A demonstration air seed meter for field use

Abstract

The application discloses a kind of demonstration field air suction type seed metering device, it is related to the field of agricultural machinery technology, it includes seed metering device body, the seed metering device body includes support block, seed disc, air suction driving element, protective block, seed scraping block, seed metering tube and feeding device, seed disc is rotationally connected to the end of support block along thickness, negative pressure cavity is opened in the end of support block along transverse direction, air suction driving element is located in the end of support block away from seed disc, protective block is located in the end of seed disc away from support block, seed disc is located inside protective block, seed scraping block is located inside protective block, seed metering tube is connected with the lower end of protective block, feeding device is located in the end of protective block along transverse direction, the end of protective block close to feeding device is equipped with seed cleaning element, blocking element is equipped between feeding device and seed cleaning element, rotary plate is rotationally connected in protective block, rotary plate is located above seed metering tube, protective block is equipped with rotary element for driving rotary plate to rotate.The application has the effect of improving the seed cleaning efficiency of air suction type seed metering device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery technology, in particular to a demonstration field air suction type seed sowing device. BACKGROUND

[0002] At present, the air suction type seed sowing device is an agricultural machinery. As a large agricultural country, China has a large proportion of grain, vegetables and oil crops, among which there are many crops that need precision sowing, such as corn, soybeans, sorghum, cotton, rape, Chinese cabbage and peanuts, which are typical crops that need precision sowing. The seed sowing mode of the current seeding machine is divided into spoon type, finger clamp type, spoon clamp type, air suction type and air blowing type. Although the seeding speed and seeding accuracy have been greatly improved compared with the traditional seeding method, with the continuous development of science and technology, people's requirements for the manufacturing process of the air suction type seed sowing device are also getting higher and higher.

[0003] The related technology discloses a kind of air suction type seed sowing device in the China patent application with the announcement No.CN115997530B, including seed sowing device shell, built-in fan, drive motor, transmission intermediate wheel, transmission internal gear, transmission intermediate wheel bearing, closed wind abrasive block combination, seed sowing disc and seed sowing device cover.The air suction type seed sowing device, seed sowing device without shaft design, built-in fan, seed sowing device shell is the air box of fan and is the negative pressure chamber of seed sowing device, motor directly drives internal gear ring, so that it has the function of deceleration, air suction seed sowing disc adopts cup cover structure, without shaft installation;Seed sowing disc can be forward sowing and lateral sowing, solve the problem of being matched with numerical control seeding host, whole machine maintenance and maintenance are simple, sowing mode changes are simple, the size and specific gravity of seed particle are strong in adaptability, reduce seed particle breakage and reduce the advantages such as leakage rate, improve farmland operation efficiency.

[0004] For the related technology in the above, when different varieties of seeds are sowed, a small amount of different seeds will be mixed in the seed sowing device, and the seeds on the air suction seed sowing disc are not uniformly distributed in the initial state. When the operator directly sows, the first few seed sowing positions will be empty or mixed with other seeds. The air suction type seed sowing device described above stops when sowing is completed, and the seeds are left in the seed sowing device shell. The air suction type seed sowing device needs to continue to work to clean the seeds in the seed sowing device shell. This process consumes a lot of time, therefore, there is an urgent need for an air suction type seed sowing device to improve the seed cleaning efficiency of the air suction type seed sowing device. SUMMARY

[0005] In order to improve the seed cleaning efficiency of the air suction type seed sowing device, the present application provides a demonstration field air suction type seed sowing device.

[0006] The present application provides a demonstration field air suction type seed sowing device, which adopts the following technical scheme:

[0007] The utility model provides an example field air suction type seed metering device, including seed metering device body, seed metering device body includes support block, seed disc, air suction driving part, protection block, seed scraping block, seed metering tube and feeding device, seed disc is open to a plurality of seed suction mouth along the circumference, and seed disc is connected in vertical rotation in the one end of support block along the thickness direction, and the one end of support block is provided with negative pressure cavity along the lateral, and air suction driving part is located in the one end of support block far from seed disc, and air suction driving part is used to drive seed disc rotation, and protection block is located in the one end of seed disc far from support block, and protection block is detachably arranged with support block, and seed disc is located in the inside of protection block, and seed scraping block is fixedly connected to the inside of protection block and is located in the one end of support block close to negative pressure cavity, and protection block is equipped with elastic part between seed disc, and elastic part is used to make seed disc and support block closely adhere, and seed metering tube is located in the lower end of protection block and is connected with protection block, and feeding device is located in the one end of protection block along the lateral and is opposite with negative pressure cavity, and the one end of protection block close to feeding device is equipped with seed cleaning part, and seed cleaning part is located below feeding device, and seed cleaning part is used to remove the seed of feeding device, and feeding device is equipped with blocking part between seed cleaning part, and blocking part blocks the seed in feeding device, and the inside of protection block is equipped with rotary plate in vertical rotation, and rotary plate is located between feeding device and seed scraping block, and the one end of protection block far from support block is equipped with rotating part, and rotating part drives rotary plate rotation.

[0008] Through adopting the above technical scheme, in the initial state, the blocking part seals the lower end of the feeding device, before the seed metering starts, the blocking part rotates to unseal the lower end of the feeding device, the remaining seeds in the feeding device are discharged from the seed cleaning part, the blocking part rotates to seal the lower end of the feeding device, the operator adds seeds to the inside of the feeding device, the support block supports the seed disc, the air suction driving part drives the seed disc to rotate, the negative pressure cavity and the seed suction port cooperate to adsorb the seeds in the feeding device, at this time, the rotary plate seals the seed metering tube, because not all the seed suction ports have seeds before the seed metering starts, in order to ensure the uniformity of subsequent seed metering, the seed metering device needs to be debugged before the formal seed metering, until the seed suction ports uniformly adsorb seeds, when the first few seeds contact the seed scraping block, the seeds fall into the protection block, the rotary plate guides the seeds to be discharged from the seed cleaning part, after the seed metering device is debugged, the rotating part drives the rotary plate to rotate and seals the seed cleaning part, the seeds in the protection block are discharged from the seed metering tube, because there is a size error in the manufacturing process of the seed disc, the elastic part makes the seed disc closely adhere to the negative pressure cavity, which improves the seed cleaning efficiency of the air suction type seed metering device.

[0009] Optionally, the air suction driving member comprises a gear, a rotating shaft, an air suction pipe and a hexagonal shaft sleeve, the gear is located on the side of the supporting block away from the protection block, the rotating shaft penetrates through the gear and rotates coaxially with the gear, the rotating shaft penetrates through the supporting block, the seed sowing disc, the seed scraping block and the protection block in sequence and is rotationally connected with the supporting block, the seed scraping block and the protection block, the hexagonal shaft sleeve is sleeved outside the rotating shaft and is fixedly connected with the rotating shaft, the hexagonal shaft sleeve is located between the rotating shaft and the seed sowing disc and is attached to the seed sowing disc, and the air suction pipe is fixedly connected at the end of the supporting block away from the protection block and is in communication with the negative pressure cavity.

[0010] By adopting the above technical scheme, when sowing seeds, the seed sowing mechanical equipment is connected with the gear and drives the gear to rotate, the rotating shaft and the hexagonal shaft sleeve cooperate to drive the seed sowing disc to rotate, the seed sowing mechanical equipment cooperates with the air suction pipe to perform air suction operation, so that the seeds are located in the suction port and move with the seed sowing disc, and the convenience of seed sowing is improved.

[0011] Optionally, the feeding device comprises a feeding pipe, a storage tank, a connecting plate and two baffles, the connecting plate is detachably connected at the end of the protection block away from the supporting block and is located at the end of the protection block close to the negative pressure cavity, the storage tank is fixedly connected at the end of the connecting plate away from the protection block in the vertical direction, there is a gap between the storage tank and the seed sowing disc, the feeding pipe is arranged in the vertical direction and is in communication with the upper end of the storage tank, the lower end of the storage tank is designed as an open end, the two baffles are fixedly connected to the lower end of the storage tank in the vertical direction and are respectively located on the two sides of the storage tank in the horizontal direction, and the suction port is located between the two baffles and is attached to the seed sowing disc.

[0012] By adopting the above technical scheme, the connecting plate cooperates with the protection block to fix the storage tank, the operator adds seeds into the feeding pipe, the seeds fall into the storage tank along the feeding pipe, and the two baffles and the blocking piece cooperate to block the lower end of the storage tank, so that the convenience of seed addition is improved.

[0013] Optionally, the blocking piece comprises a first air cylinder, a first rotating shaft, a first rotating block and a blocking plate, the first rotating shaft is arranged in the horizontal direction and is rotationally connected to the lower end of the storage tank, the blocking plate is fixedly connected to the outside of the first rotating shaft and is located between the two baffles, the first rotating block is fixedly connected to the side of the first rotating shaft away from the blocking plate, the first air cylinder is arranged in the vertical direction and is located at the end of the storage tank away from the supporting block, the upper end of the first air cylinder is hingedly connected to the storage tank, and the telescopic end of the first air cylinder is slidingly connected to the end of the first rotating block away from the first rotating shaft.

[0014] By adopting the above technical scheme, the storage tank supports the first air cylinder, when it is necessary to clean seeds, the first air cylinder is contracted, the first air cylinder and the first rotating block cooperate to drive the first rotating shaft to rotate, the first rotating shaft drives the blocking plate to rotate and thus unblocks the lower end of the storage tank, the seeds fall into the cleaning piece and are discharged from the cleaning piece, and the convenience of seed cleaning is improved.

[0015] Optionally, the rotating member comprises a second cylinder, a second rotating block and a second rotating shaft, the second rotating shaft is located at the end of the protection block away from the support block, the second rotating shaft passes through the protection block and is fixedly connected with the rotating plate, the second rotating shaft is rotatably connected with the protection block, the second cylinder is arranged in the transverse direction and is located at the end of the protection block away from the support block, the second rotating block is located between the second cylinder and the second rotating shaft, the second cylinder is hingedly connected with the protection block, the second cylinder is hingedly connected with the second rotating block at the telescopic end, and the end of the second rotating block away from the second cylinder is fixedly connected with the second rotating shaft.

[0016] By adopting the above technical scheme, at the beginning of seed sowing, the rotating plate blocks the upper end of the seed sowing tube, and the first few seeds in the protection block slide along the surface of the rotating plate and fall to the seed cleaning member for discharge, when the seed sowing device is debugged, the second cylinder is elongated, the second cylinder and the second rotating block drive the second rotating shaft to rotate, the second rotating shaft drives the rotating plate to rotate and block the seed cleaning member, and at this time, the seeds in the protection block fall into the seed sowing tube, thereby improving the convenience of seed cleaning and sowing.

[0017] Optionally, the seed cleaning member comprises a closing plate, a guide cylinder and a seed cleaning tube, the closing plate is fixedly connected to the lower end of the connecting plate and is located at the end of the connecting plate close to the storage tank, the end of the closing plate away from the connecting plate is attached to the seed sowing disc, the baffle and the blocking plate are both located inside the closing plate, the closing plate is opposite to the rotating plate, the guide cylinder is fixedly connected to the lower end of the closing plate in the vertical direction, the upper end of the guide cylinder close to the end of the protection block is opposite to the rotating plate, and the seed cleaning tube is arranged in the transverse direction and is connected with the lower end of the guide cylinder.

[0018] By adopting the above technical scheme, when all the seeds in the storage tank need to be taken out, the blocking plate rotates, the seeds fall between the two baffles, the closing plate blocks the seeds, which is conducive to reducing the probability of the seeds falling to the outside of the seed sowing device, the seeds move along the guide cylinder and move to the seed cleaning tube, and the convenience of emptying the seeds in the storage tank is improved.

[0019] Optionally, the end of the support block close to the air suction pipe is detachably connected with a support frame, the end of the support frame close to the support block is fixedly provided with a zero setting plate, the zero setting plate is located between the support block and the storage tank, the end of the zero setting plate away from the support block is longitudinally provided with a plurality of positioning openings, the plurality of positioning openings are arranged in the circumferential direction of the zero setting plate, the end of the zero setting plate close to the storage tank is rotatably connected with a rotating disc, the rotating disc is fixedly provided with a connecting block at the end close to the storage tank, the end of the connecting block away from the rotating disc is hingedly connected with a positioning rod, the end of the positioning rod away from the connecting block is attached to the end of the seed sowing disc away from the support block, the end of the seed sowing disc away from the support block is circumferentially provided with a plurality of positioning grooves, the end of the positioning rod close to the connecting block is fixedly provided with a pointer, the end of the pointer away from the positioning rod is located in any positioning opening, a return spring is arranged between the pointer and the rotating disc, one end of the return spring is fixedly connected with the pointer, and the other end of the return spring is fixedly connected with the rotating disc.

[0020] By adopting the technical scheme, in order to improve the precision of seed sowing, the distance between the seed and the seed scraping block is kept consistent before seed sowing starts, the supporting frame supports the zero setting plate, the operator moves the pointer to move the pointer away from the zero setting plate, the pointer drives the positioning rod to rotate, during the rotation of the positioning rod, the end of the positioning rod away from the pointer is located in the positioning groove, the connecting block supports the positioning rod, the pointer is rotated, the positioning rod and the connecting block drive the rotating disc to rotate, so that the positioning rod drives the seed sowing disc to rotate, when the pointer is opposite to the uppermost positioning port, the pointer is released, the reset spring drives the pointer to reset, and the pointer is located in the positioning port, at this time, the positioning rod is separated from the positioning groove, and the convenience of angle adjustment of the seed sowing disc is improved.

[0021] Optionally, the elastic member comprises a moving block, two supporting springs, a moving cylinder, a connecting bolt and a limiting block, the moving block is located between the protection block and the seed sowing disc and is attached to the seed sowing disc, the two supporting springs are located between the moving block and the protection block and are respectively located at two sides of the moving block along the length direction, one end of the supporting spring is fixedly connected with the protection block, the other end of the supporting spring is fixedly connected with the moving block, the moving cylinder is located at one end of the protection block away from the supporting block, the moving cylinder passes through the protection block and is attached to the moving block, the moving cylinder and the protection block are slidingly connected along the length direction of the moving cylinder, the limiting block is fixedly connected to one end of the moving cylinder away from the moving block, the limiting block is attached to the protection block, the connecting bolt is located between the moving block and the seed sowing disc, the connecting bolt passes through the moving block and is located in the moving cylinder, the connecting bolt is threadedly connected with the moving cylinder and is slidingly connected with the moving block along the length direction of the moving cylinder.

[0022] By adopting the technical scheme, the connecting bolt and the moving cylinder cooperate to connect the moving block and the moving cylinder together, the limiting block limits the moving cylinder, in the initial state, the seed sowing disc is attached to the supporting block, when the seed sowing disc shakes, the seed sowing disc and the moving block cooperate to extrude the supporting spring, the supporting spring resets, and the supporting spring and the moving block cooperate to attach the seed sowing disc to the supporting block, thereby reducing the probability of shaking of the seed sowing disc and improving the stability of the seed sowing disc during the working process.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. In the initial state, the blocking piece blocks the lower end of the feeding device. Before the seed sowing starts, the blocking piece rotates to unblock the lower end of the feeding device. The remaining seeds in the feeding device are discharged from the seed cleaning piece. The blocking piece rotates to block the lower end of the feeding device. The operator adds seeds to the inside of the feeding device. The supporting block supports the seed sowing disc. The air suction driving piece drives the seed sowing disc to rotate. The negative pressure cavity and the seed suction port cooperate to adsorb the seeds in the feeding device. At this time, the rotating plate blocks the seed sowing tube. Before the seed sowing starts, not all the seeds are in the seed suction port. In order to ensure the uniformity of subsequent seed sowing, the seed sowing device needs to be debugged before the formal seed sowing. Until the seed suction port uniformly adsorbs the seeds, the first few seeds contact the seed scraping block and fall into the protection block. The rotating plate guides the seeds to be discharged from the seed cleaning piece. After the seed sowing device is debugged, the rotating piece drives the rotating plate to rotate and blocks the seed cleaning piece. The seeds in the protection block are discharged from the seed sowing tube, thereby improving the efficiency of the air suction type seed sowing device.

[0025] 2. When the seed needs to be cleaned, the first air cylinder contracts. The first air cylinder and the first rotating block cooperate to drive the first rotating shaft to rotate. The first rotating shaft drives the blocking plate to rotate and unblock the lower end of the storage tank. The seeds fall between the two baffles, move along the guide cylinder, and move to the seed cleaning tube, thereby improving the convenience of emptying the seeds in the storage tank.

[0026] 3. In order to improve the accuracy of seed sowing, the distance between the seed and the seed scraping block is kept consistent before the seed sowing starts. The supporting frame supports the zero setting plate. The operator moves the pointer away from the zero setting plate. The pointer drives the positioning rod to rotate. During the rotation of the positioning rod, the end of the positioning rod away from the pointer is located in the positioning groove. The connecting block supports the positioning rod. The rotating pointer drives the rotating disc to rotate together with the positioning rod and the connecting block, so that the positioning rod drives the seed sowing disc to rotate. When the pointer is opposite to the uppermost positioning port, the pointer is released. The reset spring drives the pointer to reset, so that the pointer is located in the positioning port. At this time, the positioning rod is separated from the positioning groove, thereby improving the convenience of adjusting the angle of the seed sowing disc. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole structure schematic diagram of the air suction type seed sowing device for a demonstration field.

[0028] Figure 2 It is an explosion schematic diagram of the internal structure of the protection block.

[0029] Figure 3 It is a schematic diagram of the structure of the feeding device.

[0030] Figure 4 It is a schematic diagram of the structure of the blocking piece.

[0031] Figure 5 is a schematic view of the seed cleaning piece structure.

[0032] Figure 6 is a schematic view of the air suction driving piece structure.

[0033] Figure 7 is a schematic view of the position relationship between the rotating plate and the seed tube.

[0034] Figure 8 is a schematic view of the elastic piece structure.

[0035] Figure 9 is a schematic view of the position relationship between the positioning rod and the positioning slot.

[0036] Reference signs: 1, seed metering device body; 11, support block; 111, negative pressure cavity; 12, seed metering disc; 121, seed suction port; 122, positioning slot; 13, protection block; 14, seed scraping block; 15, seed tube; 16, rotating plate; 2, air suction driving piece; 21, gear; 22, rotating shaft; 23, air suction tube; 24, hexagonal shaft sleeve; 3, feeding device; 31, feeding tube; 32, storage tank; 33, connecting plate; 34, baffle; 4, elastic piece; 41, moving block; 42, support spring; 43, moving cylinder; 44, connecting bolt; 45, limiting block; 5, seed cleaning piece; 51, closing plate; 52, guide cylinder; 53, seed cleaning tube; 6, blocking piece; 61, first air cylinder; 62, first rotating shaft; 63, first rotating block; 64, blocking plate; 7, rotating piece; 71, second air cylinder; 72, second rotating block; 73, second rotating shaft; 8, support frame; 81, zero setting plate; 82, positioning port; 83, rotating disc; 84, connecting block; 85, positioning rod; 86, pointer; 87, reset spring. DETAILED DESCRIPTION

[0037] The application will be further described in detail below with reference to all the accompanying drawings.

[0038] The embodiment of the application discloses a demonstration field air suction type seed metering device. EMBODIMENT

[0039] Reference Figure 1 and Figure 2 The demonstration field air suction type seed metering device comprises a seed metering device body 1, wherein the seed metering device body 1 comprises a support block 11, a seed metering disc 12, an air suction driving piece 2, a protection block 13, a seed scraping block 14, a seed tube 15 and a feeding device 3; the seed metering disc 12 is provided with a plurality of seed suction ports 121 in a circumferential direction; the seed metering disc 12 is rotationally connected to one end of the support block 11 along a thickness direction in a vertical direction; and the seed metering disc 12 and the seed suction port 121 are matched to drive the seed to rotate.

[0040] Reference Figure 1 and Figure 2The protection block 13 is located at the end of the seed plate 12 away from the support block 11, the protection block 13 is detachably arranged with the support block 11, the seed plate 12 is located inside the protection block 13, the seed scraping block 14 is fixedly connected to the inside of the protection block 13 and is located at the end of the support block 11 along the transverse direction, and the protection block 13 and the support block 11 cooperate to form a falling channel, when the seed contacts the seed scraping block 14, the seed is separated from the suction port 121 and falls.

[0041] With reference to Figure 1 and Figure 3 The feeding device 3 is located at the end of the protection block 13 away from the seed scraping block 14 and is opposite to the suction port 121. The feeding device 3 comprises a feeding pipe 31, a storage tank 32, a connecting plate 33 and two baffles 34. The connecting plate 33 is detachably connected to the end of the protection block 13 away from the support block 11, the storage tank 32 is fixedly connected to the end of the connecting plate 33 away from the protection block 13 along the vertical direction, a gap is left between the storage tank 32 and the seed plate 12, and the connecting plate 33 supports the storage tank 32. The feeding pipe 31 is arranged along the vertical direction and is in communication with the upper end of the storage tank 32. The operator adds seeds into the feeding pipe 31, and the seeds fall into the storage tank 32 along the feeding pipe 31. The lower end of the storage tank 32 is designed as an open structure, the two baffles 34 are fixedly connected to the lower end of the storage tank 32 along the vertical direction and are respectively located at the two sides of the storage tank 32 along the transverse direction, the suction port 121 is located between the two baffles 34, the two baffles 34 are in close contact with the seed plate 12, and the lower end of the storage tank 32 is provided with the blocking piece 6. The two baffles 34 and the blocking piece 6 cooperate to block the lower end of the storage tank 32.

[0042] With reference to Figure 1 and Figure 4 The blocking piece 6 comprises a first air cylinder 61, a first rotating shaft 62, a first rotating block 63 and a blocking plate 64. The first rotating shaft 62 is arranged along the transverse direction and is rotatably connected to the lower end of the storage tank 32. The blocking plate 64 is fixedly connected to the outer side of the first rotating shaft 62 and is located between the two baffles 34. The blocking plate 64 and the two baffles 34 cooperate to block the lower end of the storage tank 32, and the first rotating shaft 62 drives the blocking plate 64 to rotate. The first rotating block 63 is fixedly connected to the side of the first rotating shaft 62 away from the blocking plate 64. The first air cylinder 61 is arranged along the vertical direction and is located at the end of the storage tank 32 away from the support block 11. The first air cylinder 61 is hingedly connected to the storage tank 32. The first air cylinder 61 is slidingly connected to the end of the first rotating block 63 away from the first rotating shaft 62. When it is needed to discharge all the seeds in the storage tank 32, the first air cylinder 61 is retracted. The first air cylinder 61 and the first rotating block 63 cooperate to drive the first rotating shaft 62 to rotate. The first rotating shaft 62 drives the blocking plate 64 to rotate and thereby unblocks the lower end of the storage tank 32. The seeds fall downward from between the two baffles 34.

[0043] With reference to Figure 1 andFigure 5 The protective block 13 is provided with a seed cleaning piece 5 near one end of the first cylinder 61. The seed cleaning piece 5 is located below the storage tank 32 and is used to recycle the excess seeds in the storage tank 32. The seed cleaning piece 5 comprises a closing plate 51, a guide cylinder 52 and a seed cleaning pipe 53. The closing plate 51 is fixedly connected to the lower end of the connecting plate 33 and is located at one end of the connecting plate 33 near the storage tank 32. One end of the closing plate 51 away from the connecting plate 33 is attached to the seed sowing disc 12. The baffle plate 34 and the blocking plate 64 are both located inside the closing plate 51. The closing plate 51 shields the seeds, which helps to reduce the probability of the seeds falling outside the seed sowing device. The guide cylinder 52 is fixedly connected to the lower end of the closing plate 51 in the vertical direction. The seed cleaning pipe 53 is arranged in the horizontal direction and is connected to the lower end of the guide cylinder 52. When it is necessary to remove the residual seeds, the first cylinder 61 is retracted. The first cylinder 61 and the first rotating block 63 cooperate to drive the first rotating shaft 62 to rotate. The first rotating shaft 62 drives the blocking plate 64 to rotate, so that the seeds in the storage tank 32 fall downward from between the two baffle plates 34 to the inside of the closing plate 51. The seeds pass through the closing plate 51 and are discharged from the seed cleaning pipe 53 along the guide cylinder 52.

[0044] With reference to Figure 6 One end of the support block 11 near the seed scraping block 14 is provided with a negative pressure cavity 111. The air suction driving piece 2 is located at one end of the support block 11 away from the seed sowing disc 12. The air suction driving piece 2 is used to drive the seed sowing disc 12 to rotate and perform air suction operation on the negative pressure cavity 111. The air suction driving piece 2 comprises a gear 21, a rotating shaft 22, an air suction pipe 23 and a hexagonal shaft sleeve 24. The air suction pipe 23 is fixedly connected to the support block 11 away from the protective block 13 and is connected to the negative pressure cavity 111. The seed sowing mechanical equipment cooperates with the air suction pipe 23 to perform air suction operation. Since the negative pressure cavity 111 is connected to the seed suction port 121, when the air suction pipe 23 performs air suction, the gas in the negative pressure cavity 111 is discharged from the air suction pipe 23, so that the seeds are adsorbed in the seed suction port 121 and move with the seed sowing disc 12. The gear 21 is located at one side of the support block 11 away from the protective block 13. The rotating shaft 22 penetrates through the gear 21 and rotates coaxially with the gear 21. The rotating shaft 22 penetrates through the support block 11, the seed sowing disc 12, the seed scraping block 14 and the protective block 13 in sequence and is rotatably connected to the support block 11, the seed scraping block 14 and the protective block 13. The hexagonal shaft sleeve 24 is sleeved outside the rotating shaft 22 and is fixedly connected to the rotating shaft 22. The hexagonal shaft sleeve 24 is located between the rotating shaft 22 and the seed sowing disc 12 and is attached to the seed sowing disc 12. During seed sowing, the seed sowing mechanical equipment is connected to the gear 21 and drives the gear 21 to rotate. The rotating shaft 22 and the hexagonal shaft sleeve 24 cooperate to drive the seed sowing disc 12 to rotate.

[0045] With reference to Figure 3 and Figure 7The rotating plate 16 is vertically rotatably connected inside the protection block 13, is located between the guide cylinder 52 and the seed scraping block 14, is opposite to the end of the guide cylinder 52 close to the seed scraping block 14, the seed sowing pipe 15 is located at the lower end of the protection block 13 and is in communication with the protection block 13, the seed sowing pipe 15 is opposite to the rotating plate 16, and the rotating plate 16 blocks the upper end of the seed sowing pipe 15 in the initial state.

[0046] With reference to Figure 3 and Figure 5 Since not all the seeds in the seed suction port 121 are sucked before the seed sowing starts, the seed sowing device needs to be debugged before the formal seed sowing, until the seeds are uniformly sucked in the seed suction port 121, when the first few seeds are in contact with the seed scraping block 14, the seeds fall into the protection block 13, the rotating plate 16 guides the seeds to enter the guide cylinder 52 and is discharged from the seed cleaning pipe 53.

[0047] With reference to Figure 3 The end of the protection block 13 away from the support block 11 is provided with a rotating part 7, the rotating part 7 drives the rotating plate 16 to rotate. The rotating part 7 comprises a second air cylinder 71, a second rotating block 72 and a second rotating shaft 73, the second rotating shaft 73 is located at the end of the protection block 13 away from the support block 11, the second rotating shaft 73 penetrates through the protection block 13 and is fixedly connected with the rotating plate 16, the second rotating shaft 73 is rotatably connected with the protection block 13, and the second rotating shaft 73 drives the rotating plate 16 to rotate.

[0048] With reference to Figure 3, the second cylinder 71 is arranged transversely and located at one end of the support block 11 of the protection block 13, the second rotating block 72 is located between the second cylinder 71 and the second rotating shaft 73, the second cylinder 71 is hinged to the protection block 13, the telescopic end of the second cylinder 71 is hinged to the second rotating block 72, the end of the second rotating block 72 away from the second cylinder 71 is fixedly connected to the second rotating shaft 73, at the beginning of seed sowing, the rotating plate 16 blocks the upper end of the seed sowing pipe 15, the first few seeds in the protection block 13 are in contact with the seed scraping block 14, the seeds fall above the rotating plate 16, the rotating plate 16 guides the seeds to slide along the surface of the rotating plate 16 to the inside of the guide cylinder 52, and the seeds are discharged from the seed cleaning pipe 53 under the guidance of the guide cylinder 52, when the seed sowing device is debugged, the second cylinder 71 is elongated, the second cylinder 71 and the second rotating block 72 cooperate to drive the second rotating shaft 73 to rotate, the second rotating shaft 73 drives the rotating plate 16 to rotate and block the seed cleaning piece 5, at this time, the seeds in the protection block 13 fall into the seed sowing pipe 15, for example, the length of the field is 6m, the distance between adjacent two fields is 1m, and the advancing speed of the seed sowing device is set to 0.5m / s, when the seed sowing in one of the fields is completed, the gear 21 stops rotating at this time, the second cylinder 71 and the second rotating block 72 cooperate to drive the second rotating shaft 73 to rotate, the second rotating shaft 73 drives the rotating plate 16 to rotate and block the seed sowing pipe 15, after the seed sowing device moves for 2s, the second cylinder 71 and the second rotating block 72 cooperate to drive the second rotating shaft 73 to rotate, the second rotating shaft 73 drives the rotating plate 16 to rotate and unblock the seed sowing pipe 15, and the gear 21 continues to rotate, so that the seeds are in contact with the seed scraping block 14 and fall into the seed sowing pipe 15.

[0049] With reference to Figure 8 , the elastic piece 4 is arranged between the protection block 13 and the seed sowing disc 12, so that the seed sowing disc 12 is attached to the support block 11. The elastic piece 4 comprises a moving block 41, two support springs 42, a moving cylinder 43, a connecting bolt 44 and a limiting block 45, the moving block 41 is located between the protection block 13 and the seed sowing disc 12, the two support springs 42 are located between the moving block 41 and the protection block 13 and are respectively located at both sides of the moving block 41 along the length direction, one end of the support spring 42 is fixedly connected to the protection block 13, and the other end of the support spring 42 is fixedly connected to the moving block 41, and in the natural state, the seed sowing disc 12 is attached to the support block 11.

[0050] With reference to Figure 8The movable cylinder 43 is located at the end of the protection block 13 away from the support block 11, the movable cylinder 43 passes through the protection block 13 and is attached to the movable block 41, the movable cylinder 43 is slidably connected with the protection block 13 along the length direction of the movable cylinder 43, the limiting block 45 is fixedly connected to the end of the movable cylinder 43 away from the movable block 41, the limiting block 45 is attached to the protection block 13, the connecting bolt 44 is located between the movable block 41 and the seed sowing disc 12, the connecting bolt 44 passes through the movable block 41 and is located inside the movable cylinder 43, the connecting bolt 44 is threadedly connected with the movable cylinder 43 and is slidably connected with the movable block 41 along the length direction of the movable cylinder 43, the connecting bolt 44 and the movable cylinder 43 are matched to connect the movable block 41 and the movable cylinder 43 together, the limiting block 45 limits the movable cylinder 43, in the initial state, the seed sowing disc 12 is attached to the support block 11, when the seed sowing disc 12 moves, the seed sowing disc 12 and the movable block 41 cooperate to extrude the support spring 42, the support spring 42 pushes the movable block 41 to move towards the support block 11, and then the seed sowing disc 12 is attached to the support block 11, so that the probability of shaking of the seed sowing disc 12 is reduced, and the stability of the seed sowing disc 12 in the working process is improved.

[0051] With reference to Figure 9 The support block 11 is detachably connected with the support frame 8 at the end close to the air exhaust pipe 23, the support frame 8 is fixedly provided with the zero setting plate 81 at the end close to the support block 11, the zero setting plate 81 is located between the support block 11 and the material storage tank 32, and the support frame 8 supports the zero setting plate 81.

[0052] With reference to Figure 9 The connecting block 84 is hingedly connected with the positioning rod 85 at the end away from the rotating disc 83, the positioning rod 85 is attached to the end of the seed sowing disc 12 away from the support block 11, the end of the seed sowing disc 12 away from the support block 11 is provided with a plurality of positioning grooves 122 in the circumferential direction, the connecting block 84 is fixedly provided with the pointer 86 at the end close to the positioning rod 85, in order to improve the sowing accuracy, the distance between the seed and the seed scraping block 14 is kept consistent before sowing, the pointer 86 is moved away from the zero setting plate 81, the pointer 86 drives the positioning rod 85 to rotate, the end of the positioning rod 85 away from the pointer 86 is located in the positioning groove 122 during the rotation of the positioning rod 85, the connecting block 84 supports the positioning rod 85, the pointer 86 is rotated, the positioning rod 85 and the connecting block 84 drive the rotating disc 83 to rotate, so that the positioning rod 85 drives the seed sowing disc 12 to rotate.

[0053] With reference to Figure 9The zero adjusting plate 81 is longitudinally opened with a plurality of positioning openings 82 at one end away from the support block 11, the plurality of positioning openings 82 are arranged in the circumferential direction of the zero adjusting plate 81, the pointer 86 is provided with a reset spring 87 between the pointer 86 and the rotating disc 83, one end of the reset spring 87 is fixedly connected with the pointer 86, the other end of the reset spring 87 is fixedly connected with the rotating disc 83, when the pointer 86 is opposite to the uppermost positioning opening 82, the pointer 86 is loosened, the reset spring 87 drives the pointer 86 to reset, so that the pointer 86 is located in the positioning opening 82, at this time, the positioning rod 85 is separated from the positioning groove 122, and the convenience of angle adjustment of the seed sowing disc 12 is improved.

[0054] The embodiment of the application demonstrates the implementation principle of the air suction type seed sowing device for a field, before sowing, not all the suction ports 121 have seeds, therefore, in order to improve the uniformity of subsequent sowing, the seed sowing device needs to be debugged before formal sowing, until the suction ports 121 uniformly adsorb seeds, when the first few seeds contact the seed scraping block 14, the seeds fall into the inside of the protection block 13, the rotating plate 16 guides the seeds, the seeds enter into the guide cylinder 52 along the rotating plate 16, and are discharged from the seed cleaning pipe 53, after the debugging is completed, the rotating member 7 drives the rotating plate 16 to rotate, and blocks the guide cylinder 52, the seeds are discharged from the seed sowing pipe 15; when the sowing is completed, the first cylinder 61 is contracted, the first cylinder 61 and the first rotating block 63 cooperate to drive the first rotating shaft 62 to rotate, the first rotating shaft 62 drives the blocking plate 64 to rotate, and the blocking of the lower end of the storage tank 32 is removed, the seeds fall between the two baffles 34, the seeds move along the guide cylinder 52, and are discharged from the seed cleaning pipe 53, and the efficiency of seed cleaning of the air suction type seed sowing device is improved.

[0055] The above are the preferred embodiments of the application, and are not used to limit the protection scope of the application, therefore: all equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A demonstration air planter for field use, comprising a planter body (1), characterized in that: The seed sowing device body (1) comprises a supporting block (11), a seed sowing disc (12), a suction driving element (2), a protection block (13), a seed scraping block (14), a seed sowing tube (15) and a feeding device (3), the seed sowing disc (12) is provided with a plurality of suction seed holes (121) in a circumferential direction, the seed sowing disc (12) is rotatably connected to one end of the supporting block (11) in a vertical direction, a negative pressure cavity (111) is formed in one end of the supporting block (11) in a horizontal direction, the suction driving element (2) is located at one end of the supporting block (11) away from the seed sowing disc (12), the suction driving element (2) is used to drive the seed sowing disc (12) to rotate, the protection block (13) is located at one end of the seed sowing disc (12) away from the supporting block (11), the protection block (13) is detachably arranged on the supporting block (11), the seed sowing disc (12) is located inside the protection block (13), the seed scraping block (14) is fixedly connected to the inside of the protection block (13) and located at one end of the supporting block (11) close to the negative pressure cavity (111), an elastic element (4) is arranged between the protection block (13) and the seed sowing disc (12), the elastic element (4) is used to make the seed sowing disc (12) tightly adhere to the supporting block (11), the seed sowing tube (15) is located at a lower end of the protection block (13) and communicates with the protection block (13), the feeding device (3) is located at one end of the protection block (13) in the horizontal direction and faces the negative pressure cavity (111), the protection block (13) is provided with a seed cleaning element (5) at one end close to the feeding device (3), the seed cleaning element (5) is located below the feeding device (3), the seed cleaning element (5) is used to clean the excess seeds in the feeding device (3), a blocking element (6) is arranged between the feeding device (3) and the seed cleaning element (5), the blocking element (6) blocks the seeds in the feeding device (3), a rotating plate (16) is rotatably connected to the inside of the protection block (13) in the vertical direction, the rotating plate (16) is located between the feeding device (3) and the seed scraping block (14), the protection block (13) is provided with a rotating element (7) at one end away from the supporting block (11), the rotating element (7) drives the rotating plate (16) to rotate; the feeding device (3) comprises a feeding tube (31), a storage tank (32), a connecting plate (33) and two baffles (34), the connecting plate (33) is detachably connected to one end of the protection block (13) away from the supporting block (11) and located at one end of the protection block (13) close to the negative pressure cavity (111), the storage tank (32) is fixedly connected to one end of the connecting plate (33) away from the protection block (13) in the vertical direction, a gap is left between the storage tank (32) and the seed sowing disc (12), the feeding tube (31) is arranged in the vertical direction and communicates with an upper end of the storage tank (32), the lower end of the storage tank (32) is designed as an open structure, the two baffles (34) are both fixedly connected to the lower end of the storage tank (32) in the vertical direction and are located at both sides of the storage tank (32) in the horizontal direction, the suction seed holes (121) are located between the two baffles (34), and the two baffles (34) are both in close contact with the seed sowing disc (12).The blocking piece (6) comprises a first air cylinder (61), a first rotating shaft (62), a first rotating block (63) and a blocking plate (64), the first rotating shaft (62) is arranged in the transverse direction and is rotationally connected to the lower end of the storage tank (32), the blocking plate (64) is fixedly connected to the outer side of the first rotating shaft (62) and is located between the two baffles (34), the first rotating block (63) is fixedly connected to the side of the first rotating shaft (62) away from the blocking plate (64), the first air cylinder (61) is arranged in the vertical direction and is located at the end of the storage tank (32) away from the supporting block (11), the upper end of the first air cylinder (61) is hingedly connected to the storage tank (32), and the telescopic end of the first air cylinder (61) is slidingly connected to the end of the first rotating block (63) away from the first rotating shaft (62); the seed cleaning piece (5) comprises a closing plate (51), a guide cylinder (52) and a seed cleaning pipe (53), the closing plate (51) is fixedly connected to the lower end of the connecting plate (33) and is located at the end of the connecting plate (33) close to the storage tank (32), the end of the closing plate (51) away from the connecting plate (33) is attached to the seed sowing disc (12), the baffles (34) and the blocking plate (64) are located inside the closing plate (51), the closing plate (51) is opposite to the rotating plate (16), the guide cylinder (52) is fixedly connected to the lower end of the closing plate (51) in the vertical direction, the upper end of the guide cylinder (52) close to the end of the protective block (13) is opposite to the rotating plate (16), and the seed cleaning pipe (53) is arranged in the transverse direction and is in communication with the lower end of the guide cylinder (52); before formal seed sowing, the seed sowing device needs to be debugged until the seed suction ports (121) uniformly adsorb seeds, when the first few seeds contact the seed scraping block (14), the seeds fall into the protective block (13), the rotating plate (16) guides the seeds, the seeds enter the guide cylinder (52) along the rotating plate (16) and are discharged from the seed cleaning pipe (53), after the debugging is completed, the rotating member (7) drives the rotating plate (16) to rotate and blocks the guide cylinder (52), and the seeds are discharged from the seed sowing pipe (15).

2. The air-assisted seed metering device for field use according to claim 1, characterized in that: The air suction driving part (2) comprises a gear (21), a rotating shaft (22), an air suction pipe (23) and a hexagonal shaft sleeve (24), the gear (21) is located on the side of the supporting block (11) away from the protection block (13), the rotating shaft (22) penetrates through the gear (21) and rotates coaxially with the gear (21), the rotating shaft (22) penetrates through the supporting block (11), the seed sowing disc (12), the seed scraping block (14) and the protection block (13) in sequence and is rotationally connected with the supporting block (11), the seed scraping block (14) and the protection block (13), the hexagonal shaft sleeve (24) is sleeved outside the rotating shaft (22) and is fixedly connected with the rotating shaft (22), the hexagonal shaft sleeve (24) is located between the rotating shaft (22) and the seed sowing disc (12) and is attached to the seed sowing disc (12), and the air suction pipe (23) is fixedly connected to the end of the supporting block (11) away from the protection block (13) and is connected with the negative pressure cavity (111).

3. The air-assisted seed metering device for field demonstration according to claim 1, characterized in that: The rotating part (7) comprises a second air cylinder (71), a second rotating block (72) and a second rotating shaft (73), the second rotating shaft (73) is located at the end of the protection block (13) away from the supporting block (11), the second rotating shaft (73) penetrates through the protection block (13) and is fixedly connected with the rotating plate (16), the second rotating shaft (73) is rotationally connected with the protection block (13), the second air cylinder (71) is arranged in the transverse direction and is located at the end of the protection block (13) away from the supporting block (11), the second rotating block (72) is located between the second air cylinder (71) and the second rotating shaft (73), the second air cylinder (71) is hingedly connected with the protection block (13), the second air cylinder (71) is hingedly connected with the second rotating block (72) at the telescopic end, and the end of the second rotating block (72) away from the second air cylinder (71) is fixedly connected with the second rotating shaft (73).

4. The air-assisted seed metering device for field use according to claim 1, wherein: The supporting block (11) is detachably connected with a supporting frame (8) near one end of the air exhaust pipe (23), the supporting frame (8) is fixedly provided with a zero setting plate (81) near one end of the supporting block (11), the zero setting plate (81) is located between the supporting block (11) and the storage tank (32), a plurality of positioning openings (82) are longitudinally opened at one end of the zero setting plate (81) away from the supporting block (11), the plurality of positioning openings (82) are arranged in a circumferential direction of the zero setting plate (81), the zero setting plate (81) is rotatably connected with a rotating disc (83) at one end near the storage tank (32), the rotating disc (83) is fixedly provided with a connecting block (84) at one end near the storage tank (32), the connecting block (84) is hingedly connected with a positioning rod (85) at one end away from the rotating disc (83), one end of the positioning rod (85) away from the connecting block (84) is attached to one end of the seed sowing disc (12) away from the supporting block (11), a plurality of positioning grooves (122) are circumferentially arranged at one end of the seed sowing disc (12) away from the supporting block (11), the positioning rod (85) is fixedly provided with a pointer (86) at one end near the connecting block (84), one end of the pointer (86) away from the positioning rod (85) is located in any positioning opening (82), a return spring (87) is arranged between the pointer (86) and the rotating disc (83), one end of the return spring (87) is fixedly connected with the pointer (86), and the other end of the return spring (87) is fixedly connected with the rotating disc (83).

5. The air-assisted seed metering device for field use according to claim 1, wherein: The elastic member (4) comprises a moving block (41), two supporting springs (42), a moving cylinder (43), a connecting bolt (44) and a limiting block (45), the moving block (41) is located between the protective block (13) and the seed sowing disc (12) and is attached to the seed sowing disc (12), the two supporting springs (42) are located between the moving block (41) and the protective block (13), one end of the supporting spring (42) is fixedly connected with the protective block (13), and the other end of the supporting spring (42) is fixedly connected with the moving block (41), the moving cylinder (43) is located at one end of the protective block (13) away from the supporting block (11), the moving cylinder (43) penetrates through the protective block (13) and is attached to the moving block (41), the moving cylinder (43) is slidably connected with the protective block (13) in a length direction of the moving cylinder (43), the limiting block (45) is fixedly connected to one end of the moving cylinder (43) away from the moving block (41) and is attached to the protective block (13), the connecting bolt (44) is located between the moving block (41) and the seed sowing disc (12), the connecting bolt (44) penetrates through the moving block (41) and is located in the moving cylinder (43), the connecting bolt (44) is threadedly connected with the moving cylinder (43) and is slidably connected with the moving block (41) in the length direction of the moving cylinder (43).

Images