Negative pressure air suction type collecting device of pepper picking machine

Abstract

The present application relates to the technical field of pepper collecting equipment, in particular to a negative pressure air suction type collecting device of a pepper picking machine, which comprises a collecting bin, a pulse air flow generating mechanism, a shaking mechanism, a control system, an air flow tail end executing mechanism and a base. The collecting bin comprises a bin body, a bin cover, a fan, an air pressure sensor and a collecting pipe. The pulse air flow generating mechanism comprises an air source, an electromagnetic pulse control valve and an air pipe. The air source comprises an air storage tank. The control system of the present application can instruct the electromagnetic pulse control valve of the pulse air flow generating mechanism to open, so that the high-pressure gas in the air storage tank forms a pulse air flow, which is injected into the collecting pipe through the air pipe and the specially designed air flow tail end executing mechanism, produces a strong impact on the accumulated material, and drives the collecting pipe to produce high-frequency shaking through the connecting rod mechanism. The internal impact of the pulse air flow and the external shaking of the collecting pipe act synchronously, forming a "inside-outside combined" composite cleaning effect, which can effectively solve the problem of pepper blockage in the collecting pipe.

Description

Technical Field

[0001] This invention relates to the field of pepper collection equipment technology, specifically a negative pressure air suction collection device for pepper harvesting machines. Background Technology

[0002] Sichuan pepper, as an important condiment and economic crop, has its harvesting efficiency directly impacting production benefits. Manual harvesting is inefficient and costly, making mechanized harvesting a growing trend. Negative pressure pneumatic collection is a key component of mechanized harvesting, using airflow to transport the harvested Sichuan pepper fruits to a collection bin.

[0003] In existing technologies, negative pressure suction collection devices typically use a fan to generate negative pressure and suck up peppercorns through pipes. To prevent pipe blockage, common practices include increasing the pipe diameter, increasing the fan power, or installing mechanical agitators in the pipes. These methods can alleviate the blockage problem to some extent.

[0004] However, simply increasing the pipe diameter is limited by the overall machine layout, and increasing the fan power will increase energy consumption, making it unsuitable for mobile devices with high endurance requirements. The mechanical stirring parts are prone to direct contact with the pepper fruits, causing damage to the fruits and affecting quality. Therefore, there is an urgent need for a collection device that can solve the problem of pepper accumulation and blockage in the collection pipe, which can both unclog the collection pipe and save energy to improve endurance. Summary of the Invention

[0005] The purpose of this invention is to provide a negative pressure air suction collection device for a pepper harvester, so as to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A negative pressure air suction collection device for a pepper harvester includes a collection chamber, a pulse airflow generating mechanism, a shaking mechanism, a control system, an airflow end actuator, and a base;

[0008] The collection chamber includes a chamber body, a fan, a pressure sensor, and a collection pipe;

[0009] The pulse airflow generating mechanism includes an air source, an electromagnetic pulse control valve, and an air pipe. The air source includes an air storage tank, the air pipe is installed at the outlet of the air storage tank, and the electromagnetic pulse control valve is installed at the outlet of the air storage tank and connected to the air pipe.

[0010] The shaking mechanism includes a power element, a linkage mechanism, and a collection tube connector. The linkage mechanism connects the power element and the collection tube connector, and the collection tube connector is fixedly connected to the collection tube.

[0011] The control system is electrically connected to the air pressure sensor, electromagnetic pulse control valve, and power element. When the air pressure sensor detects a decrease in air pressure in the storage cavity, the control system synchronously controls the electromagnetic pulse control valve to open and the power element to start, so that the pulse airflow enters the collection tube through the airflow end actuator, and at the same time, the shaking mechanism drives the collection tube to shake.

[0012] Preferably, a partition plate is fixedly connected inside the silo body, which separates the silo body into an equipment cavity and a storage cavity. The pressure sensor and the fan are both installed on the top of the partition plate and located inside the equipment cavity, and the sensing end of the pressure sensor extends into the storage cavity.

[0013] Preferably, the collection chamber further includes a cover, which is located on the top of the chamber body. The collection pipe and the side wall of the storage cavity are fixedly connected. An exhaust port is provided on the outer surface of the chamber body, and the exhaust port is connected to the equipment cavity.

[0014] Preferably, the air inlet of the fan is fixedly equipped with a filter, a through hole is provided on the partition plate, the filter is fixedly installed on the partition plate and connected to the through hole, and the air outlet of the fan is located inside the equipment cavity.

[0015] Preferably, the airflow end actuator is installed at the front of the collection pipe and connected to the air pipe, and includes an actuator body and multiple evenly distributed airflow channels;

[0016] The airflow channel of the airflow terminal actuator is spirally arranged along the outside of the actuator body, first upward and then downward, and enters the collection pipe inside the actuator body; the airflow channel transforms the airflow delivered by the air pipe into a spiral-shaped airflow that blows through the inside of the collection pipe toward the collection chamber.

[0017] Preferably, the linkage mechanism includes a crank, a connecting rod, a rocker arm, and a fixed rod. The output end of the power element is fixedly connected to the crank, one end of the crank is rotatably connected to the connecting rod, the middle part of the rocker arm is rotatably connected to the fixed rod, one end of the rocker arm is rotatably connected to the connecting rod, and the other end is rotatably connected to the collecting pipe connector.

[0018] Preferably, the air source further includes an air compressor, which is connected to an air storage tank.

[0019] Preferably, the negative pressure air suction collection device of the pepper harvester further includes a pressure relief mechanism, which is set in the cavity of the equipment and includes a cover plate and an elastic element; one end of the cover plate is hinged to the top of the partition plate, the partition plate has a pressure relief port, and the cover plate is located above the pressure relief port; the elastic element is fixed to the top of the partition plate by a bracket, and its bottom is fixedly connected to the top of the cover plate away from the hinge.

[0020] Preferably, the base includes a base plate and a drive wheel, with the drive wheel mounted on the bottom of the base plate; a collection chamber, a pulse airflow generating mechanism, a shaking mechanism, and a control system are mounted on the base plate.

[0021] The beneficial effects of this invention are:

[0022] 1. The collection chamber of this invention is equipped with a pressure sensor, which can monitor the pressure changes in the storage cavity in real time. When the collection pipe becomes blocked due to the accumulation of peppercorns, the negative pressure condition of the system changes, and the pressure in the chamber will drop significantly. The pressure sensor can sensitively detect this change and transmit the signal to the control system, providing a precise and timely triggering basis for automatic unblocking.

[0023] Second, the control system of this invention can instruct the electromagnetic pulse control valve of the pulse airflow generating mechanism to open, so that the high-pressure gas in the gas tank forms a pulse airflow, which is injected into the collection pipe through the air pipe and the specially designed airflow end actuator, generating a strong impact on the accumulated material. At the same time, the control system drives the power element of the shaking mechanism, which drives the collection pipe to generate high-frequency shaking through the linkage mechanism. The internal impact of the pulse airflow and the external shaking of the collection pipe work synchronously to form a "combined internal and external" cleaning effect, which can effectively solve the problem of pepper blockage in the collection pipe. The unblocking efficiency and reliability are far higher than those of a single unblocking method.

[0024] Third, this invention establishes a stable negative pressure within the storage cavity of the collection chamber using a blower, forming a continuous main intake airflow from the harvesting head through the collection pipe towards the chamber. Simultaneously, when unblocking is required, a pulsed auxiliary airflow generated by the airflow end-acting mechanism employs a unique spiral path arrangement, first upward and then downward, and obliquely cuts into the actuator body and the inside of the collection pipe. This design achieves crucial airflow redirection and morphological transformation: it efficiently transforms the auxiliary airflow, which might otherwise flow away from the collection chamber, into a spiral jet blowing towards the collection chamber along the inside of the collection pipe. This spiral-shaped airflow has multiple beneficial effects: firstly, it can superimpose with the main intake airflow generated by the blower in the same direction, enhancing local drainage capacity; secondly, the spiral-forward airflow creates strong radial shear and circumferential disturbance inside the pipe, effectively enveloping, loosening, and adsorbing the pepper material on the pipe wall or accumulated within the pipe, generating a disturbance and peeling effect on the accumulated material far exceeding that of a direct-flow airflow, thereby greatly improving instantaneous unblocking efficiency and helping to maintain long-term unobstructed flow in the pipeline during normal harvesting.

[0025] IV. The unblocking method of this invention is a non-contact or flexible contact operation. The pulsed airflow serves as the primary cleaning force, avoiding direct, hard contact between mechanical parts (such as augers or brushes) and the peppercorns; the shaking of the collection tube is also a flexible motion. This method minimizes physical damage to the delicate peppercorns, such as squeezing and scratching, significantly improving the integrity rate and commercial quality of the harvested fruit.

[0026] Fifth, without changing the original collection pipe diameter and fan system design, this invention helps reduce the overall power requirement compared to the traditional approach of simply increasing the pipe diameter or increasing the fan power to prevent blockage. It is particularly suitable for electric or hybrid electric equipment, and can effectively extend the endurance of field operations, achieving energy-saving and efficient operation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the collection chamber and pulse airflow generation mechanism of the present invention;

[0030] Figure 3 This is a partial structural diagram of the collection device of the present invention;

[0031] Figure 4 For the present invention Figure 3 A sectional view of the central compartment.

[0032] Figure 5 This is a schematic diagram of the airflow end actuator of the present invention;

[0033] Figure 6 This is a schematic diagram of the shaking mechanism of the present invention;

[0034] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0035] The attached figures are labeled as follows:

[0036] 1. Collection chamber; 11. Chamber body; 12. Chamber cover; 13. Collection pipe; 14. Fan; 15. Pressure sensor; 16. Divider plate; 17. Equipment cavity; 18. Storage cavity; 19. Exhaust vent; 110. Filter; 111. Through hole; 2. Pulse airflow generating mechanism; 21. Air source; 211. Air tank; 212. Air compressor; 22. Electromagnetic pulse control valve; 23. Air pipe; 3. Vibration mechanism; 31. Power element; 32. Linkage mechanism; 321. Crank; 322. Connecting rod; 323. Fixed rod; 324. Rocker arm; 33. Collection pipe connector; 4. Control system; 5. Base; 51. Base plate; 52. Drive wheel; 6. Airflow end actuator; 61. Actuator body; 62. Airflow channel; 7. Pressure relief mechanism; 71. Cover plate; 72. Elastic element; 73. Hinge. Detailed Implementation

[0037] 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.

[0038] like Figure 1-7 As shown, a negative pressure air suction collection device for a pepper harvester includes a collection chamber 1, a pulse airflow generating mechanism 2, a shaking mechanism 3, a control system 4, and an airflow end actuator 6.

[0039] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the collection chamber 1 includes a chamber body 11, a chamber cover 12, a fan 14, a pressure sensor 15, and a collection pipe 13. The chamber cover 12 is located above the chamber body 11 and can be detachably connected to the top of the chamber body 11 by means of a snap fastener, or can be rotated and opened and closed above the chamber body 11 by means of a hinge. When closed, it is fixed by means of a snap fastener. The removal by means of a snap fastener or the rotation by a hinge are existing technologies and will not be described in detail here.

[0040] A partition plate 16 is fixedly connected inside the silo 11, which separates the silo 11 into an equipment cavity 17 and a storage cavity 18. The collection pipe 13 is fixedly connected to the side wall of the storage cavity 18. The pressure sensor 15 and the fan 14 are both installed on the top of the partition plate 16 and located inside the equipment cavity 17. The pressure sensor 15 is electrically connected to the control system 4. The sensing end of the pressure sensor 15 extends into the storage cavity 18 to detect the pressure inside the storage cavity 18. An exhaust port 19 is opened on the outer surface of the silo 11 and is connected to the equipment cavity 17.

[0041] A filter 110 is fixedly installed at the air inlet of the fan 14. A through hole 111 is provided on the partition plate 16. The filter 110 is fixedly installed on the partition plate 16 and connected to the through hole 111. When the fan 14 is started, its air inlet can draw in air from the storage cavity 18 through the through hole 111. During the intake process, the presence of the filter 110 can prevent impurities and dust in the storage cavity 18 from being drawn into the fan 14 and transferred to the equipment cavity 17. The air outlet of the fan 14 is located in the equipment cavity 17, which can deliver the drawn-in air to the equipment cavity 17 and then flow out from the exhaust port 19.

[0042] like Figure 1 and Figure 2 As shown, the pulse airflow generating mechanism 2 includes an air source 21, an electromagnetic pulse control valve 22, and an air pipe 23. The air source 21 includes an air storage tank 211. The air pipe 23 is installed at the outlet of the air storage tank 211. The electromagnetic pulse control valve 22 is installed at the outlet of the air storage tank 211 and connected to the air pipe 23 to control the air output of the air pipe 23.

[0043] The gas source 21 also includes an air compressor 212, which is connected to the air tank 211. As the gas in the air tank 211 is used, the pressure drops and the air compressor 212 automatically works to replenish the gas in the air tank 211. After replenishment is completed, the air compressor 212 stops working.

[0044] like Figure 1 , Figure 6 and Figure 7 As shown, the shaking mechanism 3 includes a power element 31, a linkage mechanism 32, and a collection tube connector 33. The linkage mechanism 32 connects the power element 31 and the collection tube connector 33, and the collection tube connector 33 is connected to the collection tube 13.

[0045] like Figure 5 As shown, the linkage mechanism 32 includes a crank 321, a connecting rod 322, a rocker arm 324, and a fixed rod 323. The crank 321 connects the power element 31 and the connecting rod 322.

[0046] Among them, the power element 31 is a motor, the output end of which is fixedly connected to the crank 321. One end of the crank 321 is rotatably connected to the connecting rod 322. The middle part of the rocker arm 324 is rotatably connected to the fixed rod 323. One end of the rocker arm 324 is rotatably connected to the connecting rod 322, and the other end is rotatably connected to the collecting pipe connector 33. The collecting pipe connector 33 is fixed to the outer surface of the collecting pipe 13.

[0047] The crank 321 reciprocates in a circular motion under the drive of the power element 31. The reciprocating circular motion of the crank 321 drives the connecting rod 322 to swing. The connecting rod 322 drives one end of the rocker arm 324 to swing back and forth around the fixed rod 323. At the same time, the other end of the rocker arm 324 drives the collecting tube 13 to swing through the collecting tube connector 33, ultimately achieving the shaking of the collecting tube 13.

[0048] like Figure 1 , Figure 2 and Figure 6 As shown, the control system 4 includes a programmable controller and a driver. When peppercorns accumulate and cause blockage in the collection pipe 13, the pressure sensor 15 detects a decrease in the pressure inside the chamber. The programmable controller receives a signal from the pressure sensor 15 and sends a signal to the electromagnetic pulse control valve 22 to open it. The high-pressure airflow in the gas storage tank 211 passes through the electromagnetic pulse control valve 22, the air pipe 23, and the airflow end actuator 6 into the collection pipe 13 to clear the accumulated material. At the same time, the programmable controller sends a signal to the driver, which controls the power element 31 to drive the linkage mechanism 32 to move.

[0049] like Figure 1 and Figure 5 As shown, the airflow end actuator 6 is installed at the front of the collection pipe 13 and connected to the air pipe 23. It includes an actuator body 61 and multiple evenly distributed airflow channels 62. Both the actuator body 61 and the airflow channels 62 are rigid pipes, while the collection pipe 13 is a flexible pipe and the air pipe 23 is also a flexible pipe. One end of the actuator body 61 is fixedly connected to the collection pipe 13, and the other end is connected to the pipe for collecting peppercorns on the external harvesting head. The external harvesting head is one of the components of the peppercorn harvesting machine in the prior art, and will not be described in detail here.

[0050] like Figure 4 As shown, the airflow channel 62 of the airflow end actuator 6 is spirally arranged along the outside of the actuator body 61, first upward and then downward, and enters the collection pipe 13 inside the actuator body 61. The airflow channel 62 changes the airflow away from the collection chamber 1 to blow towards the collection chamber 1 through the inside of the collection pipe 13. The airflow moves in a spiral shape inside the collection pipe 13, which has a strong disturbance effect on the accumulated material and makes it easier to clean.

[0051] like Figure 2 , Figure 3 and Figure 4As shown, the negative pressure air suction collection device of the pepper harvester also includes a pressure relief mechanism 7. The pressure relief mechanism 7 is set in the cavity 17 of the equipment. It includes a cover plate 71 and an elastic element 72 for fixing. One end of the cover plate 71 is hinged to the top of the partition plate 16 through a hinge 73. The partition plate 16 has a pressure relief port. The cover plate 71 is located above the pressure relief port and closes the pressure relief port. The elastic element 72 is fixed to the top of the partition plate 16 through a bracket. Its bottom is fixedly connected to the top of the end of the cover plate 71 away from the hinge 73 and applies downward pressure to the cover plate 71 to press the cover plate 71 onto the pressure relief port to achieve a seal.

[0052] When the gas pressure inside the storage cavity 18 increases to a certain level, the gas pressure will push up the cover plate 71, which is pressed by the elastic element 72 in the pressure relief mechanism, to achieve rapid pressure relief. The elastic element 72 is a spring, which can be curled to a certain extent when the cover plate 71 is pushed up.

[0053] like Figure 1 As shown, a negative pressure air suction collection device for a pepper harvester includes a base 5, which includes a base plate 51 and a drive wheel 52. The drive wheel 52 is installed on the bottom of the base plate 51. The collection chamber 1, the pulse airflow generating mechanism 2, the shaking mechanism 3, and the control system 4 are all located on the base plate 51 to realize the transfer of the collection device.

[0054] The chamber 11, air tank 211, air compressor 212, and fixing rod 323 are all installed on the top of the base plate 51.

[0055] The working principle of the negative pressure air suction collection device for a pepper harvester provided by this invention is as follows:

[0056] When the harvester is working, the air pressure sensor 15 in the collection chamber 1 stores the air pressure in the cavity 18 in real time. When peppers accumulate in the collection pipe 13, the air pressure in the storage cavity 18 will decrease. At this time, the air pressure sensor 15 will transmit a signal to the control system 4.

[0057] The control system 4 sends a command to the power element 31 of the shaking mechanism 3, and the power element 31 drives the linkage mechanism 32 to shake the collection pipe 13 to clean up the accumulated material.

[0058] The control system 4 sends a command to the electromagnetic pulse control valve 22 in the pulse airflow generator 2 to open. The pulse airflow passes through the air pipe 23 and enters the collection pipe 13 in a spiral motion through the airflow end actuator 6, blowing towards the collection chamber 1 to clean the accumulated material in the collection pipe 13. The pulse airflow and the shaking of the collection pipe 13 work synchronously to achieve the cleaning of the accumulated material in the collection pipe 13.

[0059] Compared with related technologies, the negative pressure air suction collection device for pepper harvesting machines provided by this invention has the following beneficial effects:

[0060] The control system 4 of this invention can instruct the electromagnetic pulse control valve 22 of the pulse airflow generating mechanism 2 to open, so that the high-pressure gas in the gas storage tank 211 forms a pulse airflow, which is injected into the collection pipe 13 through the air pipe 23 and the specially designed airflow end actuator 6, generating a strong impact on the accumulated material. At the same time, the control system 4 drives the power element 31 of the shaking mechanism 3, which drives the collection pipe 13 to generate high-frequency shaking through the linkage mechanism 32. The internal impact of the pulse airflow and the external shaking of the collection pipe 13 work synchronously to form a "combined internal and external" cleaning effect, which can solve the problem of pepper blockage in the collection pipe 13. The unblocking efficiency and reliability are far higher than those of a single unblocking method.

[0061] This invention establishes a stable negative pressure within the storage cavity 18 of the collection chamber 1 using a blower 14, forming a continuous main intake airflow that flows from the harvesting head through the collection pipe 13 into the chamber. Simultaneously, when dredging is required, a pulsed auxiliary airflow generated by the airflow end-acting mechanism 6, with its channel 62 arranged in a unique spiral path—first upward and then downward—cuts obliquely into the actuator body 61 and the collection pipe 13. This design achieves crucial airflow redirection and shape transformation: it efficiently transforms the auxiliary airflow, which might otherwise flow away from the collection chamber 1, into a spiral jet blowing towards the collection chamber 1 along the inside of the collection pipe 13. The spiral-shaped airflow has multiple beneficial effects: First, it can superimpose with the main intake airflow generated by the blower 14 in the same direction, enhancing the local drainage capacity; second, the spiral-forward airflow will form strong radial shear and circumferential disturbance inside the pipe, which can effectively wrap, loosen and adsorb the pepper material on the pipe wall or accumulated in the pipe, producing a disturbance and peeling effect on the accumulated material that far exceeds that of the direct current airflow, thereby greatly improving the instantaneous dredging efficiency and helping to maintain the long-term smooth flow of the pipeline during normal harvesting.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A negative pressure air suction collection device for a pepper harvester, characterized in that, Includes a collection chamber, a pulse airflow generator, a shaking mechanism, a control system, an airflow end effector, and a base; The collection chamber includes a chamber body, a fan, a pressure sensor, and a collection pipe; The pulse airflow generating mechanism includes an air source, an electromagnetic pulse control valve, and an air pipe. The air source includes an air storage tank, the air pipe is installed at the outlet of the air storage tank, and the electromagnetic pulse control valve is installed at the outlet of the air storage tank and connected to the air pipe. The shaking mechanism includes a power element, a linkage mechanism, and a collection tube connector. The linkage mechanism connects the power element and the collection tube connector, and the collection tube connector is fixedly connected to the collection tube. The control system is electrically connected to the pressure sensor, electromagnetic pulse control valve, and power element. When the pressure sensor detects a decrease in the pressure inside the storage cavity, the control system synchronously controls the electromagnetic pulse control valve to open and the power element to start, so that the pulse airflow enters the collection tube through the airflow end actuator, and at the same time, the shaking mechanism drives the collection tube to shake. A partition plate is fixedly connected inside the compartment, which separates the compartment into an equipment cavity and a storage cavity. The pressure sensor and the fan are both installed on the top of the partition plate and located inside the equipment cavity. The sensing end of the pressure sensor extends into the storage cavity. The air inlet of the fan is fixedly equipped with a filter, and a through hole is opened on the partition plate. The filter is fixedly installed on the partition plate and connected to the through hole. The air outlet of the fan is located inside the equipment cavity. The airflow end actuator is installed at the front of the collection pipe and connected to the air pipe, and includes the actuator body and multiple evenly distributed airflow channels; The airflow channel of the airflow terminal actuator is spirally arranged along the outside of the actuator body, first upward and then downward, and enters the collection pipe inside the actuator body; the airflow channel transforms the airflow delivered by the air pipe into a spiral-shaped airflow that blows through the inside of the collection pipe toward the collection chamber.

2. The negative pressure air suction collection device for a pepper harvester according to claim 1, characterized in that, The collection chamber also includes a cover, which is located on the top of the chamber body. The collection pipe and the side wall of the storage cavity are fixedly connected. An exhaust port is opened on the outer surface of the chamber body, and the exhaust port is connected to the equipment cavity.

3. The negative pressure air suction collection device for a pepper harvester according to claim 2, characterized in that, The linkage mechanism includes a crank, a connecting rod, a rocker arm, and a fixed rod. The output end of the power element is fixedly connected to the crank, one end of the crank is rotatably connected to the connecting rod, the middle part of the rocker arm is rotatably connected to the fixed rod, one end of the rocker arm is rotatably connected to the connecting rod, and the other end is rotatably connected to the collecting pipe connector.

4. The negative pressure air suction collection device for a pepper harvester according to claim 1, characterized in that, The gas source also includes an air compressor, which is connected to an air storage tank.

5. The negative pressure air suction collection device for a pepper harvester according to claim 1, characterized in that, The negative pressure air suction collection device for the pepper harvester also includes a pressure relief mechanism, which is located inside the equipment cavity. The pressure relief mechanism includes a cover plate and an elastic element. One end of the cover plate is hinged to the top of the partition plate. The partition plate has a pressure relief port, and the cover plate is located above the pressure relief port. The elastic element is fixed to the top of the partition plate by a bracket, and its bottom is fixedly connected to the top of the cover plate at the end away from the hinge.

6. The negative pressure air suction collection device for a pepper harvester according to claim 1, characterized in that, The base includes a base plate and a drive wheel. The drive wheel is installed at the bottom of the base plate. A collection chamber, a pulse airflow generating mechanism, a shaking mechanism, and a control system are installed on the base plate.

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