed on the front outer surface of the outer casing 1, and a mounting frame 3 fixedly installed at the bottom of the outer casing 1 for use with a rapeseed combine harvester; a feed pipe 4 connected to the discharge port of the combine harvester fixedly installed on the upper rear side of the outer casing 1; a cleaning door 5 hinged to the left side of the outer casing 1; and an inclined discharge hopper 6 fixedly installed at the lower front end of the outer casing 1. A rear-high, front-low structure is installed inside the lower part of the outer casing 1. The guide plate 7 is rotatably connected to the outer casing 1 at its front end, and a screening screen 8 for screening fine sand and gravel in rapeseed is fixedly installed in the middle position of the guide plate 7. A blowing and cleaning mechanism for cleaning light impurities in rapeseed is provided inside the rear side of the outer casing 1. The blowing and cleaning mechanism includes a blowing nozzle 9 fixedly installed inside the outer casing 1 and a collection box 12 fixedly installed in the middle position inside the outer casing 1. The blowing and cleaning mechanism also includes a blower 10 fixedly installed outside the outer casing 1, and the blower 10 and the blowing nozzle 9 are connected to each other by a conveying pipe 11.

[0024] When using the device, firstly, the outer casing 1 is fixedly installed to the rapeseed combine harvester using the mounting frame 3. Then, the rapeseed combine harvester is used to harvest the rapeseed. The harvested rapeseed is transported into the outer casing 1 through the feed pipe 4. During the process of the rapeseed falling into the outer casing 1, the blower 10 is turned on. The blower 10 is used to spray air through the conveying pipe 11 from the blow-off nozzle 9. The airflow blows the light impurities (such as rapeseed husks and rapeseed stalks) in the rapeseed into the collection box 12 for collection. Then, the heavier rapeseed falls above the guide plate 7. The screening screen 8 in the middle of the guide plate 7 is used to screen the fine sand and gravel in the rapeseed. The thoroughly screened rapeseed is finally discharged from the discharge hopper 6.

[0025] Example 2: Please refer to Figures 4-6To improve the effectiveness of the blowing mechanism, this embodiment provides the following technical solution: the dispersing plate 13 disperses the incoming rapeseed, thereby making the blowing mechanism more thorough in cleaning light impurities. Specifically, a dispersing plate 13 is provided above the blowing nozzle 9, and the positions of the dispersing plate 13 and the feed pipe 4 correspond vertically. The dispersing plate 13 has a grid-like structure. Two symmetrically arranged connecting rods 14 are rotatably installed on the rear outer surface of the dispersing plate 13. A movable slider 15 is rotatably installed at the top of the connecting rod 14. A reciprocating screw 16 for driving the slider 15 is threaded through the slider 15. The reciprocating screw 16 drives the cam roller 18 to rotate synchronously through the transmission belt 17 installed on its left side. The cam roller 18 is rotatably installed inside the lower end of the outer housing 1, and the cam roller 18 and the guide plate 7 are pressed against each other. A vibration spring 19 is fixedly installed on the lower surface of the guide plate 7, and the front end of the guide plate 7 corresponds to the position of the discharge hopper 6.

[0026] During the process of blowing away light impurities, the motor is turned on to drive the reciprocating screw 16 to rotate. As the reciprocating screw 16 rotates, it drives the movable slider 15, which is installed on its external thread, to move. This causes the movable slider 15 to drive the connecting rod 14 to rotate. The connecting rod 14 drives the dispersing plate 13 to move back and forth, so that the dispersing plate 13 disperses the falling rapeseed, thereby improving the effect of blowing away light impurities. During the rotation of the reciprocating screw 16, the cam roller 18 is driven to rotate through the transmission belt 17, so that the cam roller 18 squeezes the guide plate 7. At this time, the vibration spring 19 below the guide plate 7 causes the guide plate 7 to vibrate up and down, thereby improving the screening effect of the screening screen 8.

[0027] Example 3: Please refer to Figures 7-10To address the problem that traditional devices cannot dry rapeseed, this embodiment provides the following technical solution: hot air is sprayed from a drying mechanism to dry the harvested rapeseed, thereby reducing its moisture content and facilitating subsequent storage. Specifically, a drying mechanism for drying rapeseed is provided on the outside of the collection box 12. The drying mechanism includes heating boxes 21 fixedly installed on the outer surfaces of the front and rear sides of the collection box 12. The drying mechanism also includes a connecting pipe 20 fixedly installed outside the conveying pipe 11 (the connecting pipe 20 is connected to the engine compartment of the combine harvester). The sides of the collection box 12 have evenly spaced through holes 23, and the lower surface of the heating box 21 is perforated with... The drying nozzle 22 is installed, and an electric heater 24 is fixedly installed on the outer surface of the collection box 12. Two turning rollers 25 for turning rapeseed are rotatably installed at the lower end of the outer box 1. A driven gear 26 is coaxially fixedly installed at the rear end of the turning rollers 25. A corresponding movable rod 27 is provided below the driven gear 26. A drive rack 28 that meshes with the driven gear 26 is fixedly installed on the upper surface of the movable rod 27. The movable rod 27 and the limiting block 29 slide through each other. The limiting block 29 is fixedly installed on the inner side wall of the outer box 1. A connecting rod 30 is rotatably installed at the top of the movable rod 27. The lower end of the connecting rod 30 is rotatably connected to the upper surface of the guide plate 7.

[0028] During operation, heat from the harvester's engine compartment is transferred to the conveying pipe 11 via the connecting pipe 20, and finally sprayed out from the blow-off nozzle 9 to achieve preliminary drying of the rapeseed. Afterwards, airflow is discharged into the heating box 21 through the through hole 23 in the collection box 12. The air is then reheated by the electric heater 24 fixedly installed on the outer surface of the collection box 12. The heated air is then sprayed out from the drying nozzle 22 below the heating box 21 to further dry the rapeseed. Simultaneously, the guide plate 7 vibrates up and down, causing the connecting rod 30 rotating on its upper surface to move synchronously. The movable rod 27 moves back and forth (the movable rod 27 slides through the limiting block 29 on the inner side wall of the outer box 1, so that the movable rod 27 can only move back and forth under the limiting action of the limiting block 29). At this time, the active rack 28 above the movable rod 27 meshes with the driven gear 26, so that the active rack 28 drives the driven gear 26 to rotate. The driven gear 26 rotates the turning roller 25, and the rotation of the turning roller 25 turns the rapeseed passing above the guide plate 7, so that the rapeseed has more contact with the drying hot air, thereby achieving a better drying effect.

[0029] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blowable rapeseed screening device for a rapeseed combine harvester, comprising a square outer casing (1), a control panel (2) fixedly mounted on the front outer surface of the outer casing (1), and a mounting frame (3) fixedly mounted on the bottom of the outer casing (1) for use with the rapeseed combine harvester, characterized in that, Also includes: The upper rear side of the outer box (1) is fixedly installed with a feed pipe (4) connected to the discharge port of the combine harvester, and the left side of the outer box (1) is equipped with a cleaning door (5) by means of a hinge, and the lower front side of the outer box (1) is fixedly installed with a discharge hopper (6) in an inclined structure. The lower end of the outer box (1) is equipped with a guide plate (7) that is higher at the back and lower at the front, and the front end of the guide plate (7) is rotatably connected to the outer box (1), and a screening screen (8) for screening fine sand and gravel in rapeseed is fixedly installed in the middle position of the guide plate (7). The outer casing (1) is provided with a blowing and cleaning mechanism for cleaning light impurities in rapeseed. The blowing and cleaning mechanism includes a blowing nozzle (9) fixedly installed inside the outer casing (1) and a collection box (12) fixedly installed in the middle position inside the outer casing (1). The outside of the collection box (12) is provided with a drying mechanism for drying rapeseed, which includes a heating box (21) fixedly installed on the outer surfaces of the front and rear sides of the collection box (12).

2. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 1, characterized in that: The blowing and cleaning mechanism also includes a blower (10) fixedly installed outside the outer casing (1), and the blower (10) and the blowing nozzle (9) are connected to each other by a delivery pipe (11).

3. The blowable rapeseed screening equipment for a rapeseed combine harvester according to claim 2, characterized in that: A dispersing plate (13) is provided above the blow-off nozzle (9), and the positions of the dispersing plate (13) and the feed pipe (4) correspond vertically to each other, and the dispersing plate (13) has a grid-like structure.

4. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 3, characterized in that: Two symmetrically arranged connecting rods (14) are rotatably mounted on the outer rear surface of the dispersion plate (13), and a movable slider (15) is rotatably mounted on the top of the connecting rod (14), and a reciprocating screw (16) for driving its movement is installed through the thread inside the movable slider (15).

5. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 4, characterized in that: The reciprocating screw (16) drives the cam roller (18) to rotate synchronously through the transmission belt (17) installed on its left side. The cam roller (18) is rotatably installed inside the lower end of the outer housing (1), and the cam roller (18) and the guide plate (7) are pressed against each other.

6. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 5, characterized in that: A vibration spring (19) is fixedly installed on the lower surface of the guide plate (7), and the front end of the guide plate (7) corresponds to the position of the discharge hopper (6).

7. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 1, characterized in that: The drying mechanism also includes a connecting pipe (20) fixedly installed outside the conveying pipe (11), and the side of the collection box (12) is provided with through holes (23) distributed at equal intervals, and the lower surface of the heating box (21) is provided with a drying nozzle (22), while the outer surface of the collection box (12) is fixedly installed with an electric heater (24).

8. The blowable rapeseed screening device for a rapeseed combine harvester according to claim 1, characterized in that: The lower end of the outer casing (1) is rotatably equipped with two turning rollers (25) for turning the rapeseed, and the rear end of the turning rollers (25) is coaxially fixedly equipped with a driven gear (26).

9. A blowable rapeseed screening device for a rapeseed combine harvester according to claim 8, characterized in that: Below the driven gear (26) is a corresponding movable rod (27), and the upper surface of the movable rod (27) is fixedly mounted with a driving rack (28) that meshes with the driven gear (26).

10. A blowable rapeseed screening device for a rapeseed combine harvester according to claim 9, characterized in that: The movable rod (27) and the limiting block (29) slide through each other, and the limiting block (29) is fixedly installed on the inner side wall of the outer box (1). The top of the movable rod (27) is rotatably installed with a connecting rod (30), and the lower end of the connecting rod (30) is rotatably connected to the upper surface of the guide plate (7).

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