A special seed collection device for small-area seeders

Abstract

A seed collection device specifically designed for small-area seeders, belonging to the field of agricultural machinery technology, is disclosed. It includes a seed collection bottle assembly, a left-side seed cleaning valve assembly, a right-side seed cleaning valve assembly, a control valve assembly, a negative pressure interface assembly, a vacuum pressure gauge assembly, and a venting valve. The left-side and right-side seed cleaning valve assemblies are respectively installed on the left and right sides of the seed collection bottle assembly. The left valve body of the left-side seed cleaning valve assembly and the right valve body of the right-side seed cleaning valve assembly are both connected to the seed collection bottle. The control valve assembly, negative pressure interface assembly, and vacuum pressure gauge assembly are all installed on top of the seed collection bottle. The bottom of the negative pressure pipe connector of the negative pressure interface assembly is connected to the seed collection bottle, and the measuring end of the vacuum pressure gauge of the vacuum pressure gauge assembly is connected to the seed collection bottle. The venting valve is installed on the seed collection bottle and is connected to it. Because this seed collection device for small-area seeders integrates two sets of seed cleaning valve assemblies, it is particularly suitable for small-area seeders using double seed metering devices.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery and equipment technology, specifically relating to a seed collection device for small-plot seeders used in the breeding industry. Background Technology

[0002] The plot seeder is a powerful tool for many seed breeders, and its widespread application is an important means of improving the level of mechanization in seed breeding. Its performance determines the development level of the seed breeding industry. During a single operation, the plot seeder needs to sow seeds of different crop varieties into corresponding plots (plots) according to a predetermined plan. To ensure effective seed metering and prevent missed sowing, the number of seeds metered in each plot before sowing must exceed the actual seed usage for that plot. This avoids missed sowing due to insufficient remaining seeds in the metering device later in the sowing process. After sowing in a plot is completed, before the seeds of other varieties for the next plot enter the metering device, any remaining seeds need to be quickly removed to prevent seed mixing. Currently, the following problems exist in practical applications:

[0003] 1. Currently, the seed collection device of the community seeder usually adopts a centralized collection method. Multiple seed meterers share one seed collection device, and all branch pipelines converge at the seed collection bottle. The pipeline is complex, the failure rate is high, and maintenance is difficult.

[0004] 2. Once the remaining seeds in the seed collection bottle reach the maximum limit, the seed collection bottle needs to be removed, emptied, and reinstalled, which is a rather cumbersome operation. In addition, to avoid the seed collection bottle being too heavy and inconvenient to operate due to being fully loaded, the capacity of the seed collection bottle is usually not very large, so the seed collection bottle needs to be cleaned frequently during operation.

[0005] 3. The remaining seed level in the seed collection bottle cannot be detected in real time and requires manual observation at any time. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems in the background art by providing a seed collection device for a small-area planter, so as to further improve the degree of automation and product performance.

[0007] The seed collection device for small-area seeders of the present invention is applicable to the research, development and upgrading of small-area seeders.

[0008] The seed collection device for plot seeders of the present invention is particularly suitable for plot seeders using dual seed meterers because it integrates two sets of seed cleaning valve assemblies (i.e., the left seed cleaning valve assembly and the right seed cleaning valve assembly).

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A seed collection device for a small-area seeder includes a seed collection bottle assembly, a left seed cleaning valve assembly, a right seed cleaning valve assembly, a control valve assembly, a negative pressure interface assembly, a vacuum pressure gauge assembly, and a venting valve.

[0011] The left and right seed cleaning valve assemblies are respectively installed on the left and right sides of the seed collection bottle assembly. The left valve body of the left seed cleaning valve assembly and the right valve body of the right seed cleaning valve assembly are both connected to the seed collection bottle. The control valve assembly, negative pressure interface assembly, and vacuum pressure gauge assembly are all installed on the top of the seed collection bottle. The control valve assembly is fixed on the top of the seed collection bottle. The bottom end of the negative pressure pipe connector of the negative pressure interface assembly is connected to the seed collection bottle. The measuring end of the vacuum pressure gauge of the vacuum pressure gauge assembly is connected to the seed collection bottle. The venting valve is installed on the seed collection bottle and is connected to the seed collection bottle.

[0012] Furthermore, the seed collection bottle assembly includes a seed collection bottle, a seed collection bottle cap, a locking device, and a photoelectric switch; the bottom of the seed collection bottle has an opening, the seed collection bottle cap is hinged to the rear side of the opening end face at the bottom of the seed collection bottle, and the seed collection bottle cap and the seed collection bottle are connected by the locking device; the photoelectric switch is connected and communicates with the top of the seed collection bottle.

[0013] Furthermore, the locking device includes a buckle and a hook; the hook is installed on the front side of the bottom opening end face of the seed collection bottle, and the buckle is installed on the bottom surface of the seed collection bottle cap. When the buckle is fastened to the hook and locked, the seed collection bottle cap is locked to the seed collection bottle.

[0014] Furthermore, the left-side seed cleaning valve assembly includes a left-side seed cleaning valve, a left rotary cylinder, two left quick connectors, and a left rear end cap; the left-side seed cleaning valve includes a left valve body and a left seed cleaning valve core;

[0015] The left valve body has a through hole 1 running through it in the front-to-back direction. A left cylindrical pipe connector is located at one of the through holes on the front side of the left valve body. The left rear end cap is installed on the rear end face of the left valve body. A through hole 2 is located on the left side wall of the left valve body. The left rotary cylinder is installed on the left side of the left valve body. The valve core of the left seed cleaning valve is disc-shaped. The output end of the left cylinder shaft of the left rotary cylinder rotates through the through hole 2 of the left valve body and is detachably connected to the outer circular surface of the left seed cleaning valve core located in the left valve body. An annular groove 3 is located on the outer circular surface of the left seed cleaning valve core. The left valve core sealing ring is embedded in the annular groove 3. The outer diameter of the left valve core sealing ring is equal to the diameter of the through hole 1 of the left valve body. Two left quick connectors are connected to and communicate with the left rotary cylinder. A through hole 3 is located on the right side wall of the left valve body. The left valve body communicates with the seed collection bottle through the through hole 3.

[0016] Furthermore, the right-side seed cleaning valve assembly includes a right-side seed cleaning valve, a right rotary cylinder, two right quick connectors, and a right end cap; the right-side seed cleaning valve includes a right valve body and a right seed cleaning valve core;

[0017] The right valve body has a through hole four running through its interior along the front-to-back direction. A cylindrical pipe connector is located at the four through holes on the front side of the right valve body. The right end cap is installed on the rear end face of the right valve body. A through hole five is located on the right side wall of the right valve body. A right rotary cylinder is installed on the right side of the right valve body. The valve core of the right seed cleaning valve is disc-shaped. The output end of the right cylinder shaft of the right rotary cylinder rotates through the through hole five of the right valve body and is detachably connected to the outer circular surface of the right seed cleaning valve core located inside the right valve body. An annular groove seven is located on the outer circular surface of the right seed cleaning valve core. The sealing ring of the right valve core is embedded in the annular groove seven. The outer diameter of the sealing ring of the right valve core is equal to the diameter of the through hole four of the right valve body. Two right quick connectors are connected to and communicate with the right rotary cylinder. A through hole six is ​​located on the left side wall of the right valve body. The right valve body communicates with the seed collection bottle through the through hole six.

[0018] Furthermore, the control valve assembly includes a valve body protective cover, a left solenoid valve, a right solenoid valve, two left quick connectors, two right quick connectors, a gas manifold quick connector, a gas manifold, a waterproof connector, a circuit board, two gas pipe mounting bases, a left indicator light, and a right indicator light.

[0019] The gas manifold is installed on the top of the seed collection bottle; the left and right solenoid valves are installed on the left and right sides of the top surface of the gas manifold and are connected to the gas manifold; two left quick connectors and two right quick connectors are connected to the corresponding screw holes of the left and right solenoid valves respectively; the circuit board is inserted into the slot provided inside the valve body protective cover and locked in place; the left indicator light and the right indicator light are installed on the left and right sides of the valve body protective cover respectively, the left solenoid valve is electrically connected to the left indicator light, and the right indicator light is electrically connected to the right solenoid valve; the left solenoid valve, the right solenoid valve, the left indicator light, the right indicator light, and the photoelectric switch are all electrically connected to the circuit board; the waterproof connector is installed at the front end of the valve body protective cover; two gas pipe fixing seats are installed on the left and right sides of the valve body protective cover respectively, and the valve body protective cover is fitted over the outside of the left and right solenoid valves; the gas manifold quick connector is installed on the gas manifold and the two are connected; the valve body protective cover is fixedly connected to the rear side of the gas manifold; the left solenoid valve is connected to the gas circuit of the left rotary cylinder, and the right solenoid valve is connected to the gas circuit of the right rotary cylinder.

[0020] Furthermore, the negative pressure interface assembly includes a negative pressure pipe joint and a joint sealing ring; the bottom of the negative pressure pipe joint is a flange structure, and the front of the negative pressure pipe joint is a circular pipe joint. There is an angle between the central axis of the circular pipe joint and the bottom surface of the flange of the negative pressure pipe joint, and the flange of the negative pressure pipe joint is installed on the top of the seed collection bottle.

[0021] Furthermore, the vacuum pressure gauge assembly includes a vacuum pressure gauge and a gauge base; the gauge base has a screw hole in the center, the measuring end of the vacuum pressure gauge is threadedly connected to the screw hole of the gauge base, the top of the seed collection bottle has a measuring hole, and the gauge base is installed at the measuring hole on the top of the seed collection bottle.

[0022] The advantages of this invention over the prior art are as follows: This invention can provide a single independent seed cleaning function for a plot seeder, a dual-path seed cleaning function required by an electric dual-seed metering device, a seed storage detection function, and a seed cleaning device with a flip-top seed dispensing design (the seed collection bottle cap 12 is hinged to the pin hole on the rear side of the opening end face at the bottom of the seed collection bottle 11 via a pin shaft; when the opening at the bottom of the seed collection bottle 11 needs to be closed, the seed collection bottle cap 12 and the seed collection bottle 11 are connected by a locking device), overcoming many problems existing in the current centralized seed cleaning technology. The specific details are as follows:

[0023] 1. Adopting an independent structural design, each seeder is equipped with a seed cleaning device, which avoids the cross distribution of negative pressure pipelines and simplifies the pipeline network configuration.

[0024] 2. A seed cleaning valve assembly is installed on each of the left and right sides of the seed collection bottle 11. The two seed cleaning valves of the two seed cleaning valve assemblies can be used in conjunction with the electric dual seed metering device.

[0025] 3. The seed collection bottle assembly has a photoelectric switch installed on the top of the seed collection bottle 11, which enables the seed collection bottle 11 to detect the amount of seeds stored. When the amount of seeds stored is close to the upper limit, the control system (an external component) will send a corresponding alarm signal to remind the operator to remove the seeds in time.

[0026] 4. The flip-top seed dispensing design is more convenient and faster than the conventional design that requires unscrewing the seed collection tank.

[0027] In summary, this device employs a working principle where a rotary cylinder controlled by a solenoid valve drives the core of the seed-cleaning valve to rotate. Sealing components are used at locations prone to leakage to ensure airtightness. It utilizes a large-capacity seed collection bottle with a built-in photoelectric switch for detecting remaining seed quantity. The seed collection bottle is also equipped with a vacuum pressure gauge and a venting valve. A bottom-opening seed-removal design allows for quick and convenient seed removal. Each sowing unit is independently equipped with this device, avoiding many problems associated with conventional seed collection devices, such as complex negative pressure piping, inability to detect remaining seed quantity online, frequent seed removal due to small seed collection bottle capacity, and inconvenient operation. Furthermore, this device integrates two sets of seed-cleaning valve assemblies, making it particularly suitable for small-area seeders using dual seed metering devices. Attached Figure Description

[0028] Figure 1 This is an isometric view of the external appearance of a seed collection device for a small-area planter according to the present invention;

[0029] Figure 2 This is an isometric view of the seed collection bottle assembly of the present invention;

[0030] Figure 3 This is a cross-sectional view of the seed collection bottle assembly of the present invention;

[0031] Figure 4This is an isometric view of the left-side seed cleaning valve assembly of the present invention;

[0032] Figure 5 This is an isometric sectional view of the left-side seed cleaning valve assembly of the present invention;

[0033] Figure 6 This is an isometric sectional view of the right-side seed cleaning valve assembly of the present invention;

[0034] Figure 7 This is an exploded view of the overall structure of the left-side seed cleaning valve assembly of the present invention;

[0035] Figure 8 This is an isometric view of the control valve assembly of the present invention;

[0036] Figure 9 This is an isometric sectional view of the control valve assembly of the present invention;

[0037] Figure 10 This is an exploded view of the overall structure of the control valve assembly of the present invention;

[0038] Figure 11 This is an isometric sectional view of the negative pressure interface assembly of the present invention;

[0039] Figure 12 This is an isometric sectional view of the vacuum pressure gauge assembly of the present invention;

[0040] Figure 13 This is an isometric view of the right-side seed cleaning valve assembly of the present invention;

[0041] Figure 14 This is an exploded view of the overall structure of the right-side seed cleaning valve assembly of the present invention.

[0042] The component names and corresponding reference numerals in the above figures are as follows:

[0043] 1-Seed collecting bottle assembly; 2-Left seed cleaning valve assembly; 3-Right seed cleaning valve assembly; 4-Control valve assembly; 5-Negative pressure interface assembly; 6-Vacuum pressure gauge assembly; 7-Vent valve; 11-Seed collecting bottle; 12-Seed collecting bottle cap; 13-Snap fastener; 14-Hook; 15-Seed collecting bottle mouth sealing strip; 16-Photoelectric switch; 201-Left valve body; 202-Left rotary cylinder; 203-Pan head screw one; 204-Left quick connector; 205-Left cylinder body protective cover; 206-Pan head screw two; 207-Left fixing seat; 208 - Pan head screw three; 209-Left cylinder body seal ring; 210-Left cylinder shaft; 211-Left cleaning valve core; 212-Left valve core seal ring; 213-Left rear end cover seal ring; 214-Left rear end cover 214; 215-Counterhead screw one; 216-Pan head screw four; 217-Left valve body seal ring; 218-Left cylindrical pipe fitting; 301-Right valve body; 302-Right rotary cylinder; 303-Pan head screw five; 304-Right quick coupling; 305-Right cylinder body protective cover; 306-Pan head screw six; 30 7-Right fixed seat; 308-Pan head screw seven; 309-Right cylinder body seal ring; 310-Right cylinder shaft; 311-Right cleaning valve core; 312-Right valve core seal ring; 313-Right end cover seal ring; 314-Right end cover; 315-Counterhead screw two; 316-Pan head screw eight; 317-Right valve body seal ring; 318-Right cylindrical pipe fitting; 401-Valve body protective cover; 402-Left solenoid valve; 403-Right solenoid valve; 404-Left quick coupling; 405-Right quick coupling; 406- Gas manifold; 407-Gas manifold quick connector; 408-Plug; 409-Pan head screw nine; 410-Waterproof connector; 411-Circuit board; 412-Counterhead self-tapping screw; 413-Control valve mounting seat; 414-Pan head screw ten; 415-Left indicator light; 416-Right indicator light; 417-Pan head screw eleven; 51-Negative pressure pipe connector; 52-Pan head screw twelfth; 53-Connector sealing ring; 61-Vacuum pressure gauge; 62-Gas gauge base; 63-Pan head screw thirteenth; 64-Base sealing ring. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0045] Specific implementation method one: as follows Figures 1-14As shown, this embodiment discloses a special seed collection device for a small-area seeder, including a seed collection bottle assembly 1, a left seed cleaning valve assembly 2, a right seed cleaning valve assembly 3, a control valve assembly 4, a negative pressure interface assembly 5, a vacuum pressure gauge assembly 6, and a venting valve 7.

[0046] The left seed cleaning valve assembly 2 and the right seed cleaning valve assembly 3 are respectively (via pan head screw 216 and pan head screw 316) installed on the left and right sides of the seed collection bottle 11 of the seed collection bottle assembly 1. The left valve body 201 of the left seed cleaning valve assembly 2 and the right valve body 301 of the right seed cleaning valve assembly 3 are both connected to the seed collection bottle 11. The control valve assembly 4, the negative pressure interface assembly 5, and the vacuum pressure gauge assembly 6 are all installed on the top of the seed collection bottle 11. The control valve assembly 4 is fixed to the top of the seed collection bottle 11. The bottom end of the negative pressure pipe connector of the pressure interface assembly 5 is connected to the seed collection bottle 11, and the measuring end of the vacuum pressure gauge 61 of the vacuum pressure gauge assembly 6 is connected to the seed collection bottle 11; the vent valve 7 is installed on the seed collection bottle 11 and connected to the seed collection bottle 11 (the vent valve 7 is connected to the left side wall of the seed collection bottle 11 by a thread, and the screw specification is G1 / 8; the function of the vent valve 7 is to quickly balance the air pressure in the seed collection bottle 11 before taking out the remaining seeds from the seed collection bottle 11 so as to open the seed collection bottle cap 12).

[0047] Furthermore, the seed collection bottle assembly 1 includes a seed collection bottle 11, a seed collection bottle cap 12, a locking device, and a photoelectric switch 16;

[0048] The seed collection bottle 11 (an irregular flat cylindrical structure, with a height × width × depth of 320 × 204 × 113 mm; made of transparent resin; due to its complex shape and structure, it is manufactured using 3D printing additive manufacturing method; the front side wall of the seed collection bottle 11 has two front bosses with screw holes; the rear side wall has a rear boss with screw holes; the screw holes of the two front bosses and one rear boss are used to install the collection device onto the seeding unit of the plot planter through three bolts (M8 × 30)) has an opening at the bottom (cylindrical in shape, with an inner diameter of 88 mm, allowing hands to be inserted into the seed collection bottle 11 for operation during assembly and debugging), and the seed collection bottle cap 12 and The seed collection bottle 11 is hinged to the rear side of the open end face at the bottom (a pin hole is provided on the rear side of the open end face at the bottom of the seed collection bottle 11, and the seed collection bottle cap 12 is hinged to the pin hole through a pin shaft). The seed collection bottle cap 12 and the seed collection bottle 11 are connected by a locking device (a groove is provided on the open end face at the bottom of the seed collection bottle 11, and the seed collection bottle mouth sealing strip 15 is placed in the groove to ensure the airtightness of the seed collection bottle cap 12 when it is closed). The photoelectric switch 16 is connected and communicates with the top of the seed collection bottle 11 (the photoelectric switch 16 is threadedly connected to the threaded hole on the top of the seed collection bottle 11, and the photoelectric switch 16 is model E3F1-DS5C4, used to detect the remaining seed quantity in the seed collection bottle 11).

[0049] Furthermore, the locking device includes a buckle 13 and a hook 14; the hook 14 is installed on the front side of the bottom opening end face of the seed collection bottle 11, and the buckle 13 is installed on the bottom surface of the seed collection bottle cap 12. When the buckle 13 is fastened to the hook 14 and locked, the seed collection bottle cap 12 is locked to the seed collection bottle 11.

[0050] Furthermore, the left seed cleaning valve assembly 2 includes a left seed cleaning valve, a left rotary cylinder 202, two left quick connectors 204, and a left rear end cover 214; the left seed cleaning valve includes a left valve body 201 and a left seed cleaning valve core 211;

[0051] The left valve body 201 (an irregular rectangular cylindrical structure made of resin, manufactured using 3D additive manufacturing) has a through hole (42mm in diameter) running through its interior along the front-to-back direction. A left cylindrical pipe connector 218 (40mm outer diameter) is located at one of the through holes on the front side of the left valve body 201. The rear of the left cylindrical pipe connector 218 is connected to the front of the left valve body 201 via a reducing pipe; the left cylindrical pipe connector 218 is used to connect to a negative pressure pipeline. An annular groove is provided on the rear end face of the left valve body 201. The left rear end cover sealing ring 213 is embedded in the annular groove 1. The left rear end cover sealing ring 213 has a specification of 2.0×50mm to ensure airtightness; the left rear end cover 214 (via countersunk screw 215) is installed on the rear end face of the left valve body 201 (after removing the left rear end cover 214, the left valve core 211 and other parts can be disassembled, assembled, and repaired); the left side wall of the left valve body 201 is provided with a through hole 2 (diameter of 6.2mm, with an annular groove 2 around the through hole 2, left cylinder The body sealing ring 209 is embedded in the second annular groove; the left cylinder body sealing ring 209 has a specification of 2.0×24mm to ensure airtightness. The left rotary cylinder 202 (via pan head screw 203) is installed on the left side of the left valve body 201. The left clearing valve core 211 is disc-shaped (41mm in diameter). The output end of the left cylinder shaft 210 of the left rotary cylinder 202 rotates through the through hole 2 of the left valve body 201 and can be connected to the outer surface of the left clearing valve core 211 located in the left valve body 201. Disassembly and connection (Under the action of compressed gas, the left cylinder shaft 210 can rotate relative to the cylinder body of the left rotary cylinder 202. The diameter of the left cylinder shaft 210 is 6mm. The output end of the left cylinder shaft 210 has a flat section milled along the axial direction. The outer circular surface of the left clearing valve core 211 is provided with a D-shaped inner hole along the radial direction. The output end of the left cylinder shaft 210 is engaged with the D-shaped inner hole of the left clearing valve core 211. When the left cylinder shaft 210 rotates, the left clearing valve core 211 also rotates accordingly.)The diameter of the left clearing valve core 211 is slightly smaller than the diameter of the through hole of the left valve body 201; an annular groove 3 is provided on the outer circumference of the left clearing valve core 211, and the left valve core sealing ring 212 is embedded in the annular groove 3. The outer diameter of the left valve core sealing ring 212 is equal to the diameter of the through hole of the left valve body 201 (the specification of the left valve core sealing ring 212 is 3.1×42mm to ensure the sealing performance when the left clearing valve core 211 is closed); two left quick connectors 204 (both model PC4-M5) are connected and communicate with the left rotary cylinder 202 (the two are connected by threads; when compressed gas is connected, the left cylinder shaft 210 will rotate 90°, thereby driving the left clearing valve core 211 to rotate, realizing the left side (The on / off control of the seed cleaning valve); the left cylinder protective cover 205 (via pan head screw 206) is installed on the outside of the left valve body 201 to protect the left rotary cylinder 202; the left fixed seat 207 (via pan head screw 208) is installed on the top of the left valve body 201 (used to bundle the air pipe for air circuit connection, which is not shown in the air pipe diagram); the right side wall of the left valve body 201 is provided with a through hole 3, through which the left valve body 201 communicates with the seed collection bottle 11 (the diameter of the through hole 3 is 42mm, and an annular groove 4 is provided around it. The left valve body sealing ring 217 is embedded in the annular groove 4. The specifications of the left valve body sealing ring 217 are 2.0×50mm to ensure the airtightness between the left valve body 201 and the mounting plane of the seed collection bottle 11).

[0052] Furthermore, the right-side seed cleaning valve assembly 3 includes a right-side seed cleaning valve, a right rotary cylinder 302, two right quick connectors 304, and a right end cap 314; the right-side seed cleaning valve includes a right valve body 301 and a right seed cleaning valve core 311;

[0053] The right valve body 301 (an irregular rectangular cylindrical structure made of resin, manufactured using 3D additive manufacturing) has four through holes (42mm in diameter) running along the front-to-back direction. A right cylindrical pipe connector 318 (40mm outer diameter) is located at the four through holes on the front side of the right valve body 301. The rear of the right cylindrical pipe connector 318 is connected to the front of the right valve body 301 via a reducing pipe. The right cylindrical pipe connector 318 is used to connect to the negative pressure pipeline. An annular groove is provided on the rear end face of the right valve body 301. Fifth, the right end cover sealing ring 313 is embedded in the annular groove five. The right end cover sealing ring 313 has a specification of 2.0×50mm to ensure airtightness; the right end cover 314 (via countersunk screw two 315) is installed on the rear end face of the right valve body 301 (after removing the right end cover 314, the right valve core 311 and other parts can be disassembled, assembled, and repaired); the right side wall of the right valve body 301 is provided with a through hole five (diameter of 6.2mm, with an annular groove six around the through hole five, the right cylinder body sealing ring five is installed in the annular groove six ... The sealing ring 309 is embedded in the annular groove six; the right cylinder sealing ring 309 has a specification of 2.0×24mm to ensure airtightness. The right rotary cylinder 302 (via pan head screw five 303) is installed on the right side of the right valve body 301. The right cleaning valve core 311 is disc-shaped (41mm in diameter). The output end of the right cylinder shaft 310 of the right rotary cylinder 302 rotates through the through hole five of the right valve body 301 and is detachably connected to the outer surface of the right cleaning valve core 311 located in the right valve body 301. Disconnection (Under the action of compressed gas, the right cylinder shaft 310 can rotate relative to the cylinder body of the right rotary cylinder 302. The diameter of the right cylinder shaft 310 is 6mm. The output end of the right cylinder shaft 310 has a section of flat surface milled along the axial direction. The outer circular surface of the right clearing valve core 311 is provided with a D-shaped inner hole II along the radial direction. The output end of the right cylinder shaft 310 cooperates with the D-shaped inner hole II of the right clearing valve core 311. When the right cylinder shaft 310 rotates, the right clearing valve core 311 also rotates accordingly.)The diameter of the right cleaning valve core 311 is slightly smaller than the diameter of the through hole 4 of the right valve body 301; an annular groove 7 is provided on the outer circular surface of the right cleaning valve core 311, and the right valve core sealing ring 312 is embedded in the annular groove 7. The outer diameter of the right valve core sealing ring 312 is equal to the diameter of the through hole 4 of the right valve body 301 (the specification of the right valve core sealing ring 312 is 3.1×42mm to ensure the sealing performance when the right cleaning valve core 311 is closed); two right quick connectors 304 (model PC4-M5) are connected and communicate with the right rotary cylinder 302 (the two are connected by threads; when compressed gas is connected, the right cylinder shaft 310 will rotate 90°, thereby driving the right cleaning valve core 311 to rotate, realizing the cleaning of the right side. (The on / off control of the seed valve); the right cylinder body protective cover 305 (via pan head screw 306) is installed on the outside of the right valve body 301 to protect the right rotary cylinder 302; the right fixed seat 307 (via pan head screw 308) is installed on the top of the right valve body 301 (used to bundle the air pipe for air circuit connection, which is not shown in the air pipe diagram); the left side wall of the right valve body 301 is provided with a through hole 6, through which the right valve body 301 communicates with the seed collection bottle 11 (the diameter of the through hole 6 is 42mm, and an annular groove 8 is provided around it. The right valve body sealing ring 317 is embedded in the annular groove 8. The specifications of the right valve body sealing ring 317 are 2.0×50mm to ensure the airtightness of the right valve body 301 and the mounting plane of the seed collection bottle 11).

[0054] Furthermore, the control valve assembly 4 includes a valve body protective cover 401, a left solenoid valve 402, a right solenoid valve 403, two left quick connectors 404, two right quick connectors 405, a gas manifold quick connector 407, a gas manifold 406, a waterproof connector 410, a circuit board 411, two gas pipe mounting bases 413, a left indicator light 415, and a right indicator light 416.

[0055] The gas manifold 406 (model 5Y3-2F, via pan head screw 409) is installed on the top of the seed collection bottle 11; the left solenoid valve 402 and the right solenoid valve 403 (both model SY3120-5LZD-M5, both with DC 24V operating voltage for their control coils) are installed on the left and right sides of the top surface of the gas manifold 406 and are connected to the gas manifold 406; the two left quick connectors 404 and the two right quick connectors 405 (both model POC4-M5C) are connected to the corresponding screw holes of the left solenoid valve 402 and the right solenoid valve 403, respectively;

[0056] Circuit board 411 (external dimensions: length × width × thickness = 50 × 20.1 × 1.5 mm) is inserted into a slot inside valve body protective cover 401 and locked in place (by countersunk self-tapping screws 412); left indicator light 415 and right indicator light 416 (both are 8mm green flat-head LED indicator lights) are respectively installed on the left and right sides of valve body protective cover 401. Left solenoid valve 402 is electrically connected to left indicator light 415, and right indicator light 416 is electrically connected to right solenoid valve 403 (used to indicate the working status of left solenoid valve 402 and right solenoid valve 403). Left solenoid valve 402, right solenoid valve 403, left indicator light 415, right indicator light 416, and photoelectric switch 16 are all electrically connected to circuit board 411; waterproof connector 410 (model PG11, and threaded) is installed at the front end of valve body protective cover 401 (used to guide electrical connections and provide protection).Specifically: the signal cable passes through the waterproof connector 410, with one end connected to the circuit board 411 and the other end connected to the signal terminal of the seed control unit (an external component). The waterproof connector 410 provides mechanical fixation for the signal cable, preventing damage to the connection between the signal cable and the circuit board 411 due to external forces. Two air pipe fixing seats 413 (used to fix the air pipes connecting the solenoid valve and prevent them from becoming tangled) are respectively (using pan head screws + 414) installed on the left and right sides of the valve body protective cover 401 (the air pipes used for bundling air connections are not shown in the diagram). The valve body protective cover 401 (made of resin and manufactured using 3D printing additive manufacturing) is fitted onto the outside of the left solenoid valve 402 and the right solenoid valve 403 (providing a certain degree of protection); the gas manifold quick connector 407 (model PC6-01, threaded) is installed on the gas manifold 406 (located on the left side of the gas manifold 406) and the two are connected (the gas manifold 406 has two interconnecting P ports, one of which is an air inlet, and the other P port is fitted with a plug 408 via thread; the gas manifold quick connector 407...). 07 and plug 408 not only connect the air passage but also secure the valve body protective cover 401. The valve body protective cover 401 is fitted over the outside of the left solenoid valve 402 and the right solenoid valve 403. Quick connectors 407 and plugs 408 are screwed into the left and right sides of the valve body protective cover 401, which not only enables the air passage function but also provides mechanical fixation, equivalent to fixing the valve body protective cover 401 to the air passage manifold 406 with screws respectively. The valve body protective cover 401 (via pan head screw 417) is fixed to the rear side of the air passage manifold 406. Fixed connections (the left quick connector 204 and the left quick connector 404 are connected by an air pipe to connect the left rotary cylinder 202 and the left solenoid valve 402; the right quick connector 304 and the right quick connector 405 are connected by an air pipe to connect the right rotary cylinder 302 and the right solenoid valve 403; the model of the above quick connectors is PC4-M5, and the specifications of the connecting air pipe are PVC air pipes with an outer diameter of 4mm. The connecting air pipes are not shown in the figure; the connecting air pipes are fixed on the left fixed seat 207 and the right fixed seat 307 respectively).

[0057] The left solenoid valve 402 is connected to the air circuit of the left rotary cylinder 202, and the right solenoid valve 403 is connected to the air circuit of the right rotary cylinder 302.

[0058] Furthermore, the negative pressure interface assembly 5 includes a negative pressure pipe connector 51 and a connector sealing ring 53;

[0059] The negative pressure pipe connector 51 (made of resin and manufactured using 3D printing additive manufacturing) has a flange structure at the bottom and a circular pipe connector at the front. The central axis of the circular pipe connector (outer diameter of 40mm) is at an angle to the bottom surface of the flange of the negative pressure pipe connector 51 (the angle between the central axis of the circular pipe connector and the bottom surface of the flange of the negative pressure pipe connector 51 is 75°; by selecting an appropriate installation angle, the layout path of the negative pressure pipeline is optimized, achieving the effect of shorter path and lower resistance). The flange of the negative pressure pipe connector 51 (via pan head screw 12 52) is installed on the top of the seed collection bottle 11 (the flange has eight connection holes evenly distributed along the circumference to connect with the top of the seed collection bottle 11; the bottom surface of the flange of the negative pressure pipe connector 51 has an annular groove 9, and the connector sealing ring 53 is embedded in the annular groove 9; the specification of the connector sealing ring 53 is 2.4×41mm to ensure the airtightness between the negative pressure pipe connector 51 and the mounting surface).

[0060] Furthermore, the vacuum pressure gauge assembly 6 includes a vacuum pressure gauge 61 and a gauge base 62;

[0061] The base 62 has a threaded hole at its center (thread specification G1 / 8, and multiple mounting holes are evenly distributed around the threaded hole on the base 62). The measuring end of the vacuum pressure gauge 61 is threadedly connected to the threaded hole of the base 62 (an annular groove is provided around the threaded hole at the bottom of the base 62, and the base sealing ring 64 is embedded in the annular groove; the specification of the base sealing ring 64 is 2.4×33mm to ensure the airtightness between the base 62 and the mounting surface). The top of the seed collection bottle 11 has a measuring hole, and the base 62 (via pan head screw 63) is installed at the measuring hole on the top of the seed collection bottle 11 (the specification of the vacuum pressure gauge 61 is YZ-40, and the range is 0 to -100KPa).

[0062] Working principle:

[0063] This device integrates two sets of mirror-symmetrical seed cleaning components, namely the left seed cleaning valve component 2 and the right seed cleaning valve component 3. The working principle of the two is exactly the same. Here, the left seed cleaning valve component 2 will be used as an example for explanation.

[0064] The seed collection bottle 11 is connected to the negative pressure pipeline on the plot seeder via the negative pressure pipe connector 51. During operation, its internal pressure is usually around -30 kPa.

[0065] The left solenoid valve 402 is installed on the air manifold 406. Port 1 of the left solenoid valve 402 is connected to port P on the air manifold 406. Ports 4 and 2 of the left solenoid valve 402 are connected to the two left quick connectors 204 on the left rotary cylinder 202 through air pipes.

[0066] When the coil of the left solenoid valve 402 is not energized, port 1 and port 4 of the left solenoid valve 402 are connected. Compressed gas passes through port P of the gas manifold 406, port 1 and port 4 of the left solenoid valve 402, and then enters the cylinder body of the left rotary cylinder 202 through the left quick connector 204 on the left rotary cylinder 202. At this time, the left cylinder shaft 210 remains stationary, and the valve core 211 of the left clearing valve is in the closed position.

[0067] When the coil of the left solenoid valve 402 is energized, ports 1 and 2 of the left solenoid valve 402 are connected. Compressed gas passes through port P of the gas manifold 406, port 1 of the left solenoid valve 402, port 2 of the left solenoid valve 402, and then enters the cylinder body of the left rotary cylinder 202 through the left quick connector 204 on the left rotary cylinder 202. At this time, under the action of air pressure, the left cylinder shaft 210 rotates 90°, and the valve core 211 of the left seed cleaning valve is in the open position. Under the action of negative pressure, the remaining seeds in the seed metering device pass through the negative pressure pipeline from the bottom of the seed metering device, through the left cylindrical pipe connector of the left valve body 201, the left valve body 201, and the through hole on the right side wall of the seed collection bottle 11, thus completing one seed cleaning process.

[0068] The photoelectric switch 16 is installed on the top of the seed collection bottle 11 and adopts the principle of laser diffuse reflection detection. When the number of remaining seeds inside the seed collection bottle 11 reaches the upper limit, the distance between the seeds and the photoelectric switch 16 enters the detection range. The intensity of the laser emitted by the photoelectric switch 16 reflected back by the seeds reaches a certain value. This change is detected by the photoelectric switch 16 and the corresponding signal is sent through the control system (an external component) to remind the operator to deal with it in time.

[0069] When collecting seeds, first observe the value of the vacuum pressure gauge 61. If the residual negative pressure inside the seed collection bottle 11 is too high, preventing the seed collection bottle cap 12 from opening, simply open the vent valve 7 on the seed collection bottle 11 to balance the internal and external air pressures, and the reading of the vacuum pressure gauge 6 will return to zero. The waterproof connector 410 is also connected to the signal terminal of the seed cleaning controller (an external component).

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0072] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for collecting excess seed for a small plot seeder, characterized in that: The seed collecting bottle assembly (1), the left seed cleaning valve assembly (2), the right seed cleaning valve assembly (3), the control valve assembly (4), the negative pressure interface assembly (5), the vacuum pressure gauge assembly (6) and the air release valve (7) are included. The seed collecting bottle assembly (1) includes a seed collecting bottle (11), a seed collecting bottle cover (12), a locking device and a photoelectric switch (16). The left seed cleaning valve assembly (2) includes a left seed cleaning valve, a left rotary cylinder (202), two left quick couplings (204) and a left rear end cover (214). The left seed cleaning valve includes a left valve body (201) and a left seed cleaning valve core (211). The right seed cleaning valve assembly (3) includes a right seed cleaning valve, a right rotary cylinder (302), two right quick couplings (304) and a right end cover (314). The right seed cleaning valve includes a right valve body (301) and a right seed cleaning valve core (311). The control valve assembly (4) includes a valve body protection cover (401), a left electromagnetic valve (402), a right electromagnetic valve (403), two left quick couplings (404), two right quick couplings (405), a gas circuit busbar quick coupling (407), a gas circuit busbar (406), a waterproof coupling (410), a circuit board (411), two gas circuit pipe fixing seats (413), a left indicator light (415) and a right indicator light (416). The negative pressure interface assembly (5) includes a negative pressure pipe coupling (51) and a coupling sealing ring (53). The left seed cleaning valve assembly (2) and the right seed cleaning valve assembly (3) are respectively installed on the left and right sides of the seed collecting bottle (11) of the seed collecting bottle assembly (1). The left valve body (201) of the left seed cleaning valve assembly (2) and the right valve body (301) of the right seed cleaning valve assembly (3) are both communicated with the seed collecting bottle (11). The control valve assembly (4), the negative pressure interface assembly (5) and the vacuum pressure gauge assembly (6) are all installed on the top of the seed collecting bottle (11). The control valve assembly (4) is fixed on the top of the seed collecting bottle (11). The bottom end interface of the negative pressure pipe coupling of the negative pressure interface assembly (5) is communicated with the seed collecting bottle (11). The measuring end of the vacuum pressure gauge (61) of the vacuum pressure gauge assembly (6) is communicated with the seed collecting bottle (11). The air release valve (7) is installed on the seed collecting bottle (11) and communicated with the seed collecting bottle (11). The bottom of the seed collecting bottle (11) is provided with an opening. The seed collecting bottle cover (12) is hinged to the rear side of the opening end surface of the bottom of the seed collecting bottle (11). The seed collecting bottle cover (12) is connected with the seed collecting bottle (11) through the locking device. The locking device includes a buckle (13) and a hook (14). The hook (14) is installed on the front side of the opening end surface of the bottom of the seed collecting bottle (11). The buckle (13) is installed on the bottom surface of the seed collecting bottle cover (12). When the buckle (13) is buckled on the hook (14) and locked, the seed collecting bottle cover (12) is locked on the seed collecting bottle (11).

2. The device for collecting the surplus seeds for the plot seeder according to claim 1, characterized in that: The left valve body (201) is internally provided with a through hole one extending in the front-rear direction, and the left cylindrical pipe joint (218) is arranged at the front side of the left valve body (201) at the through hole one; the left rear end cover (214) is installed on the rear end surface of the left valve body (201); the left side wall of the left valve body (201) is provided with a through hole two; the left rotary air cylinder (202) is installed on the left side of the left valve body (201), the left seed valve spool (211) is in the shape of a round cake, the output end of the left cylinder rotating shaft (210) of the left rotary air cylinder (202) rotates through the through hole two of the left valve body (201) and is detachably connected with the outer circular surface of the left seed valve spool (211) arranged in the left valve body (201); the annular groove three is arranged on the outer circular surface of the left seed valve spool (211), the left valve core sealing ring (212) is embedded in the annular groove three, and the outer diameter of the left valve core sealing ring (212) is equal to the diameter of the through hole one of the left valve body (201); the two left quick connectors (204) are connected with the left rotary air cylinder (202) and are in communication; the right side wall of the left valve body (201) is provided with a through hole three, and the left valve body (201) is in communication with the seed collecting bottle (11) through the through hole three.

3. The residual seed collecting device special for the small-area seeding machine according to claim 2, characterized in that: The right valve body (301) is internally provided with a through hole four extending in the front-rear direction, and the right cylindrical pipe joint (318) is arranged at the front side of the right valve body (301) at the through hole four; the right end cover (314) is installed on the rear end surface of the right valve body (301); the right side wall of the right valve body (301) is provided with a through hole five; the right rotary air cylinder (302) is installed on the right side of the right valve body (301), the right seed valve spool (311) is in the shape of a round cake, the output end of the right cylinder rotating shaft (310) of the right rotary air cylinder (302) rotates through the through hole five of the right valve body (301) and is detachably connected with the outer circular surface of the right seed valve spool (311) arranged in the right valve body (301); the annular groove seven is arranged on the outer circular surface of the right seed valve spool (311), the right valve core sealing ring (312) is embedded in the annular groove seven, and the outer diameter of the right valve core sealing ring (312) is equal to the diameter of the through hole four of the right valve body (301); the two right quick connectors (304) are connected with the right rotary air cylinder (302) and are in communication; the left side wall of the right valve body (301) is provided with a through hole six, and the right valve body (301) is in communication with the seed collecting bottle (11) through the through hole six.

4. The residual seed collecting device special for the small-area seeding machine according to claim 3, characterized in that: The gas confluence plate (406) is installed on the top of the seed collecting bottle (11); the left electromagnetic valve (402) and the right electromagnetic valve (403) are installed on the left and right sides of the top surface of the gas confluence plate (406) and communicate with the gas confluence plate (406); the two left quick connectors (404) and the two right quick connectors (405) are connected with the corresponding screw holes of the left electromagnetic valve (402) and the right electromagnetic valve (403) respectively; the circuit board (411) is inserted into the clamping groove arranged in the inside of the valve body protection cover (401) and is locked and fixed; the left indicator lamp (415) and the right indicator lamp (416) are installed on the left and right sides of the valve body protection cover (401) respectively, the left electromagnetic valve (402) is electrically connected with the left indicator lamp (415), the right electromagnetic valve (403) is electrically connected with the right indicator lamp (416), the left electromagnetic valve (402), the right electromagnetic valve (403), the left indicator lamp (415), the right indicator lamp (416) and the photoelectric switch (16) are electrically connected with the circuit board (411); the waterproof connector (410) is installed on the front end of the valve body protection cover (401); the two gas path pipe fixing seats (413) are installed on the left and right sides of the valve body protection cover (401) respectively, the valve body protection cover (401) is sleeved on the outside of the left electromagnetic valve (402) and the right electromagnetic valve (403); the gas confluence plate quick connector (407) is installed on the gas confluence plate (406) and communicates with the gas confluence plate (406); the valve body protection cover (401) is fixedly connected with the rear side of the gas confluence plate (406); the left electromagnetic valve (402) is connected with the left rotary air cylinder (202) in the gas path, and the right electromagnetic valve (403) is connected with the right rotary air cylinder (302) in the gas path.

5. The device for collecting the surplus seeds for the plot seeder according to claim 1, characterized in that: The bottom of the negative pressure pipe connector (51) is a flange structure, the front part of the negative pressure pipe connector (51) is a circular pipe connector, an included angle is arranged between the central axis of the circular pipe connector and the bottom surface of the flange of the negative pressure pipe connector (51), and the flange of the negative pressure pipe connector (51) is installed on the top of the seed collecting bottle (11).

6. The device for collecting the surplus seeds for the plot seeder according to claim 1, characterized in that: The vacuum pressure gauge assembly (6) comprises a vacuum pressure gauge (61) and a gauge seat (62); a screw hole is arranged in the center of the gauge seat (62), the measuring end of the vacuum pressure gauge (61) is threadedly connected with the screw hole of the gauge seat (62), a measuring hole is arranged on the top of the seed collecting bottle (11), and the gauge seat (62) is installed at the measuring hole arranged on the top of the seed collecting bottle (11).

Images