Residue barrier, picking head, and cotton harvester

Abstract

The application discloses a residual film blocking device, a picking head and a cotton picker, and relates to the technical field of agricultural machinery, which comprises an upper airflow distribution shell and a lower airflow distribution shell, the upper airflow distribution shell is internally provided with an upper airflow distribution cavity, the upper airflow distribution cavity is used for being communicated with the bottom end of the rear wind column of the picking head, a first slit jet air outlet and a second slit jet air outlet are formed in the upper airflow distribution shell, the first slit jet air outlet is used for discharging air below the first impurity falling port of the picking head to form a first jet air curtain, and the second slit jet air outlet is used for discharging air below the second impurity falling port of the picking head to form a second jet air curtain; the lower airflow distribution shell is internally provided with a lower airflow distribution cavity, and a third slit jet air outlet is formed in the lower airflow distribution shell, the third slit jet air outlet is used for discharging air below the third impurity falling port of the picking head to form a third jet air curtain; and the application can effectively reduce the content of residual film fragments mixed into seed cotton.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a residual film barrier, a picking head, and a cotton harvester. Background Technology

[0002] Polyethylene agricultural mulch film, widely used in current agricultural production, poses significant environmental pollution problems. Due to overuse and untimely recycling, residual film accumulates in the soil year after year, leading to increasingly serious pollution in cotton fields. This problem is particularly prominent during mechanized cotton harvesting: when cotton harvesters are operating, fragments of residual film on the ground are easily sucked into the harvesting head through the waste disposal port on the bottom plate, mixing with the seed cotton. These mixed film fragments further break down during subsequent processing of the seed cotton, forming even smaller fragments, greatly increasing the difficulty of cleaning and ultimately severely affecting the processed quality of the cotton.

[0003] The current problem of residual film mixed with seed cotton is generally addressed by removing the residual film using foreign fiber cleaning equipment during cotton processing, which reduces cotton processing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a residual film barrier, a picking head, and a cotton picker to solve the problems existing in the prior art and effectively reduce the content of residual film fragments mixed in seed cotton.

[0005] To achieve the above objectives, the present invention provides the following solution: This invention provides a residual film barrier, comprising an upper airflow distribution shell and a lower airflow distribution shell, the upper airflow distribution shell being positioned above the lower airflow distribution shell; the upper airflow distribution shell has an upper airflow distribution cavity inside, the upper airflow distribution cavity being used to communicate with the bottom end of the rear airflow column of the harvesting head; the upper airflow distribution shell has a first slit jet outlet and a second slit jet outlet, both of which are connected to the upper airflow distribution cavity; the first slit jet outlet is used to discharge air below the first debris outlet of the harvesting head to form a second... A jet air curtain is formed by discharging air below the second debris discharge port of the harvesting head. The lower air distribution shell has a lower air distribution cavity inside. A channel is provided between the lower air distribution shell and the upper air distribution shell to connect the lower air distribution cavity and the upper air distribution cavity. A third jet air discharge port is provided on the lower air distribution shell and is connected to the lower air distribution cavity. The third jet air discharge port is used to discharge air below the third debris discharge port of the harvesting head to form a third jet air curtain.

[0006] Preferably, the upper airflow distribution shell is provided with an air intake port, which is connected to the upper airflow distribution cavity and is used to connect to the bottom end of the rear wind column of the picking head.

[0007] Preferably, the top surface of the upper airflow distribution shell has an insertion protrusion, and the insertion protrusion is provided with the air intake interface. The insertion protrusion is used to insert into the bottom end of the rear air column of the picking head.

[0008] Preferably, the upper airflow distribution shell is fixedly mounted on the bottom plate of the cotton removal shell, and the lower airflow distribution shell is fixedly connected to the upper airflow distribution shell.

[0009] Preferably, the lower airflow distribution shell and the upper airflow distribution shell are integrally formed.

[0010] The present invention also provides a picking head, including a cotton hull, a cotton hulling roller, a rear air column, and a residual film barrier as described above. The bottom end of the rear air column is used to communicate with the upper airflow distribution chamber of the residual film barrier, and the top end of the rear air column is used to communicate with the fan of the cotton harvester. The cotton hulling roller and the rear air column are both disposed inside the cotton hull, and the bottom plate of the cotton hull is provided with a first debris discharge port, a second debris discharge port, and a third debris discharge port.

[0011] Preferably, it also includes an air intake pipe and a front air column. One end of the air intake pipe is fixedly connected to and communicates with the fan of the cotton harvester. The front air column is fixedly installed inside the cotton stripping shell. The top end of the front air column and the top end of the rear air column are both fixedly connected to and communicate with the air intake pipe. The bottom end of the front air column communicates with the internal space of the cotton stripping shell. The rear air column is located behind the front air column.

[0012] Preferably, the front end of the cotton hull is provided with a picking spindle, which is used to pick cotton.

[0013] The present invention also provides a cotton harvester, including a fan and a picking head as described above.

[0014] Preferably, it also includes a cotton conveying channel and a cotton collecting box. One end of the cotton conveying channel is fixedly connected and communicates with the cotton shell of the picking head, and the other end of the cotton conveying channel is fixedly connected and communicates with the cotton collecting box; the cotton conveying channel is connected to the fan.

[0015] The present invention achieves the following technical effects compared to the prior art: The residual film barrier, picking head, and cotton picker provided by this invention are equipped with an upper airflow distribution shell and a lower airflow distribution shell. The upper airflow distribution shell contains an upper airflow distribution cavity, and the lower airflow distribution shell contains a lower airflow distribution cavity. A channel is provided between the lower and upper airflow distribution shells. In use, the upper airflow distribution cavity is connected to the bottom end of the rear air column of the picking head, receiving the airflow delivered by the rear air column. The airflow is then divided into three streams: one stream is directed to the first slit jet outlet, which discharges air below the first debris outlet of the picking head to form a uniform and stable first jet air curtain; another stream is directed to the second slit jet outlet, which discharges air below the second debris outlet of the picking head to form a uniform and stable second jet air curtain; and the third stream enters the lower airflow distribution cavity through the channel and is directed to the third slit jet outlet, which discharges air below the third debris outlet of the picking head to form a uniform and stable second jet air curtain. The third jet air curtain, with its graded distribution design, ensures the stability and uniformity of airflow, reduces pressure loss, increases airflow velocity, strengthens the coverage area of ​​the air curtain, and enhances adaptability to different working conditions. This effectively resists the suction force of negative pressure on surface suspended matter at the first, second, and third waste inlets, cutting off the path of residual film being sucked into these inlets. This achieves the purpose of blocking residual film, reducing dust accumulation, and thus effectively reducing the content of residual film fragments mixed into the seed cotton, reducing the residual film mixing rate, lowering residual film cleaning costs, and improving cotton quality, thereby achieving the goal of improving quality and efficiency. Compared with existing technologies, this device achieves highly efficient blocking of residual film through scientific airflow distribution and jet control, providing a reliable solution for improving cotton harvesting quality and seed cotton cleanliness. The air curtain jet is uniform, stable, adaptable, and has a large coverage area. It does not accumulate dust, does not affect the normal operation of the cotton harvester, and has a significant effect on blocking residual film. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the harvesting head provided by the present invention; Figure 2 A bottom view of the harvesting head provided by the present invention; Figure 3 A schematic diagram of the residual film barrier provided by the present invention; Figure 4 This is a schematic diagram of the residual film barrier provided by the present invention from another direction; Figure 5 This is a side view of the residual film barrier provided by the present invention; Figure 6 for Figure 5 Schematic diagram of the cross section at point AA; Figure 7 This is a schematic diagram showing the layout of the first, second, and third slit jet outlets. In the diagram: 1-Residual film barrier, 11-Air inlet, 12-Upper airflow distribution shell, 13-Lower airflow distribution shell, 14-First slit jet outlet, 15-Second slit jet outlet, 16-Third slit jet outlet, 2-Picking head, 3-Air inlet pipe, 4-Rear air column, 5-Cotton conveying channel, 6-Fan, 7-Bottom plate of cotton hull removal, 8-Third waste outlet, 9-First waste outlet, 10-Second waste outlet. Detailed Implementation

[0018] 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.

[0019] The purpose of this invention is to provide a residual film barrier, a picking head, and a cotton picker to solve the problems existing in the prior art and effectively reduce the content of residual film fragments mixed in seed cotton.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 like Figures 1 to 7As shown, this embodiment provides a residual film barrier 1, including an upper airflow distribution shell 12 and a lower airflow distribution shell 13, with the upper airflow distribution shell 12 positioned above the lower airflow distribution shell 13. The upper airflow distribution shell 12 has an upper airflow distribution cavity inside, which is used to communicate with the bottom end of the rear airflow column 4 of the harvesting head 2. The upper airflow distribution shell 12 has a first slit jet outlet 14 and a second slit jet outlet 15, both of which are connected to the upper airflow distribution cavity. The first slit jet outlet 14 is used to direct airflow towards the first debris discharge port 9 of the harvesting head 2. The first jet air curtain is formed by air outlet 15. The second jet air outlet 15 is used to discharge air below the second debris outlet 10 of the harvesting head 2 to form a second jet air curtain. The lower air distribution shell 13 has a lower air distribution cavity inside. A channel is provided between the lower air distribution shell 13 and the upper air distribution shell 12. The channel can connect the lower air distribution cavity and the upper air distribution cavity. A third jet air outlet 16 is opened on the lower air distribution shell 13. The third jet air outlet 16 is connected to the lower air distribution cavity. The third jet air outlet 16 is used to discharge air below the third debris outlet 8 of the harvesting head 2 to form a third jet air curtain.

[0022] The residual film barrier 1 provided in this embodiment is provided with an upper airflow distribution shell 12 and a lower airflow distribution shell 13. The upper airflow distribution shell 12 has an upper airflow distribution cavity, and the lower airflow distribution shell 13 has a lower airflow distribution cavity. A channel is provided between the lower airflow distribution shell 13 and the upper airflow distribution shell 12. In use, the upper airflow distribution cavity is connected to the bottom end of the rear air column 4 of the harvesting head 2 to receive the airflow delivered by the rear air column 4 of the harvesting head 2. Then the airflow is divided into three streams: one stream is directed to the first... The first jet outlet 14 directs air downwards towards the first debris discharge opening 9 of the harvesting head 2 to form a uniform and stable first jet air curtain. Another jet is directed to the second jet outlet 15, which directs air downwards towards the second debris discharge opening 10 of the harvesting head 2 to form a uniform and stable second jet air curtain. A third jet enters the lower airflow distribution chamber through a channel and is directed to the third jet outlet 16, which directs air downwards towards the third debris discharge opening 8 of the harvesting head 2. The airflow is distributed in a square manner to form a uniform and stable third jet air curtain. This graded distribution design ensures the stability and uniformity of the airflow, reduces pressure loss, increases airflow velocity, strengthens the coverage of the air curtain, and enhances adaptability to different working conditions. This counteracts the suction force of the negative pressure at the first, second, and third debris discharge points 9, 10, and 8 on surface suspended matter, cutting off the path of residual film being drawn into these points. This achieves the purpose of blocking residual film, reducing dust accumulation, effectively reducing the content of residual film fragments mixed into the seed cotton, reducing the residual film mixing rate, lowering residual film cleaning costs, and improving cotton quality, thus achieving the goal of improving quality and efficiency. Compared with existing technologies, this device achieves highly efficient blocking of residual film through scientific airflow distribution and jet control, providing a reliable solution for improving cotton harvesting quality and seed cotton cleanliness. The air curtain jet is uniform, stable, adaptable, and has a large coverage area. It does not accumulate dust, does not affect the normal operation of the cotton harvester, and has a significant effect on blocking residual film.

[0023] As a preferred embodiment of this invention, the upper airflow distribution shell 12 is provided with an air intake port 11, which is connected to the upper airflow distribution cavity. The air intake port 11 is used to connect to the bottom end of the rear wind column 4 of the picking head 2 for easy use.

[0024] As a preferred embodiment of this invention, the top surface of the upper airflow distribution shell 12 has an insertion protrusion, and an air intake port 11 is provided on the insertion protrusion. The insertion protrusion is used to insert into the bottom end of the rear air column 4 of the picking head 2, which facilitates assembly.

[0025] As a preferred embodiment of this invention, the upper airflow distribution shell 12 is fixedly mounted on the bottom plate 7 of the cotton removal shell, and the lower airflow distribution shell 13 is fixedly connected to the upper airflow distribution shell 12, resulting in a compact structure and reduced space occupation.

[0026] As a preferred embodiment of this invention, the lower airflow distribution shell 13 and the upper airflow distribution shell 12 are integrally formed, which can improve the structural stability.

[0027] Example 2 This embodiment provides a picking head 2, including a cotton removal hull, a cotton removal roller, a rear air column 4, and a residual film barrier 1 as described in Embodiment 1. The bottom end of the rear air column 4 is used to communicate with the upper airflow distribution chamber of the residual film barrier 1, and the top end of the rear air column 4 is used to communicate with the fan 6 of the cotton harvester. The cotton removal roller and the rear air column 4 are both located inside the cotton removal hull. The bottom plate 7 of the cotton removal hull is provided with a first waste outlet 9, a second waste outlet 10, and a third waste outlet 8.

[0028] The harvesting head 2 provided in this embodiment is provided with an upper airflow distribution shell 12 and a lower airflow distribution shell 13. The upper airflow distribution shell 12 has an upper airflow distribution cavity, and the lower airflow distribution shell 13 has a lower airflow distribution cavity. A channel is provided between the lower airflow distribution shell 13 and the upper airflow distribution shell 12. In use, the upper airflow distribution cavity is connected to the bottom end of the rear air column 4 of the harvesting head 2 to receive the airflow delivered by the rear air column 4 of the harvesting head 2. Then the airflow is divided into three streams: one stream is directed to the first stream. The first jet outlet 14 discharges air downwards from the first debris discharge port 9 of the harvesting head 2 to form a uniform and stable first jet air curtain. Another jet is directed to the second jet outlet 15, which discharges air downwards from the second debris discharge port 10 of the harvesting head 2 to form a uniform and stable second jet air curtain. The third jet enters the lower airflow distribution chamber through a channel and is directed to the third jet outlet 16, which discharges air downwards from the third debris discharge port 8 of the harvesting head 2. The exhaust air forms a uniform and stable third jet air curtain. This graded distribution design ensures the stability and uniformity of the airflow, reduces pressure loss, increases airflow velocity, strengthens the coverage of the air curtain, and enhances adaptability to different working conditions. This counteracts the suction force of the negative pressure at the first, second, and third waste outlets (9, 10, and 8) on surface suspended matter, cutting off the path of residual film being drawn into these outlets. This achieves the purpose of blocking residual film, reducing dust accumulation, effectively reducing the content of residual film fragments mixed into the seed cotton, reducing the residual film mixing rate, lowering residual film cleaning costs, and improving cotton quality, thus achieving the goal of improving quality and efficiency. Compared with existing technologies, this device achieves highly efficient blocking of residual film through scientific airflow distribution and jet control, providing a reliable solution for improving cotton harvesting quality and seed cotton cleanliness. The air curtain jet is uniform, stable, adaptable, and has a large coverage area. It does not accumulate dust, does not affect the normal operation of the cotton harvester, and has a significant effect on blocking residual film.

[0029] As a preferred embodiment of this invention, the picking head 2 provided in this embodiment also includes an air duct 3 and a front air column. One end of the air duct 3 is fixedly connected to and communicates with the fan 6 of the cotton harvester. The front air column is fixedly installed inside the cotton stripping shell. The top end of the front air column and the top end of the rear air column 4 are both fixedly connected to and communicate with the air duct 3. The bottom end of the front air column communicates with the internal space of the cotton stripping shell. The rear air column 4 is placed behind the front air column. The air is drawn into the upper airflow distribution chamber by the rear air column 4, which effectively reduces the airflow loss in the cotton conveying channel 5 and the dust accumulation inside the residual film barrier 1, and increases the airflow rate entering the upper airflow distribution chamber and the cotton conveying channel 5, thereby improving the wind speed of the first jet air curtain, the second jet air curtain and the third jet air curtain and the cotton conveying efficiency of the cotton conveying channel 5.

[0030] In a preferred embodiment of this invention, a picking spindle is provided at the front end of the cotton hull, and the picking spindle is used to pick cotton.

[0031] Example 3 This embodiment provides a cotton harvester, including a fan 6 and a picking head 2 as described in Embodiment 2.

[0032] The cotton harvester provided in this embodiment is equipped with an upper airflow distribution shell 12 and a lower airflow distribution shell 13. The upper airflow distribution shell 12 has an upper airflow distribution cavity, and the lower airflow distribution shell 13 has a lower airflow distribution cavity. A channel is provided between the lower airflow distribution shell 13 and the upper airflow distribution shell 12. In use, the upper airflow distribution cavity is connected to the bottom end of the rear air column 4 of the picking head 2, and receives the airflow delivered by the rear air column 4 of the picking head 2. Then the airflow is divided into three streams: one stream is guided to the first slit. The first jet outlet 14 directs air downwards towards the first debris discharge port 9 of the harvesting head 2 to form a uniform and stable first jet air curtain. Another jet is directed to the second jet outlet 15, which directs air downwards towards the second debris discharge port 10 of the harvesting head 2 to form a uniform and stable second jet air curtain. A third jet enters the lower airflow distribution chamber through a channel and is directed to the third jet outlet 16, which directs air downwards towards the third debris discharge port 8 of the harvesting head 2. The exhaust air forms a uniform and stable third jet air curtain. This graded distribution design ensures the stability and uniformity of the airflow, reduces pressure loss, increases airflow velocity, strengthens the coverage of the air curtain, and enhances adaptability to different working conditions. This counteracts the suction force of the negative pressure at the first, second, and third waste outlets (9, 10, and 8) on surface suspended matter, cutting off the path of residual film being drawn into these outlets. This achieves the purpose of blocking residual film, reducing dust accumulation, effectively reducing the content of residual film fragments mixed into the seed cotton, reducing the residual film mixing rate, lowering residual film cleaning costs, and improving cotton quality, thus achieving the goal of improving quality and efficiency. Compared with existing technologies, this device achieves highly efficient blocking of residual film through scientific airflow distribution and jet control, providing a reliable solution for improving cotton harvesting quality and seed cotton cleanliness. The air curtain jet is uniform, stable, adaptable, and has a large coverage area. It does not accumulate dust, does not affect the normal operation of the cotton harvester, and has a significant effect on blocking residual film.

[0033] As a preferred embodiment of this invention, the cotton harvester provided in this embodiment also includes a cotton conveying channel 5 and a cotton collecting box. One end of the cotton conveying channel 5 is fixedly connected and communicates with the cotton hull of the picking head 2, and the other end of the cotton conveying channel 5 is fixedly connected and communicates with the cotton collecting box. The cotton conveying channel 5 is connected to the fan 6. The picking spindle at the front end of the cotton hull is responsible for picking cotton. Then the cotton hulling roller peels off the cotton and sends it into the cotton conveying channel 5. Under the action of the air conveying system, the negative pressure generated by the cotton conveying channel 5 and the positive pressure formed by the front air column work together to transport the cotton to the cotton collecting box.

[0034] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A residual membrane barrier, characterized in that: The system includes an upper airflow distribution shell and a lower airflow distribution shell, with the upper airflow distribution shell positioned above the lower airflow distribution shell. The upper airflow distribution shell contains an upper airflow distribution cavity, which communicates with the bottom end of the rear airflow column of the harvesting head. The upper airflow distribution shell has a first slit jet outlet and a second slit jet outlet, both of which communicate with the upper airflow distribution cavity. The first slit jet outlet discharges air below the first debris discharge point of the harvesting head to form a first jet air curtain, and the second slit jet outlet discharges air below the second debris discharge point of the harvesting head to form a second jet air curtain. The lower airflow distribution shell contains a lower airflow distribution cavity. A channel is provided between the lower airflow distribution shell and the upper airflow distribution shell, which connects the lower airflow distribution chamber and the upper airflow distribution chamber. The lower airflow distribution shell has a third slit jet outlet, which is connected to the lower airflow distribution chamber and is used to discharge air below the third debris outlet of the harvesting head to form a third jet air curtain. The upper airflow distribution shell has an air intake interface, which is connected to the upper airflow distribution chamber and is used to connect to the bottom end of the rear wind column of the harvesting head. The top surface of the upper airflow distribution shell has an insertion protrusion, on which the air intake interface is provided and is used to insert into the bottom end of the rear wind column of the harvesting head.

2. The residual membrane barrier according to claim 1, characterized in that: The upper airflow distribution shell is fixedly mounted on the bottom plate of the cotton removal shell, and the lower airflow distribution shell is fixedly connected to the upper airflow distribution shell.

3. The residual membrane barrier according to claim 2, characterized in that: The lower airflow distribution shell is integrally formed with the upper airflow distribution shell.

4. A harvesting head, characterized in that: The device includes a cotton removal hull, a cotton removal roller, a rear air column, and a residual film barrier as described in any one of claims 1 to 3. The bottom end of the rear air column is used to communicate with the upper airflow distribution chamber of the residual film barrier, and the top end of the rear air column is used to communicate with the fan of the cotton harvester. The cotton removal roller and the rear air column are both disposed inside the cotton removal hull, and the bottom plate of the cotton removal hull is provided with a first waste discharge port, a second waste discharge port, and a third waste discharge port.

5. The harvesting head according to claim 4, characterized in that: It also includes an air intake pipe and a front air column. One end of the air intake pipe is fixedly connected to and communicates with the fan of the cotton harvester. The front air column is fixedly installed inside the cotton removal shell. The top end of the front air column and the top end of the rear air column are both fixedly connected to and communicate with the air intake pipe. The bottom end of the front air column communicates with the internal space of the cotton removal shell. The rear air column is located behind the front air column.

6. The harvesting head according to claim 4, characterized in that: The front end of the cotton hull is equipped with a picking spindle, which is used to pick cotton.

7. A cotton harvester, characterized in that: Includes a fan and a harvesting head as described in any one of claims 4 to 6.

8. The cotton harvester according to claim 7, characterized in that: It also includes a cotton conveying channel and a cotton collecting box. One end of the cotton conveying channel is fixedly connected and communicates with the cotton shell of the picking head, and the other end of the cotton conveying channel is fixedly connected and communicates with the cotton collecting box; the cotton conveying channel is connected to the fan.

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