Negative-pressure flower suction system and use method

Abstract

The invention relates to a negative pressure cotton suction system and a use method, the negative pressure cotton suction system comprises a negative pressure mechanism, the negative pressure mechanism comprises a negative pressure cylinder, the top of the negative pressure cylinder is connected with a negative pressure device, the negative pressure device provides negative pressure for the negative pressure cylinder, and the side wall of the negative pressure cylinder is provided with a negative pressure connecting pipe used for outputting negative pressure to the outside; the flower picking mechanism is arranged on a flower suction pipe, the flower suction pipe is connected to the negative pressure connecting pipe through an adapter pipe, the flower picking mechanism comprises a plurality of flower picking claws which are arranged in an annular array relative to the axis of the flower suction pipe, cutting protrusions used for cutting off flower branches are arranged at the front ends of the flower picking claws, and synchronous swing arms are fixedly connected to the tail ends of the flower picking claws; the synchronous swing arm is driven by a pushing mechanism; the bottom of the negative pressure cylinder is connected with a main discharge valve mechanism for opening or closing the negative pressure cylinder; when the flower picking device is used, flower branches are cut off through the flower picking mechanism, and flowers are sucked into the negative pressure cylinder through the negative pressure equipment.

Description

Technical Field

[0001] The invention relates to a negative pressure flower suction system and a use method, belonging to the field of agricultural machinery. Background Art

[0002] Manual picking takes too long, is time-consuming, labor-intensive, and inefficient. In addition, the height of the flower branches is uncertain, and people have to bend back and forth and stand up, so manual picking is already very difficult and labor-intensive. This picking method requires a lot of labor and labor time, and the picking cost is high. In today's social and economic environment, there is a shortage of labor, and manual picking obviously no longer meets the development requirements of marigold planting. The flower picking grippers on the market are all manual auxiliary tools, devices to prevent hand injuries, and cannot achieve automatic picking mode. Marigold has a short flowering period and must be picked in large quantities in a short period of time. After flowering, it is very easy to wither. Large-scale planting requires a huge amount of manpower in a short period of time. In addition, the flowering period is divided into batches, and one plant will have several flowering periods, which requires a large amount of labor. In addition, the planting areas across the country are in remote plains and local labor areas are seriously insufficient. Due to the short flowering period, the current manual labor will be high-intensity, or even at night. This manual picking mode is already on the verge of being eliminated from the market, and the entire national market cannot effectively solve it. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the technical problems in the prior art and provide a negative pressure flower suction system.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A negative pressure flower suction system, comprising:

[0006] The negative pressure mechanism includes a negative pressure cylinder, a negative pressure device is connected to the top of the negative pressure cylinder to provide negative pressure for the negative pressure cylinder, and a negative pressure connecting pipe for outputting negative pressure to the outside is arranged on the side wall of the negative pressure cylinder;

[0007] The flower picking mechanism is arranged on the flower suction tube, and the flower suction tube is connected to the negative pressure connecting tube through a transfer tube. The flower picking mechanism includes a plurality of flower picking claws arranged in a circular array relative to the axis of the flower suction tube. The flower picking claws are spoon-shaped structures. The front end of the flower picking claws is provided with a cutting protrusion for cutting off the flower branches. The end of the flower picking claws is fixedly connected to a synchronous swing arm. The end of the synchronous swing arm is rotatably connected to the end face of the front end of the flower suction tube. The end of the synchronous swing arm is movably connected to the outer side wall of the front end position of the flower suction tube through a pushing mechanism. The pushing mechanism pushes the synchronous swing arm to make the flower picking claws swing back and forth.

[0008] Wherein, a main discharge valve mechanism for opening or closing the negative pressure cylinder is connected to the bottom of the negative pressure cylinder.

[0009] As a further improvement of the present invention, the pushing mechanism includes a synchronous ring, a plurality of pushing swing arms are arranged in an annular array on the synchronous ring, one end of the pushing swing arm is rotatably connected to the synchronous ring, and the other end of the pushing swing arm is rotatably connected to the end of the synchronous swing arm; the synchronous ring is movably connected to the outer side wall of the flower suction tube through a linear drive;

[0010] The synchronization ring structure can ensure the synchronization of the actuation of each flower picking claw. When closing, it can ensure tight closure to prevent the flowers from escaping from the unclosed flower picking claws. It can also ensure full opening to prevent the unopened flower picking claws from squeezing the flowers and causing damage to the flowers.

[0011] As a further improvement of the present invention, the linear drive includes a first swing motor arranged in an annular array on the outer wall of the flower-absorbing tube, a swing arm is fixed on the swing output shaft of the first swing motor, and a slide rod is fixed on the end of the swing arm; a plurality of sliding frames are arranged in an annular array on the synchronization ring, a plurality of sliding grooves are arranged in the sliding frame, the slide rod is slidably connected in the sliding groove, and the angle between the axis of the sliding groove and the flower-absorbing tube is greater than 30° and less than 180°; a plurality of limit grooves are also arranged in an annular array on the synchronization ring, and a plurality of limit blocks embedded in the limit grooves are arranged on the outer wall of the flower-absorbing tube;

[0012] The movement of the sliding frame is achieved through the cooperation of the sliding groove and the sliding rod. Compared with the linear telescopic motor or the cylinder, the swing motor is smaller in size, which can effectively reduce the complexity and weight of the end structure of the flower suction tube; at the same time, the limit groove and the limit block can prevent the synchronous ring from rotating relative to the flower suction tube, ensuring the transmission of the upward pushing torque of the synchronous ring.

[0013] As a further improvement of the present invention, sawtooth-shaped auxiliary protrusions are symmetrically arranged at positions on both sides of the cutting protrusion corresponding to the spoon-shaped edge of the flower picking claw;

[0014] The auxiliary protrusion can assist the cutting protrusion to cut off the flower branch when the flower is offset from the axis of the flower suction tube, thereby ensuring the cutting efficiency.

[0015] As a further improvement of the present invention, the transfer tube comprises a longitudinal sliding tube slidably connected to the flower-absorbing tube, a sealing ring is arranged on the inner wall of the end of the longitudinal sliding tube, a plurality of positioning grooves are arranged in an annular array in the sealing ring, and a plurality of positioning blocks slidably connected to the positioning grooves are arranged in an annular array on the surface of the flower-absorbing tube, and the positioning blocks are strip-shaped structures and are arranged parallel to the axis of the flower-absorbing tube;

[0016] The sliding connection can dynamically adjust the flower-absorbing tube according to the height of the flowers; the positioning groove and the positioning block structure can prevent the flower-absorbing tube from rotating relative to the longitudinal sliding tube, thereby ensuring the stability of the flower-absorbing tube and reducing the possibility of the flower branches being twisted off.

[0017] As a further improvement of the present invention, a plurality of flower storage cylinders coaxial with the negative pressure cylinder are arranged in an array below the negative pressure cylinder, the flower storage cylinders are relatively fixed to the negative pressure cylinder through a frame, a secondary discharge valve mechanism for opening or closing the flower storage cylinders is arranged at the bottom of the flower storage cylinders, and the flower storage cylinders at the top of the array are connected to the bottom of the negative pressure cylinder through a main discharge valve mechanism;

[0018] The flower storage tube can store the flowers in different levels and compartments, preventing the open storage from squeezing the flowers at the bottom, and also reducing the oxidation effect on the flowers.

[0019] As a further improvement of the present invention, the main discharge valve mechanism and the auxiliary discharge valve mechanism both include a sliding frame fixed on the frame, the sliding frame includes two sets of sliding guide rails symmetrically arranged relative to the center of the negative pressure cylinder and the flower storage cylinder, the main discharge valve mechanism and the auxiliary discharge valve mechanism both include a gate plate slidably connected between the sliding guide rails, the upper surface of the gate plate is in sliding and sealing contact with the bottom of the negative pressure cylinder and the flower storage cylinder, and a push plate is provided at the end of the gate plate, and the push plate is movably connected to the end of the sliding guide rail through a reciprocating push mechanism;

[0020] The reciprocating gate plate has a simple structure and occupies less longitudinal space than the unfolded structure, so that the arrangement between the negative pressure cylinder and the flower storage cylinder can be more compact, the falling distance of the flowers is shorter, and the damage of the flowers is reduced.

[0021] As a further improvement of the present invention, the reciprocating pushing mechanism includes a reciprocating push rod, at least two groups of sliding seats are coaxially fixed on the sliding guide rail, and the reciprocating push rod and the sliding seat are rotatably connected; the reciprocating pushing mechanism also includes a second swinging motor fixed to the end of the sliding guide rail, and a pushing arm is fixed on the swinging output shaft of the second swinging motor, and the end of the pushing arm is movably connected to the end of the reciprocating push rod through an intermediate connecting rod, and the two ends of the intermediate end are respectively movably connected to the pushing arm and the reciprocating push rod through a universal ball head structure.

[0022] As a further improvement of the present invention, an exhaust pipe is connected to the top of the negative pressure cylinder through a tapered cylinder, a connecting seat is provided on the outer wall of the exhaust pipe, and the negative pressure equipment includes an exhaust fan, the exhaust fan is fixed to the connecting seat, and the suction end of the exhaust fan is connected to the exhaust pipe.

[0023] A method for using a negative pressure flower suction system, characterized in that it comprises the following steps:

[0024] The first step is to close the main discharge valve mechanism and the auxiliary discharge valve mechanism, generate negative pressure in the negative pressure cylinder through the negative pressure device, and unfold the flower picking claws through the pushing mechanism;

[0025] The second step is to move the flower suction tube of the flower picking mechanism to the top of the flower, and move the flower picking tube so that the slide is located inside the front end of the flower picking tube, and retract the flower picking claws by pushing the mechanism so that the cutting protrusion cuts off the flower branch;

[0026] The third step is to use the negative pressure equipment to suck the flowers into the negative pressure cylinder through the flower suction tube and the negative pressure connecting tube; after the suction, the flower picking claws are unfolded again through the pushing mechanism;

[0027] The fourth step, wherein there are N flower storage cylinders, when the negative pressure cylinder is full, firstly, the Nth flower storage cylinder is used to store flowers, and except for the auxiliary discharge valve mechanism at the bottom of the Nth flower storage cylinder, other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder fall into the Nth flower storage cylinder; then, the N-1th flower storage cylinder is used to store flowers, and except for the auxiliary discharge valve mechanisms at the bottom of the Nth and N-1th flower storage cylinders, other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder fall into the N-1th flower storage cylinder;

[0028] The fifth step is to pack the flowers. The packaging bag is placed at the bottom of the Nth flower storage tube, and each auxiliary discharge valve mechanism is opened step by step, so that the flowers in the flower storage tube fall into the packaging bag.

[0029] The beneficial effects of the present invention are:

[0030] The system includes a gripper that can pick flowers with the help of a visual algorithm, which can replace manual picking. The flowers can be collected together in a fixed mode through the system to facilitate flower management. There is no manual intervention throughout the process. Due to the short flowering period and the ability to operate at night, the machine can pick a large area in a short time, greatly improving the picking efficiency and economic benefits, and enabling large-scale planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is a structural schematic diagram of the negative pressure cylinder and the flower storage cylinder;

[0033] Figure 2 It is a structural diagram of the flower suction tube;

[0034] Figure 3 It is a schematic diagram of the combined state of the sealing ring and the longitudinal sliding tube;

[0035] Figure 4 It is a schematic diagram of the combined state of the arc tube and the radial sliding tube;

[0036] Figure 5 is a schematic diagram of an exhaust fan;

[0037] Figure 6 It is the overall structural diagram of the present invention.

[0038] In the figure: 1. flower suction tube; 2. flower picking claw; 3. cutting protrusion; 4. auxiliary protrusion; 5. synchronous swing arm; 6. swing seat; 7. synchronous ring; 8. push swing arm; 9. limit block; 10. limit groove; 11. first swing motor; 12. swing arm; 13. slide rod; 14. slide groove; 15. longitudinal sliding tube; 16. positioning block; 17. sealing ring; 18. arc tube; 19. radial sliding tube; 20. negative pressure cylinder; 21. connecting ear; 22. tapered cylinder; 23. connecting seat; 24. exhaust pipe; 25. exhaust fan; 26. suction end; 27. flower storage tube; 28. sliding guide rail; 29. ​​gate plate; 30. push plate; 31. sliding seat; 32. reciprocating push rod; 33. second swing motor; 34. push arm; 35. intermediate connecting rod; 36. universal ball head structure. DETAILED DESCRIPTION

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0040] like Figure 6 , a negative pressure flower suction system, mainly composed of a negative pressure mechanism, a flower picking mechanism and a storage mechanism;

[0041] like Figure 1 The negative pressure mechanism is connected to the top of the storage mechanism to provide negative pressure for the flower picking mechanism. The negative pressure mechanism includes a negative pressure cylinder 20. The outer wall of the negative pressure cylinder 20 is provided with a connecting ear 21. The negative pressure cylinder 20 is fixed to the frame through the connecting ear 21. The top of the negative pressure cylinder 20 is connected to an exhaust pipe 24 through a tapered cylinder 22. A connecting seat 23 is fixed to the outer wall of the exhaust pipe 24 corresponding to the position of the top of the tapered cylinder 22. The negative pressure device includes an exhaust fan 25, such as Figure 5 The bottom of the exhaust fan 25 is fixed on the connecting seat 23 , the air suction end 26 of the exhaust fan 25 is connected to the exhaust pipe 24 , and the negative pressure is generated in the negative pressure cylinder 20 through the exhaust fan 25 .

[0042] like Figure 1 The storage mechanism includes two sets of flower storage cylinders 27 coaxially arranged below the negative pressure cylinder 20. The flower storage cylinders 27 are also fixed on the frame, and the top and bottom of the flower storage cylinders 27 are both open structures.

[0043] like Figure 1, wherein a main discharge valve mechanism for opening and closing the bottom opening of the negative pressure cylinder 20 is arranged at the bottom of the negative pressure cylinder 20, and an auxiliary discharge valve mechanism for opening and closing the bottom opening of the flower storage cylinder 27 is arranged at the bottom of the flower storage cylinder 27; the main discharge valve mechanism and the auxiliary discharge valve mechanism have the same structure, and both include a sliding frame fixed on the frame, and the sliding frame includes two groups of sliding guide rails 28 symmetrically arranged relative to the center of the negative pressure cylinder 20 and the flower storage cylinder 27. The main discharge valve mechanism and the auxiliary discharge valve mechanism also include a gate plate 29 slidably connected between the sliding guide rails 28, and the upper surface of the gate plate 29 is in sliding and sealing contact with the bottom of the negative pressure cylinder 20 and the flower storage cylinder 27, and the end of the gate plate 29 is provided with A push plate 30, the push plate 30 and the end of the sliding guide rail 28 are movably connected through a reciprocating push mechanism; the reciprocating push mechanism includes a reciprocating push rod 32, on which at least two sets of sliding seats 31 are coaxially fixed, and the reciprocating push rod 32 is rotatably connected to the sliding seat 31; the reciprocating push mechanism also includes a second swing motor 33 fixed to the end of the sliding guide rail 28, and a push arm 34 is fixed on the swing output shaft of the second swing motor 33, and the end of the push arm 34 is movably connected to the end of the reciprocating push rod 32 through an intermediate connecting rod 35, and the two ends of the intermediate ends are movably connected to the push arm 34 and the reciprocating push rod 32 respectively through a universal ball head structure 36.

[0044] The second swing motor 33 drives the push arm 34 to rotate, and then the reciprocating push rod 32 is pulled by the intermediate connecting rod to realize the reciprocating movement of the gate plate 29, thereby realizing the opening and closing of the negative pressure cylinder 20 and the flower storage cylinder 27.

[0045] like Figure 6 The flower picking mechanism includes a flower sucking part and a flower picking part, wherein the flower sucking part includes a flower sucking tube 1, and a conversion frame is connected to the flower sucking tube 1. The conversion frame can be fixed on the operating wall to adjust the position of the end of the flower sucking tube 1 relative to the flower; a negative pressure connecting tube is fixed on the top side wall of the negative pressure cylinder 20, and the flower sucking part also includes a radial sliding tube 19 slidably sleeved on the negative pressure connecting tube, and the radial sliding tube 19 can move along the radial axis of the negative pressure cylinder 20, such as Figure 4 A spring tube structure arc tube 18 is connected to the radial sliding tube 19, and a longitudinal sliding tube 15 is fixedly connected to the end of the arc tube 18. The longitudinal sliding tube 15 is slidably sleeved on the outer wall of the flower suction tube 1 through a sealing ring 17. Figure 3A plurality of positioning grooves are arranged in an annular array inside the sealing ring 17, and a plurality of positioning blocks 16 are arranged in an annular array on the surface of the flower-absorbing tube 1 and are slidably connected to the positioning grooves. The positioning blocks 16 are strip-shaped structures and are arranged parallel to the axis of the flower-absorbing tube 1. Circumferential locking is achieved through the relative sliding of the positioning blocks 16 and the positioning grooves to prevent the pipeline part from circumferentially rotating relative to the flower-absorbing tube 1 and affecting the normal operation of the flower-picking part. The radial sliding tube 19, the longitudinal sliding tube 15, and the arc tube 18 can enable the flower-absorbing tube 1 to move relative to the negative pressure cylinder 20 for easy adjustment.

[0046] like Figure 2 A flower picking part is arranged at the end of the flower-sucking tube 1, and the flower picking part includes a plurality of flower picking claws 2 with spoon-shaped structures. A plurality of swing seats 6 protruding toward the outside of the flower-sucking tube 1 are arranged at the end of the flower-sucking tube 1 in an integral bending manner. A synchronous swing arm 5 is riveted on the flower-sucking claw 2, and one end of the synchronous swing arm 5 is rotatably connected to the swing seat 6; a plurality of limit blocks 9 are arranged in an annular array on the outside of the flower-sucking tube 1, and an annular synchronous ring 7 is arranged on the outer ring of the flower-sucking tube 1 through the limit blocks 9, and a limit groove 10 slidably connected to the limit blocks 9 is arranged on the inner ring of the synchronous ring 7; a pushing swing arm 8 is slidably connected between the synchronous ring 7 and the synchronous swing arm 5, and the rotation plane of the pushing swing arm 8, the synchronous ring 7 and the synchronous swing arm 5 is located on the radial axis of the flower-sucking tube 1; the synchronous ring 7 is driven by a plurality of first swing motors 11 fixed to the outer wall of the flower-sucking tube 1, and the first A swing arm 12 is fixed on the motor shaft of the swing motor 11, and a slide bar 13 is vertically fixed on the end of the swing arm 12. A plurality of slide frames are arranged in a ring array on the synchronous ring 7, and a slide groove 14 is arranged in the slide frame. The slide groove 14 is arranged along the radial axis of the flower-absorbing tube 1, and the slide bar 13 is slidably connected in the slide groove 14. The swing of the swing arm 12 is driven by the first swing motor 11 to move the slide bar 13. The component force of the slide bar 13 on the radial axis of the flower-absorbing tube 1 pushes the synchronous ring 7 up and down. During the movement of the synchronous ring 7, the synchronous swing arm 5 is driven to swing by pushing the swing arm 8, thereby realizing the mutual opening and closing of the flower picking claw 2; wherein a cutting protrusion 3 is arranged at the front end of the flower picking claw 2, and auxiliary protrusions 4 are arranged at the positions on both sides of the flower picking claw 2 corresponding to the cutting protrusion 3, and the cutting protrusion 3 and the auxiliary protrusion 4 are both serrated structures.

[0047] When using, the following steps are included:

[0048] In the first step, the main discharge valve mechanism and the auxiliary discharge valve mechanism are closed, a negative pressure is generated in the negative pressure cylinder 20 by the exhaust fan 25, and the flower picking claw 2 is unfolded by the first swing motor 11;

[0049] In the second step, the flower-picking tube 1 of the flower-picking mechanism is moved to the top of the flower by the mechanical arm, and the flower-picking tube is moved so that the slide is located inside the front end of the flower-picking tube, and the flower-picking claw 2 is retracted by the first swing motor 11 so that the cutting protrusion 3 cuts off the flower branch;

[0050] In the third step, the flowers are sucked into the negative pressure cylinder 20 through the flower suction tube 1, the longitudinal sliding tube 15, the arc tube 18, the radial sliding tube 19 and other pipelines through the negative pressure of the exhaust fan 25; after the suction is completed, the flower picking claws 2 are unfolded again through the pushing mechanism, because when the flower picking claws 2 are closed, there is still a certain process gap between them, so it does not affect the driving force of the negative pressure on the flowers;

[0051] The fourth step, wherein there are three flower storage cylinders 27, when the negative pressure cylinder 20 is full, the third flower storage cylinder 27 is firstly used to store flowers, and except for the auxiliary discharge valve mechanism at the bottom of the third flower storage cylinder 27, other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder 20 fall into the third flower storage cylinder 27; then the second flower storage cylinder 27 is used to store flowers, and except for the auxiliary discharge valve mechanisms at the bottom of the third and second flower storage cylinders 27, other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder 20 fall into the second flower storage cylinder 27;

[0052] The fifth step is to pack the flowers. The packaging bag is placed at the bottom of the third flower storage cylinder 27, and each auxiliary discharge valve mechanism is opened step by step, so that the flowers in the flower storage cylinder 27 fall into the packaging bag.

[0053] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A negative pressure flower suction system, characterized in that: include: A negative pressure mechanism, the negative pressure mechanism comprising a negative pressure cylinder (20), a negative pressure device connected to the top of the negative pressure cylinder (20) to provide negative pressure for the negative pressure cylinder (20), and a negative pressure connecting pipe for outputting negative pressure to the outside is arranged on the side wall of the negative pressure cylinder (20); A flower picking mechanism, the flower picking mechanism is arranged on the flower suction tube (1), the flower suction tube (1) is connected to the negative pressure connecting tube through a transfer tube, the flower picking mechanism comprises a plurality of flower picking claws (2) arranged in a circular array relative to the axis of the flower suction tube (1), the flower picking claws (2) are spoon-shaped structures, the front end of the flower picking claws (2) is provided with a cutting protrusion (3) for cutting flower branches, the end of the flower picking claws (2) is fixedly connected to a synchronous swing arm (5), the end of the synchronous swing arm (5) is rotatably connected to the end face of the front end of the flower suction tube (1), the end of the synchronous swing arm (5) is movably connected to the outer side wall of the front end of the flower suction tube (1) through a pushing mechanism, and the pushing mechanism pushes the synchronous swing arm (5) to make the flower picking claws (2) swing back and forth; Wherein, a main discharge valve mechanism for opening or closing the negative pressure cylinder (20) is connected to the bottom of the negative pressure cylinder (20).

2. A negative pressure flower suction system as claimed in claim 1, characterized in that: The pushing mechanism comprises a synchronous ring (7), a plurality of pushing swing arms (8) are arranged in a ring array on the synchronous ring (7), one end of the pushing swing arm (8) is rotatably connected to the synchronous ring (7), and the other end of the pushing swing arm (8) is rotatably connected to the end of the synchronous swing arm (5); the synchronous ring (7) is movably connected to the outer side wall of the flower suction tube (1) through a linear drive.

3. A negative pressure flower suction system as claimed in claim 2, characterized in that: The linear drive comprises a first swing motor (11) arranged in an annular array on the outer wall of a flower-absorbing tube (1); a swing arm (12) is fixed on the swing output shaft of the first swing motor (11); a slide rod (13) is fixed at the end of the swing arm (12); a plurality of slide racks are arranged in an annular array on a synchronization ring (7); a plurality of slide grooves (14) are arranged in the slide rack; the slide rod (13) is slidably connected in the slide groove (14); the angle between the axis of the slide groove (14) and the flower-absorbing tube (1) is greater than 30° and less than 180°; a plurality of limit grooves (10) are also arranged in an annular array on the synchronization ring (7); a plurality of limit blocks (9) embedded in the limit grooves (10) are arranged on the outer wall of the flower-absorbing tube (1).

4. A negative pressure flower suction system as claimed in claim 1, characterized in that: The spoon-shaped edge of the flower picking claw (2) is symmetrically provided with sawtooth-shaped auxiliary protrusions (4) at positions corresponding to both sides of the cutting protrusion (3).

5. A negative pressure flower suction system as claimed in claim 1, characterized in that: The transfer tube comprises a longitudinal sliding tube (15) slidably connected to the flower-sucking tube (1); a sealing ring (17) is arranged on the inner wall of the end of the longitudinal sliding tube (15); a plurality of positioning grooves are arranged in an annular array inside the sealing ring (17); a plurality of positioning blocks (16) slidably connected relative to the positioning grooves are arranged in an annular array on the surface of the flower-sucking tube (1); the positioning blocks (16) are strip-shaped structures and are arranged parallel to the axis of the flower-sucking tube (1).

6. A negative pressure flower suction system as claimed in claim 1, characterized in that: A plurality of flower storage cylinders (27) coaxial with the negative pressure cylinder (20) are arranged in an array below the negative pressure cylinder (20); the flower storage cylinders (27) are relatively stationary and fixed to the negative pressure cylinder (20) via a frame; a secondary discharge valve mechanism for opening or closing the flower storage cylinder (27) is arranged at the bottom of the flower storage cylinder (27); and the flower storage cylinder (27) at the top of the array is connected to the bottom of the negative pressure cylinder (20) via a main discharge valve mechanism.

7. A negative pressure flower suction system as claimed in claim 1, characterized in that: The main discharge valve mechanism and the auxiliary discharge valve mechanism both include a sliding frame fixed on a frame, the sliding frame includes two groups of sliding guide rails (28) arranged symmetrically relative to the center of the negative pressure cylinder (20) and the flower storage cylinder (27), the main discharge valve mechanism and the auxiliary discharge valve mechanism both include a gate plate (29) slidably connected between the sliding guide rails (28), the upper surface of the gate plate (29) is in sliding and sealing contact with the bottom of the negative pressure cylinder (20) and the flower storage cylinder (27), and a push plate (30) is provided at the end of the gate plate (29), and the push plate (30) is movably connected to the end of the sliding guide rail (28) through a reciprocating push mechanism.

8. A negative pressure flower suction system as claimed in claim 1, characterized in that: The reciprocating pushing mechanism comprises a reciprocating push rod (32), at least two groups of sliding seats (31) are coaxially fixed on the sliding guide rail (28), and the reciprocating push rod (32) and the sliding seat (31) are rotatably connected; the reciprocating pushing mechanism also comprises a second swing motor (33) fixed to the end of the sliding guide rail (28), a pushing arm (34) is fixed on the swing output shaft of the second swing motor (33), the end of the pushing arm (34) and the end of the reciprocating push rod (32) are movably connected through an intermediate connecting rod (35), and the two ends of the intermediate ends are movably connected to the pushing arm (34) and the reciprocating push rod (32) respectively through a universal ball head structure (36).

9. A negative pressure flower suction system as claimed in claim 1, characterized in that: An exhaust pipe (24) is connected to the top of the negative pressure cylinder (20) via a tapered cylinder (22), a connecting seat (23) is provided on the outer side wall of the exhaust pipe (24), and the negative pressure device comprises an exhaust fan (25), the exhaust fan (25) is fixed to the connecting seat (23), and the air intake end (26) of the exhaust fan (25) is connected to the exhaust pipe (24).

10. A method for using the negative pressure flower suction system according to claim 6, characterized in that: The steps include: The first step is to close the main discharge valve mechanism and the auxiliary discharge valve mechanism, generate negative pressure in the negative pressure cylinder (20) through the negative pressure device, and unfold the flower picking claw (2) through the pushing mechanism; The second step is to move the flower suction tube (1) of the flower picking mechanism to the top of the flower, and move the flower picking tube so that the slide is located inside the front end of the flower picking tube, and retract the flower picking claw (2) by pushing the mechanism, so that the cutting protrusion (3) cuts off the flower branch; In the third step, the flowers are sucked into the negative pressure cylinder (20) through the flower suction tube (1) and the negative pressure connecting tube by the negative pressure device; after the suction, the flower picking claws (2) are unfolded again by the pushing mechanism; The fourth step, wherein there are N flower storage cylinders (27), when the negative pressure cylinder (20) is full, firstly the Nth flower storage cylinder (27) is used to store flowers, and except for the auxiliary discharge valve mechanism at the bottom of the Nth flower storage cylinder (27), other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder (20) fall into the Nth flower storage cylinder (27); then the N-1th flower storage cylinder (27) is used to store flowers, and except for the auxiliary discharge valve mechanisms at the bottom of the Nth and N-1th flower storage cylinders (27), other main discharge valve mechanisms and auxiliary discharge valve mechanisms are opened, so that the flowers in the negative pressure cylinder (20) fall into the N-1th flower storage cylinder (27); The fifth step is to package the flowers. The packaging bag is placed at the bottom of the Nth flower storage cylinder (27), and each auxiliary discharge valve mechanism is opened step by step, so that the flowers in the flower storage cylinder (27) fall into the packaging bag.

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