Cotton feeding pipeline structure, pneumatic cotton collection and conveying system, and cotton picking equipment

Abstract

The object of the present invention is to provide a cotton conveying pipeline structure, a pneumatic cotton collection and conveying system and a cotton picking device including the structure, which can effectively protect the internal cotton materials and component structures when the pipeline mechanism connected to the cotton conveying pipe is blocked. The cotton conveying pipeline structure includes two parts: a cotton conveying pipeline and a pneumatic pipeline; the cotton conveying pipeline is integrally a hollow tube extending in the vertical direction, the cotton conveying pipeline includes a cotton outlet port and a cotton inlet port, the pneumatic pipeline includes a main pipe section and a first branch pipe section and a second branch pipe section led out backward from the main pipe section, wherein the first branch pipe section extends backward and is communicated with the cotton inlet port, and the second branch pipe section is led out from the main pipe section and communicated to the middle position of the cotton conveying pipeline and is communicated with the inside of the cotton conveying pipeline. A guiding part is formed at the end of the second branch pipe section for guiding the gas to flow upward in the cotton conveying pipe from bottom to top.

Description

Technical Field

[0001] The invention relates to the field of cotton picking and harvesting equipment, in particular to a cotton conveying pipeline structure and a pneumatic cotton collecting and conveying system and cotton picking equipment comprising the structure. Background Art

[0002] With the continuous increase in cotton planting area, the traditional manual picking mode needs to recruit a large number of cotton picking laborers from all over the country, and the working environment is poor and the labor intensity is high, making it difficult to adapt to large-scale planting models. Mechanized cotton picking has received more and more attention and application as a new type of cotton picking method. The usual cotton picker conveying system consists of two parts: a blower and a cotton conveying pipe. The common cotton conveying method is that the blower generates a positive pressure airflow that is diverted through a diversion pipe to the air outlet in the middle of each cotton conveying pipe for high-speed spraying, generating negative pressure at the front end of the air outlet, sucking the cotton picked in the cotton picking head into the cotton conveying pipe, and generating positive pressure at the rear end of the air outlet, thereby lifting the cotton and conveying it backward into the cotton box. For example, a conveying structure of a cotton harvester row device disclosed in the Chinese invention patent document with publication number CN100366139C utilizes the above principle to realize the movement of cotton materials from the picking head to the cotton storage box.

[0003] During the actual operation of the above-mentioned cotton harvester, it should be noted that due to the complex field environment for planting cotton, as the cotton picking head located at the front side collects and picks cotton, some impurities such as gravel, branches and leaves will enter the interior of the picking device. At this time, the impurity particles can easily cause the local mechanism to jam and operate poorly, causing the cotton entry rate to decrease and the air intake obstruction under the head to increase; at the same time, when these impurity particles accumulate and block the cotton discharge port, causing the cross-sectional area of ​​the cotton discharge port to decrease, the air intake obstruction under the head will also increase. If the above situation occurs, and the original air flow rate is still used to push the cotton with a slower feed rate and the local blockage area inside the head, it will easily cause the cotton fibers to be pulled and damaged, and the internal head of the head to have serious collision and wear problems.

[0004] In response to the above problems, the present invention provides a cotton conveying pipeline structure that can effectively protect internal cotton materials and component structures when the pipeline mechanism connected to the cotton conveying pipe is blocked, and a pneumatic cotton collecting and conveying system and cotton picking equipment including the structure. Summary of the invention

[0005] The present invention provides a cotton conveying pipeline structure which can effectively protect internal cotton materials and component structures when a pipeline mechanism connected to the cotton conveying pipeline is blocked, and a pneumatic cotton collecting and conveying system including the structure.

[0006] The above technical object of the present invention is achieved by the following technical solutions:

[0007] A cotton conveying pipeline structure includes two parts: a cotton conveying pipeline for conveying cotton materials and a pneumatic pipeline for blowing air into the cotton conveying pipeline to drive the cotton materials to move; the cotton conveying pipeline is integrally a hollow tube extending in the vertical direction, and the cotton conveying pipeline includes a cotton outlet port located at the upper end for connecting to the inlet of the cotton storage box and a cotton inlet port located at the lower end for connecting to the outlet of the cotton picking head. The pneumatic pipeline includes a main pipe section at the front end and a first branch pipe section and a second branch pipe section led out from the main pipe section backward. The first branch pipe section extends backward and communicates with the cotton inlet port, so that the air flow blown out by the first branch pipe section can pass through the cotton picking head and then be guided to flow to the cotton inlet port and enter the cotton conveying pipeline from bottom to top. The second branch pipe section is led out from the main pipe section and communicates with the middle position of the cotton conveying pipeline and is internally connected to the cotton conveying pipeline. A guiding portion is formed at the end of the second branch pipe section for guiding the gas blown out by the second branch pipe section to flow from bottom to top along the extending direction of the cotton conveying pipeline.

[0008] Preferably, taking the position where the second branch pipe section is connected to the cotton conveying pipeline as a dividing point, the cotton conveying pipeline is divided into two mutually connected parts: an upper cotton conveying pipe section and a lower cotton conveying pipe section, and the internal diameter of the second branch pipe section is larger than the internal diameter of the first branch pipe section.

[0009] Preferably, at the connection position where the extending direction of the pipeline in the pneumatic pipeline is changed, the pipeline is in an arc shape.

[0010] Preferably, an interface section is provided at the lower part of the cotton conveying pipeline and bends and extends toward the side of the cotton picking head. The cotton inlet port is arranged at the end of the interface section, and a dust removal section for depositing impurities is formed between the interface section and the main body of the cotton conveying pipeline.

[0011] Preferably, a dust removal opening for discharging impurities outward is opened on the outer side of the dust removal section, and a cover plate is movably installed at the dust removal opening.

[0012] A pneumatic cotton collection and conveying system includes the above-mentioned cotton conveying pipeline structure, and further includes a cotton picking head, an air pump device and a cotton collection box connected to the cotton conveying pipeline structure; a purging channel is formed inside the cotton picking head, the feed port of the purging channel is connected to the end of the first branch pipe section, and the discharge port of the purging channel is connected to the cotton inlet port; the air pump device is connected and installed at the front end of the main pipe section, and the cotton collection box is arranged above the cotton conveying pipeline and connected to the cotton outlet port.

[0013] Preferably, a box door is movably installed on the side of the cotton picking head by a hinged connection, and the box door can rotate around a central axis extending in the vertical direction to realize the opening and closing action.

[0014] A cotton picking device includes an equipment carrying platform, the pneumatic cotton collection and conveying system is installed on the carrying platform, and a traveling system for driving the equipment to move is installed at the bottom of the equipment carrying platform.

[0015] Preferably, a support connecting frame is arranged at the front end of the equipment carrying platform. The pneumatic cotton collection and conveying system includes multiple groups of the cotton picking heads and the cotton conveying pipelines, and the upper sections of several cotton conveying pipelines extend upward simultaneously and are connected and led into the interior of the cotton collection box.

[0016] In summary, the present invention can achieve the following multiple beneficial effects:

[0017] 1. Based on the common vacuum suction type cotton conveying pipeline, the cotton conveying pipeline structure provided in the present invention correlates the pipeline part for forming the suction effect with the pipeline part for pushing and conveying the cotton material inside the cotton picking head, forming a structure in which the main pipeline section directly connected to the air pump device branches into a first branch pipe section and a second branch pipe section. During the actual working process, if the cotton picking head becomes blocked and the cotton moving inside it is not flowing smoothly, since the resistance of the air flow inside the second branch pipe section leading to the inside of the cotton picking head becomes larger at this time, the air flow discharged from the main pipe section will automatically adjust the distribution between the first branch pipe section and the second branch pipe section. Compared with the normal working state, the gas flowing inside the second branch pipe section will decrease at this time, and the reduced part of the air flow will flow through the first branch pipe section. Through this adjustment and change of the working state, on the one hand, inside the cotton picking head, it can effectively reduce the pushing and pressing effect on the cotton material and the cotton stripping mechanism due to the air flow, and on the other hand, the increased part of the air flow in the first branch pipe section will directly enter the upper section of the cotton conveying pipeline without pulling the entangled and blocked cotton material, thus effectively reducing the wear or damage generated by the internal components of the cotton picking head as a whole.

[0018] 2. After the cotton picking equipment operates for a certain period of time, small impurities such as gravel and sand will accumulate in the cotton conveying pipeline. Since these impurities are mainly deposited in the lower cotton conveying pipe section connected to the first branch pipe section, the available flowing air in the pipeline part for pushing the cotton material inside the cotton picking head to move will also decrease accordingly. At this time, since the density of these impurity materials deposited at the lower part of the lower cotton conveying pipe section is relatively large and the air flow here decreases correspondingly, the air flow thrust received by these impurities is not sufficient to lift them to the position where the first branch pipe section is connected to the cotton conveying pipeline, so that these impurities are deposited at the lower part of the lower cotton conveying pipe section, playing a role in initially removing impurities during the process of picking cotton into the box.

[0019] 3. In the cotton conveying pipeline structure provided in the embodiment of the present invention, by controlling the pipe diameters of the first branch pipe section and the second branch pipe section, the resistance of the gas flow in the first branch pipe section is always greater than the resistance of the gas flow in the second branch pipe section, so that the effect of initially purging the cotton inside the cotton picking head and screening the impurities is much smaller than the effect of lifting and pushing the cotton material upward after the two parts of the air flow converge in the upper cotton conveying pipe, further improving the initial screening effect of the picked cotton material and preventing a large amount of impurities from entering the cotton box and increasing the difficulty of subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1Schematic diagram of the overall structure of the cotton feeding pipeline structure in the embodiment;

[0021] Figure 2 Enlarged schematic diagram of the partial structure of the impurity removal section in the cotton feeding pipeline structure;

[0022] Figure 3 Schematic diagram of the structure of the cotton picking head included in the pneumatic cotton collection and conveying system;

[0023] Figure 4 Schematic diagram of the internal air flow guidance when the cotton feeding pipeline structure is cooperatively connected with the cotton picking head;

[0024] Figure 5 Schematic diagram of the overall structure of the pneumatic cotton collection and conveying system equipped with an air pump device;

[0025] Figure 6 Schematic diagram of the side structure of the pneumatic cotton collection and conveying system;

[0026] Figure 7 Schematic diagram of the side view of the partial structure of the cotton picking equipment;

[0027] Figure 8 Schematic diagram of the three-dimensional view of the partial structure of the cotton picking equipment.

[0028] In the figure:

[0029] 1 - Cotton feeding pipeline, 101 - Cotton outlet port, 102 - Cotton inlet port, 1a - Interface section;

[0030] 2 - Pneumatic pipeline, 201 - Main pipe section, 202 - First branch pipe section, 203 - Second branch pipe section, 2a - Guiding section;

[0031] 3 - Upper cotton feeding pipe section;

[0032] 4 - Lower cotton feeding pipe section;

[0033] 5 - Impurity removal section, 501 - Impurity removal opening, 502 - Covering plate;

[0034] 6 - Cotton picking head, 601 - Blowing channel, 6a - Feeding port, 6b - Discharging port, 6c - Box door;

[0035] 7 - Air pump device;

[0036] 8 - Cotton collection box;

[0037] 9 - Bearing platform, 9a - Support connecting frame. Specific implementation mode

[0038] The following specific embodiments are merely explanations of the present invention and do not limit the present invention. After reading this specification, those skilled in the art can make modifications to these embodiments without creative contributions as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0039] This solution is achieved through the following technical means:

[0040] Embodiment: In this embodiment, a cotton conveying pipeline structure applicable to a pneumatic cotton collection and conveying system is given. First, it is necessary to explain the overall structural layout of the pneumatic cotton collection and conveying system therein. This system includes a cotton picking head 6 installed at the front end, an air pump device 7 located at the rear, and a cotton collection box 8 located above. These aforementioned parts are all connected to each other through the cotton conveying pipeline structure.

[0041] The cotton conveying pipeline structure therein includes a cotton conveying pipeline 1 for conveying cotton materials and a pneumatic pipeline 2 for blowing air into the cotton conveying pipeline 1 to drive the cotton materials to move. Specifically, the cotton conveying pipeline 1 is a hollow tubular shape extending in the vertical direction as a whole, and is formed by connecting an upper cotton conveying pipe section 3 and a lower cotton conveying pipe section 4 by welding. The cotton conveying pipeline 1 is set in an upright state as a whole. Its upper and lower openings are respectively a cotton outlet port 101 for connecting to the inlet of the cotton collection box 8 and a cotton inlet port 102 located at the lower end for connecting to the outlet of the cotton picking head 6. When the cotton materials pass through the cotton conveying pipeline 1 from bottom to top, it can realize the lifting of the cotton materials in the vertical direction while conveying the cotton materials from the cotton picking head 6 to the inside of the cotton collection box 8.

[0042] The aforementioned pneumatic pipeline 2 part includes a main pipe section 201 at the front end and a first branch pipe section 202 and a second branch pipe section 203 led out from the main pipe section 201 backward. An air pump device 7 capable of continuously blowing air into the inside is installed at the front end of the main pipe section 201 here. The air flow blown out by the air pump device 7 can be split at the intersection of the first branch pipe section 202 and the second branch pipe section 203, and then respectively enter the first branch pipe section 202 and the second branch pipe section 203 to play different roles.

[0043] It should also be noted here that a blowing channel 601 is formed inside the cotton picking head 6. The feed port 6a of the blowing channel 601 is directly connected to the end of the first branch pipe section 202, enabling the air flow in the first branch pipe section 202 to enter the inside of the cotton picking head 6. Inside the cotton picking head 6, the blowing channel 601 is not entirely formed by pipeline structures. Specifically, when the cotton plant is cut off at the stem position by the picking head and enters the inside of the cotton picking head 6 along with the push of the chain belt, at this time, the cotton stripping device installed inside the cotton picking head 6 can strip the cotton material from the cotton plant stem, and then the cotton material is wound and temporarily stored on the cylindrical cotton stripper. For a more detailed cotton stripping process, reference can be made to the conveying structure of a cotton harvester row device disclosed in the Chinese invention patent document with the publication number CN100366139C, which will not be elaborated here.

[0044] At this time, a part of the air flow introduced from the first branch pipe section 202 into the cotton picking head 6 will blow the cotton stripper from top to bottom, causing the cotton material to separate from the cotton stripper and move downward, accumulating and temporarily storing inside a temporary storage cavity. It should be noted here that due to the guiding and blocking effects of the internal structure of the cotton picking head 6, although a very small amount of the air flow introduced from the first branch pipe section 202 will escape and leak to the entrance side of the cotton plant, most of the air flow will still flow toward the cotton inlet port 102 with a larger opening at the rear side. At the same time, during this process, the air flow will drive the cotton material separated from the cotton stripper to move into the inside of the cotton conveying pipeline 1.

[0045] For the aforementioned second branch pipe section 203, its radial dimension is larger than that of the first branch pipe section 202. After being led out from the main pipe section 201, the second branch pipe section 203 is connected to the position between the upper cotton conveying pipe section 3 and the lower cotton conveying pipe section 4. At this position, since the second branch pipe section 203 is introduced into the inside of the cotton conveying pipeline 1 from the side, the original flow direction of the air flow in the second branch pipe section 203 cannot be parallel to the extension direction of the cotton carding pipeline. Then, at this time, it may occur that the air flow collides with the inner wall of the cotton carding pipeline, generating noise and turbulent flow, and even a part of the air flow flowing from top to bottom may hinder the upward movement of the cotton material inside the cotton conveying pipeline 1. Considering this problem, a guiding portion 2a is formed at the end of the second branch pipe section 203 to first change the air flow direction inside the second branch pipe section 203, so as to guide the gas blown out from the second branch pipe section 203 to flow upward along the extension direction of the cotton conveying pipeline 1.

[0046] By controlling the diameters of the first branch pipe section 202 and the second branch pipe section 203, the inner diameter of the second branch pipe section 203 is made larger than that of the first branch pipe section 202. At the same time, since the air flow in the second branch pipe section 203 needs to lead to the inside of the cotton picker head 6 for purging and pushing the cotton material, after considering the above structural layout, the flow resistance of the gas inside the second branch pipe section 203 will be greater than that of the gas inside the first branch pipe section 202. At this time, all the air flow introduced into the main pipe section 201 by the air pump device 7 will automatically be distributed between the first branch pipe section 202 and the second branch pipe section 203, so that the flow velocity and flow rate of the air flow in the first branch pipe section 202 are both greater than those in the second branch pipe section 203. Then, in this state, the air flow inside the second branch pipe section 203 will first pre-lift the cotton material in the lower cotton conveying pipe section 4, but the lifting force at this place is not sufficient to continuously lift all the cotton material collected by the cotton picker heads 6 through the entire cotton conveying pipeline 1; however, if the cotton material can be pre-lifted to the position where the first branch pipe section 202 is connected to the cotton conveying pipeline 1 by controlling the gas flow rate, then the gas flow rate at this position is the sum of that in the first branch pipe section 202 and the second branch pipe section 203, and the lifting force that can be generated is also much greater than the force generated by the air flow in the lower cotton conveying pipe section 4, so that a more powerful pushing effect on the cotton material can be achieved at this position, enabling it to continue to lift upward and pass through the remaining longer upper cotton conveying pipe section 3, and making all the cotton material enter the inside of the cotton collection box 8.

[0047] In order to reduce the energy loss at the positions where the air flow changes direction in each part of the pipeline, the connection positions where the pipeline extension direction changes in the pneumatic pipeline 2 can be made into an arc shape.

[0048] As an optimization, an interface section 1a extending in a bent manner toward the side of the cotton picking head 6 is further provided at the lower part of the cotton conveying pipeline 1. The cotton inlet port 102 is arranged at the end of the interface section 1a. An impurity removal section 5 for depositing impurities is formed between the interface section 1a and the main body of the cotton conveying pipeline 1. An impurity removal opening 501 for discharging impurities outward is formed on the outer side of the impurity removal section 5, and a cover plate 502 is movably installed at the impurity removal opening 501. Here, the cover plate 502 and the cotton conveying pipeline 1 can be connected and fixed by means of hinge or insertion to achieve the relative airtightness between the inside and the outside of the cotton conveying pipeline 1 and prevent air leakage. When a small amount of impurities such as broken sand and dust enter the cotton conveying pipeline 1 along with the operation of the cotton picking head 6, since the density of these impurities is much greater than that of the cotton material, and the pushing force generated by the gas in the lower cotton conveying pipe section 4 is small and insufficient to lift these impurities to the connection position of the second branch pipe section 203, these impurities will accumulate in the aforementioned impurity removal section 5. After a certain period of use, only by opening the cover plate 502 at this place can the impurities be conveniently discharged outward, so that some impurities in the cotton material are screened out at the initial picking stage of the cotton plant, making the cotton material entering the cotton box contain less impurities and being more convenient for subsequent processing.

[0049] Further preferably, a box door 6c is movably installed on the side of the cotton picking head 6 by means of hinge connection. The box door 6c can rotate around a central axis extending in the vertical direction to realize the opening and closing actions. When the box door 6c is closed, the purging channel 601 inside the cotton picking head 6 can enter a relatively airtight state, enabling the air flow and the cotton material to flow and be conveyed inside; when the box door 6c is opened, the purging channel 601 can enter a relatively open state, facilitating the staff to remove larger sundries inside or perform maintenance and repair on the internal components.

[0050] When the above pneumatic cotton collection and conveying system is integrally installed on the equipment bearing platform 9 provided with a traveling system for driving the equipment to move at the bottom, a cotton picking device capable of moving and walking by itself is obtained. At the front of the cotton picking device, a support connecting frame 9a extending forward and convexly can be installed and provided. On this support connecting frame 9a, multiple groups of the cotton picking heads 6 and the cotton conveying pipelines 1 are installed at the same time. The cotton inlet ports 102 below each cotton conveying pipeline 1 are connected to an independent cotton picking head 6, and the outlet ports above these cotton conveying pipelines 1 are all connected to the top inlet position of the rear cotton collection box 8. These cotton picking heads 6 and cotton conveying pipelines 1 can share the same set of pneumatic pipelines 2 and air pump devices 7, or can be connected and arranged in a one-to-one combination corresponding manner. When the cotton picking device is operating, all the picked and collected cotton materials will be conveyed upward through the respective cotton conveying pipelines 1 to the upper inlet position of the cotton collection box 8 and fall into the box, completing the conveying and collection stage of the cotton materials.

[0051] As described above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cotton conveying pipeline structure, characterized in that: it comprises two parts, namely a cotton conveying pipeline (1) for conveying cotton materials and a pneumatic pipeline (2) for blowing air into the cotton conveying pipeline (1) to drive the cotton materials to move; the cotton conveying pipeline (1) is integrally a hollow tube extending in the vertical direction, and the cotton conveying pipeline (1) includes a cotton outlet port (101) located at the upper end for connecting to the inlet of the cotton storage box and a cotton inlet port (102) located at the lower end for connecting to the outlet of the cotton picking head (6). The pneumatic pipeline (2) includes a main pipe section (201) at the front end and a first branch pipe section (202) and a second branch pipe section (203) led out from the main pipe section (201) backward. The first branch pipe section (202) extends backward and communicates with the cotton inlet port (102), so that the air flow blown out by the first branch pipe section (202) can flow through the cotton picking head (6) and then be guided to the cotton inlet port (102) and enter the cotton conveying pipeline (1) from bottom to top. The second branch pipe section (203) is led out from the main pipe section (201) and communicates with the middle position of the cotton conveying pipeline (1) and is internally communicated with the cotton conveying pipeline (1). A guiding part (2a) is formed at the end of the second branch pipe section (203) for guiding the gas blown out by the second branch pipe section (203) to flow from bottom to top along the extending direction of the cotton conveying pipeline (1); Taking the position where the second branch pipe section (203) is connected to the cotton conveying pipeline (1) as a dividing point, the cotton conveying pipeline (1) is divided into two interconnected parts, namely an upper cotton conveying pipe section (3) and a lower cotton conveying pipe section (4), and the internal diameter of the second branch pipe section (203) is larger than the internal diameter of the first branch pipe section (202); An interface section (1a) is arranged at the lower part of the cotton conveying pipeline (1) and bends and extends toward the side of the cotton picking head (6), and the cotton inlet port (102) is arranged at the end of the interface section (1a). An impurity removal section (5) for depositing impurities is formed between the interface section (1a) and the main body of the cotton conveying pipeline (1).

2. The cotton conveying pipeline structure according to claim 1, characterized in that: the pipeline at the connection position where the extending direction of the pneumatic pipeline (2) is changed is in an arc shape.

3. The cotton conveying pipeline structure according to claim 1, characterized in that: An impurity removal opening (501) for discharging impurities outward is arranged on the outer side of the impurity removal section (5), and a cover plate (502) is movably installed at the impurity removal opening (501).

4. A pneumatic cotton collection and conveying system, characterized in that: It includes a cotton feeding pipeline structure as described in any one of claims 1 to 3, and further includes a cotton picking head (6), an air pump device (7), and a cotton collection box (8) connected to the cotton feeding pipeline structure; a purging channel (601) is formed inside the cotton picking head (6), an inlet (6a) of the purging channel (601) is connected to the end of the first branch pipe section (202), and an outlet (6b) of the purging channel (601) is connected to the cotton inlet port (102); the air pump device (7) is connected and installed at the front end of the main pipe section (201), and the cotton collection box (8) is arranged above the cotton feeding pipeline (1) and connected to the cotton outlet port (101).

5. The pneumatic cotton collection and conveying system according to claim 4, characterized in that: a box door (6c) is movably installed on the side of the cotton picking head (6) by a hinged connection manner, and the box door (6c) can rotate around a central axis extending in the vertical direction to realize an opening and closing action.

6. A cotton picking device, characterized in that: it includes an equipment carrying platform (9), the pneumatic cotton collection and conveying system as described in any one of claims 4 to 5 is installed on the carrying platform (9), and a traveling system for driving the equipment to move is installed at the bottom of the equipment carrying platform (9).

7. The cotton picking device according to claim 6, characterized in that: a support connecting frame (9a) is arranged at the front end of the equipment carrying platform (9), the pneumatic cotton collection and conveying system includes multiple groups of the cotton picking heads (6) and the cotton feeding pipeline (1), and upper sections of several cotton feeding pipelines (1) extend upward simultaneously and are connected and led into the interior of the cotton collection box (8).

Images