A negative pressure pepper harvesting machine

Abstract

This invention discloses a negative pressure pepper harvesting machine, including a harvesting device. The harvesting device includes a shell, a rotating blade, a side blade, fruit combing teeth, and a harvesting motor. The rear end of the shell is connected to a bellows, and the front end is open. The harvesting motor is installed on the side of the shell of the harvesting device. The rotating blade is installed at the open position of the shell of the harvesting device. One end of the rotating blade is connected to the harvesting motor, and the other end is connected to the shell of the harvesting device. The rotating blade includes a rotating shaft, on which a guide plate and a fruit combing brush are arranged. There are two guide plates, which are spirally distributed along the axial direction of the rotating shaft, and the rotation direction and pitch are the same. A spiral blade is arranged at the outer edge of each guide plate along its spiral direction. Two rows of fruit combing brushes are arranged, and the rotation direction and pitch of the two rows of fruit combing brushes are the same as the rotation direction and pitch of the guide plates. Fruit combing teeth are also arranged at the bottom of the open end of the shell.

Description

Technical Field

[0001] This invention relates to the field of pepper harvesting technology, specifically a negative pressure pepper harvesting machine. Background Technology

[0002] The harvesting of Sichuan peppercorns has always been a labor-intensive process in the Sichuan peppercorn industry. Traditionally, Sichuan peppercorn harvesting relies mainly on manual labor, which is not only inefficient but also physically demanding, especially during the peak harvest season when time is limited and labor costs are high. To address this issue, various mechanized Sichuan peppercorn harvesting equipment has emerged in recent years. Among them, the negative pressure Sichuan peppercorn harvester has gradually become one of the main mechanized equipment for Sichuan peppercorn harvesting due to its ease of operation and high harvesting efficiency.

[0003] Currently, the most common negative pressure pepper harvesting machines on the market are mainly of two types: shoulder-mounted and mobile platform. For example, CN202979683U discloses a shoulder-mounted pepper harvesting machine, which includes a power unit, a negative pressure fan, an absorption tower box, an absorption pipe, and a suction head. It uses the suction force generated by the negative pressure fan to replace manual harvesting, greatly reducing labor intensity and increasing efficiency by approximately 25 times compared to manual harvesting. CN110612814B discloses a dwarf pepper harvesting machine, which mainly includes a harvesting actuator, a suction-type pneumatic conveying system, a backpack box, and a mobile power supply. It enables mechanized harvesting of dwarf pepper in southwestern China, effectively freeing up labor and improving harvesting efficiency.

[0004] In addition, CN217308347U discloses a direct-harvest pneumatic suction pepper harvester with a movable platform. The device includes components such as a movable platform, a collection box, a fan, and a harvesting head. By using negative pressure in the collection box, the peppers harvested by the harvesting head are sucked into the collection box, improving the harvesting efficiency of peppers. CN216930926U discloses a negative pressure fruit harvester, including a screening barrel, a centrifugal fan, and an electric motor. By setting up optical sensors and blades to work together, the fruit and stem are cut, reducing manual operation and improving work efficiency.

[0005] However, existing negative pressure pepper harvesters still have some technical problems: On the one hand, the negative pressure of the negative pressure pepper harvester is suction, and the air direction is constant. During the negative pressure collection process, peppers are easy to stick to the pipes, causing blockages; on the other hand, traditional harvesting devices are mostly single-angle blades. The pepper harvesting operation is complex, and the harvesting angle is variable. Single-blade operation requires frequent changes in the position and angle of the harvesting device to adapt to the operation requirements, which is not conducive to efficient harvesting. The shoulder-mounted pepper harvester disclosed in CN102511243B controls the air volume through an air volume control valve before operation and does not change during operation. In essence, it is also a constant pressure operation.

[0006] Therefore, there is an urgent need for a negative pressure pepper harvesting machine that can solve the above-mentioned technical problems, effectively prevent pepper from clogging the pipes, adapt to multi-angle harvesting needs, and improve the efficiency and quality of pepper harvesting. Summary of the Invention

[0007] The technical problem to be solved by this invention is to provide a negative pressure pepper harvester to address the shortcomings of existing technologies. This overcomes the problem that traditional negative pressure pepper harvesters use constant negative pressure, causing peppers to stick to the pipes and cause blockages. It also addresses the problem that traditional harvesting devices mostly use single-angle blades for cutting, which requires frequent changes in the position and angle of the harvesting device to adapt to the operation requirements when the pepper harvesting operation is complex and the harvesting angle is variable, thus hindering efficient harvesting.

[0008] The technical solution adopted by this invention to solve its technical problem is:

[0009] A negative pressure pepper harvesting machine, comprising a shell, rotating blades, side blades, comb teeth, and a harvesting motor. The rear end of the shell is connected to a bellows, and the front end is open. The harvesting motor is mounted on the side of the shell, and the rotating blades are mounted at the open end of the shell. One end of the rotating blades is connected to the harvesting motor, and the other end is connected to the shell. The rotating blades include a rotating shaft, the rotation direction of which is perpendicular to the air inlet direction. A guide plate is provided on the rotating shaft. The fruit comb brush includes two air guide plates, which are spirally distributed along the axis of rotation and rotate in the same direction, either clockwise or counterclockwise, with the same pitch. Spiral blades are provided along the spiral direction at the outer edge of the air guide plates. The fruit comb brush is arranged in two rows, with the spiral direction of the two rows of fruit comb brushes being the same as that of the air guide plates and having the same pitch. At the same time, fruit comb teeth are also provided at the bottom of the open end of the outer shell. When the bristles of each fruit comb brush rotate to the position of the fruit comb teeth, they are exactly located between two adjacent teeth of the fruit comb teeth.

[0010] As a further technical solution, side blades are also provided on both sides of the opening of the outer shell, and side blades are also provided at both ends of the guide plate. The side blades at both ends of the guide plate cooperate with the side blades on both sides of the opening of the outer shell to form a scissor-like blade, which enables the entire device to achieve multi-angle cutting, reduces the need for angle adjustment of the picking operation position, and improves operation efficiency.

[0011] As a further technical solution, the wind box includes an air outlet, a filter screen, a harvesting motor speed controller, a fan motor speed controller, a battery compartment, a material compartment, a control compartment, and a pressurization compartment;

[0012] The top of the air box has an air outlet, and the side wall of the air box has an air inlet. The air outlet is connected to the blower. A filter screen is installed at the air outlet of the air box to filter peppercorns. A pressurization chamber is set below the filter screen and is located below the air inlet. Inside the air box, there are also battery compartments, control compartments, and material compartments. The harvesting motor speed controller and the blower motor speed controller are installed in the control compartment. The harvesting motor speed controller regulates the operating speed of the harvesting motor, and the blower motor speed controller regulates the operating speed of the blower motor.

[0013] As a further technical solution, the bottom of the pressurization chamber has a central opening, and the axis of the opening is in the same plane as the air inlet and air outlet. Being in the same plane facilitates the absorption of peppercorns, which fall into the hopper through the bottom opening of the pressurization chamber under the action of gravity.

[0014] As a further technical solution, the pressurization chamber is conical, with the upper diameter being larger than the lower diameter, thereby achieving a certain pressurization effect.

[0015] As a further technical solution, a hopper cover is provided at the bottom of the hopper.

[0016] As a further technical solution, the battery compartment is located at the top of the wind box, the control compartment is located at the bottom of the wind box, and the remaining space is a material hopper.

[0017] As a further technical solution, the air guide plate and the spiral blade are integrally formed.

[0018] As a further technical solution, the air guide plate and the spiral blade are detachably connected.

[0019] The beneficial effects of this invention are:

[0020] 1. The spiral blade used in the harvesting device is positioned at the edge of the spiral air guide plate. When cutting the peppercorns, the spiral blade engages with the outer shell of the harvesting device, rotating with the air guide plate. The cutting point changes with the rotation of the spiral blade, ensuring a single cut and avoiding repeated cutting that could damage the peppercorns. The spiral blade and air guide plate partially obstruct the opening of the harvesting shell, with the obstruction position changing as the air guide plate rotates. Consequently, the air inlet reciprocates left and right with the rotation of the air guide plate. This, in turn, affects suction, wind direction, and wind speed. Suction, wind direction, and wind speed fluctuate reciprocally as the spiral blade rotates, creating fluctuations in suction, wind direction, and wind speed within the hose. This effectively solves the problem of peppercorns sticking to and clogging the pipes under constant negative pressure. Simultaneously, the spirally distributed fruit-combing brush and the fruit-combing teeth at the bottom of the shell enable the harvesting of peppercorns. Specifically, the peppercorns are separated into rows after passing through the fruit-combing teeth. The bristles of the fruit-combing brush are located between the two teeth of the fruit-combing teeth. Under the push of the fruit-combing brush, the peppercorns enter the harvesting device, and then the spiral blade cuts them.

[0021] 2. The present invention also provides side blades on both sides of the air inlet of the outer shell. The spiral blade and the side blades work together to achieve cutting functions in three directions: left, right and bottom, reducing the need for adjusting the angle of the picking position and improving work efficiency.

[0022] 3. The air box is equipped with a pressurization chamber located below the air inlet. The pressurization chamber has an opening in the middle of its bottom to facilitate the falling of peppercorns into the hopper. The opening in the middle of the bottom of the pressurization chamber can reduce the impact of the hopper on the negative pressure suction. Because the hopper has a large space and a lot of air, it is easy to reduce the suction. The beneficial effects of pressurization are: a greater negative pressure suction can be achieved with the same fan motor speed, and the same negative pressure suction can reduce the fan motor speed, thus achieving energy saving. Attached Figure Description

[0023] Figure 1 This is a three-dimensional diagram of the present invention;

[0024] Figure 2 This is a three-dimensional view of the harvesting device of the present invention;

[0025] Figure 3 This is a three-dimensional view of the rotating cutting tool of the present invention;

[0026] Figure 4 The three-dimensional shape of the bellows of this invention Figure 1 ;

[0027] Figure 5 The three-dimensional shape of the bellows of this invention Figure 2 ;

[0028] Figure 6 This is a cross-sectional view of the bellows of the present invention;

[0029] Figure 7 This is a cross-sectional view of the fan of the present invention;

[0030] Figure 8 This is a schematic diagram showing the harvester of the present invention in operation when the air inlet is in the middle position;

[0031] Figure 9 This is a schematic diagram showing the harvester of the present invention in operation when the air inlet is in the position of both sides;

[0032] Figure 10 This is a schematic diagram showing the harvester of the present invention when the air inlet is in the left-side position during operation;

[0033] Figure 11 This is a schematic diagram showing the harvester of the present invention in operation when the air inlet is in the right-side position;

[0034] In the diagram: 1. Harvesting device, 2. Bellows, 3. Fan, 4. Hose, 5. Harvesting device housing, 6. Rotating blade, 7. Side blade, 8. Combing teeth, 9. Harvesting motor, 10. Air guide plate, 11. Spiral blade, 12. Combing brush, 13. Air outlet, 14. Filter screen, 15. Upper buckle, 16. Lower slot, 17. Battery compartment cover, 18. Harvesting motor speed controller, 19. Fan motor speed controller, 20. Control compartment cover, 21. Feed hopper cover, 22. Second air inlet, 23. Battery compartment, 24. Battery, 25. Feed hopper, 26. Control compartment, 27. Pressure chamber, 28. Fan top cover, 29. Fan base, 30. Fan blade, 31. Fan motor, 32. First air inlet. Detailed Implementation

[0035] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0036] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] like Figures 1 to 11 As shown in the accompanying drawings, the structure, working principle, and usage of the present invention will be described in detail below.

[0039] like Figure 1 As shown in the figure, this embodiment discloses a negative pressure pepper harvesting machine, including a harvesting device 1, a bellows 2, a blower 3, and a hose 4. The blower 3 is installed on the top of the bellows 2, and the bellows 2 and the harvesting device 1 are connected by the hose 4. The harvesting device 1 is used to harvest peppers, and the blower 3 operates on the top of the bellows 2, generating negative pressure inside the bellows 2. The harvested peppers are drawn into the bellows 2 through the hose 4 under the suction of the negative pressure, thus realizing the harvesting and collection operation of peppers.

[0040] like Figures 2 to 3As shown, the harvesting device 1 in this embodiment mainly harvests Sichuan peppercorns. It mainly includes a shell 5, a rotating blade 6, a side blade 7, fruit combing teeth 8, and a harvesting motor 9. The rear end of the shell 5 is connected to the hose 4, and the front end of the shell 5 is open, serving as an air inlet and a harvesting opening for the Sichuan peppercorns. The harvesting motor 9 is installed on the side of the shell 5, and the rotating blade 6 is installed at the open position of the shell 5. One end of the rotating blade 6 is connected to the harvesting motor 9, and the other end is connected to the shell 5 via a bearing. The side blade 7 is installed on both sides of the open position of the shell 5, and the fruit combing teeth 8 are installed at the bottom of the shell 9. The fruit combing teeth 8 and the rotating blade 6 cooperate with each other to harvest the Sichuan peppercorns.

[0041] Furthermore, the rotating blade 6 in this embodiment includes a rotating shaft, the rotation direction of which is perpendicular to the air intake direction. A guide plate 10 and a fruit combing brush 12 are arranged on the rotating shaft. The fruit combing brush 12 and the guide plate 10 are spirally distributed along the axial direction of the rotating shaft. Specifically, this embodiment provides two guide plates 10, both spirally distributed with the same rotation direction (both clockwise or counterclockwise) and the same pitch. Spiral blades 11 are arranged along their spiral direction at the outer edges of the two guide plates 10. When the spiral blades cut the peppercorns, the spiral blades 11 cooperate with the outer shell of the harvesting device, and the spiral blades 11 move with the air intake. The air guide plate rotates together, and the cutting point changes with the rotation of the spiral blade 11. This invention performs a single cut, avoiding repeated cutting and the potential damage to the peppercorns from secondary cutting. The spiral blade 11, air guide plate 10, and harvesting shell 5 form a shield, the position of which changes with the rotation of the air guide plate 10. The air inlet 22 reciprocates left and right with the rotation of the air guide plate 10, thus affecting the suction, air direction, and wind speed. The suction, air direction, and wind speed fluctuate reciprocally with the rotation of the air guide plate 10, creating fluctuations in suction, air direction, and wind speed within the flexible hose 4. This effectively solves the problem of peppercorns adhering to the pipe and causing blockage under constant negative pressure. For the specific location of the first air inlet 32, please refer to [reference needed]. Figures 8-11 ,in, Figure 8 This is a schematic diagram showing the first air inlet 32 ​​in the middle position during the operation of the harvester; Figure 9 This is a schematic diagram showing the first air inlet 32 ​​in the two-sided position during the operation of the harvester. Figure 10 This is a schematic diagram showing the first air inlet 32 ​​in the left-side position during the operation of the harvester. Figure 11 This is a schematic diagram of the first air inlet 32 ​​being in the right-side position during the operation of the harvester; that is, the first air inlet 32 ​​reciprocates between the middle position, both sides, and the left and right positions, thereby affecting the suction force, wind direction, and wind speed inside the hose 4, creating a certain fluctuation inside the hose 4, effectively solving the problem of pepper adhering to the pipe and causing blockage under constant negative pressure.

[0042] Furthermore, in this embodiment, the air guide plate 10 and the spiral blade 11 are integrally formed, or the air guide plate 10 and the spiral blade 11 are formed separately and then connected together by a connector. Preferably, they are detachable, which makes it convenient to replace the spiral blade 11 after it wears out.

[0043] Furthermore, in this embodiment, the fruit combing brush 12 is also spirally distributed along the axis of rotation on the rotating shaft. The fruit combing brush 12 is arranged in two rows; the spiral direction of the two rows is the same as the spiral direction of the two air guide plates 10, and the pitch is the same; and when the brush of each fruit combing brush 12 rotates to the position of the fruit combing tooth 8, it is exactly located between two adjacent teeth of the fruit combing tooth 8. The peppercorns are first separated by the fruit combing tooth 8, and under the push of the fruit combing brush 12, the peppercorns enter the harvesting device 1 for cutting; after cutting, they enter the hopper 25 by the suction of the fan.

[0044] Furthermore, in this invention, since the spatial distribution of peppercorns is diverse, if only the spiral blade 11 at the bottom of the copper drum air guide plate is used for cutting, the angle of the harvesting device needs to be constantly adjusted. Therefore, this application provides side blades 7. Side blades are provided on both sides of the opening of the outer shell, and side blades are also provided at both ends of the guide plate 10. The two sets of side blades form a scissor-like blade, enabling the entire device to achieve multi-angle cutting, reducing the need for angle adjustment during harvesting operations, and improving work efficiency.

[0045] like Figures 4 to 6 As shown, the wind box 2 in this embodiment includes an air outlet 13, a filter screen 14, an upper buckle 15, a lower slot 16, a battery compartment cover 17, a harvesting motor speed controller 18, a fan motor speed controller 19, a control compartment cover 20, a hopper cover 21, a second air inlet 22, a battery compartment 23, a battery 24, a hopper 25, a control compartment 26, and a pressurization compartment 27.

[0046] The top of the air box 2 is provided with an air outlet 13 and the side is provided with a second air inlet 22. The air outlet 13 is connected to the blower 3. The filter screen 14 is installed at the air outlet 13 of the air box to filter the peppercorns and prevent the peppercorns from being sucked into the blower 3 and causing damage to the blower 3. A pressure chamber 27 is provided below the filter screen 14. The pressure chamber 27 is located below the second air inlet 22. The second air inlet 22 serves as both an air inlet and a feed inlet. The harvested peppercorns enter the silo through this air inlet.

[0047] Furthermore, in this embodiment, the pressure chamber 27 has a central opening at the bottom. The opening is located in the same plane as the axis of the air inlet and air outlet, which facilitates the peppercorns falling into the hopper 25. The central opening at the bottom of the pressure chamber 27 can reduce the influence of the hopper on the negative pressure suction. Because the hopper 25 has a large space and a lot of air, it is easy to reduce the suction. The beneficial effects of pressure boosting are: a greater negative pressure suction can be achieved with the same fan motor speed, and the same negative pressure suction can reduce the fan motor speed, thus achieving energy saving.

[0048] Furthermore, the aforementioned upper buckle 15 and lower slot 16 are connected to the shoulder strap, making it convenient for the harvester to carry the bellows 2 on their back.

[0049] Furthermore, a battery compartment 23 is provided above the bellows 2, and a battery compartment cover 17 is installed above the battery compartment 23. The battery 24 is installed inside the battery compartment 23 to provide energy for the harvester. A control compartment 26 is provided below the bellows 2. The harvesting motor speed controller 18 and the fan motor speed controller 19 are installed inside the control compartment 26. The harvesting motor speed controller 18 controls the operating speed of the harvesting motor 9, and the fan motor speed controller 19 controls the operating speed of the fan motor 30. The control compartment cover 20 is installed below the control compartment 26.

[0050] Furthermore, the middle of the bellows 2 is a hopper 25, which is mainly used to collect and store the harvested peppercorns. The hopper cover 21 is installed below the hopper 25. When the hopper is full, the hopper cover 21 is opened to take out the harvested peppercorns.

[0051] Furthermore, the pressurization chamber 27 is conical, with the upper diameter being larger than the lower diameter, thereby providing a certain pressurization effect.

[0052] like Figure 7 As shown, the fan 3 in this embodiment includes a fan cover 28, a fan base 29, a fan blade 30, and a fan motor 31. The fan base 29 is connected to the air outlet 13 of the air box. The fan motor 31 is installed on the fan base 29, the fan blade 30 is installed on the fan motor 31, and the fan cover 28 is installed on the fan base 29. The fan motor 31 drives the fan blade 30 to rotate, drawing out the air in the air box 2 to form a negative pressure. The harvested peppercorns are then sucked into the hopper 25 through the hose 4, thereby realizing the harvesting and collection of peppercorns.

[0053] The specific working process of the above-mentioned negative pressure pepper harvesting machine is as follows:

[0054] The harvester first carries the entire device on his back. Then, the harvesting device 1 is aligned with the peppercorns to be harvested. The harvester starts the machine and rotates the blade 6. The peppercorns are first sorted by the comb teeth 8 and then enter the front of the harvesting device 1. The comb brush 12 pushes them in, and the spiral blade 11 cuts them. The cut peppercorns pass through the hose 4 and the pressurization chamber 27 and then enter the hopper 25. When the hopper 25 is full of peppercorns, the bottom hopper cover 21 can be opened to remove the peppercorns.

[0055] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A negative pressure pepper harvesting machine, comprising a harvesting device, wherein the harvesting device includes a housing, a rotating blade, a side blade, comb teeth, and a harvesting motor; the rear end of the housing is connected to a bellows, and the front end is open; the harvesting motor is mounted on the side of the housing of the harvesting device, the rotating blade is mounted at the open position of the housing of the harvesting device, one end of the rotating blade is connected to the harvesting motor, and the other end is connected to the housing of the harvesting device, characterized in that, The rotating cutter includes a rotating shaft, the rotation direction of which is perpendicular to the air inlet direction. A guide plate and a combing brush are mounted on the rotating shaft. Two guide plates are spirally distributed along the axis of the rotating shaft, with the same rotation direction and pitch. A spiral blade is mounted on the outer edge of each guide plate along its spiral direction. Two rows of combing brushes are arranged, with the rotation direction and pitch of the two rows of brushes being the same as those of the guide plates. Combing teeth are also provided at the bottom of the open end of the outer casing. Side blades are also provided on both sides of the opening of the outer shell, and side blades are also provided at both ends of the air guide plate; The air box includes an air outlet, an air inlet, a filter, a battery compartment, a material compartment, a control compartment, a pressurization compartment, a harvesting motor speed controller, and a fan motor speed controller; The top of the air box has an air outlet, and the side wall of the air box has an air inlet. The air outlet is connected to the blower. A filter screen is installed at the air outlet of the air box to filter peppercorns. A pressurization chamber is set below the filter screen and is located below the air inlet. Inside the air box, there are also battery compartments, control compartments, and material compartments. The harvesting motor speed controller and the blower motor speed controller are installed in the control compartment. The harvesting motor speed controller controls the operating speed of the harvesting motor, and the blower motor speed controller controls the operating speed of the blower motor. The pressurization chamber has an opening in the middle of its bottom, and the opening is located in the same plane as the axis of the air inlet and air outlet. The pressurization chamber is conical, with the upper diameter being larger than the lower diameter, thus providing a certain pressurization effect.

2. The negative pressure pepper harvesting machine as described in claim 1, characterized in that, The bottom of the hopper is equipped with a hopper cover.

3. The negative pressure pepper harvesting machine as described in claim 1, characterized in that, The battery compartment is located at the top of the wind box, the control compartment is located at the bottom of the wind box, and the remaining space is used as a material storage compartment.

4. The negative pressure pepper harvesting machine as described in claim 1, characterized in that, When each fruit comb brush is rotated to the fruit comb tooth position, the bristles are positioned exactly between two adjacent fruit comb teeth.

5. A negative pressure pepper harvesting machine as described in claim 1, characterized in that, The air guide plate and the spiral blade are integrally formed.

6. A negative pressure pepper harvesting machine as described in claim 1, characterized in that, The air guide plate and the spiral blade are detachably connected.

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