CN111642197B - Pneumatic conveying type seed precision seed metering device - Google Patents
Pneumatic conveying type seed precision seed metering device Download PDFInfo
- Publication number
- CN111642197B CN111642197B CN202010609915.8A CN202010609915A CN111642197B CN 111642197 B CN111642197 B CN 111642197B CN 202010609915 A CN202010609915 A CN 202010609915A CN 111642197 B CN111642197 B CN 111642197B
- Authority
- CN
- China
- Prior art keywords
- seed
- air
- cavity
- distribution
- net
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
Abstract
The invention discloses an air-assisted seed precision seed metering device which comprises a case, a seed net, a seed plate, a discharge pipe and an air flow distribution part, wherein the seed net is arranged on the case; a cavity is formed in the case, the cavity is divided into a first cavity and a second cavity, and a communication port is formed between the two cavities; the seed net is arranged at the communication port; the seed tray is rotatably arranged in the cavity and is provided with a plurality of seed sucking holes; the airflow distribution piece is provided with an air inlet and two air outlets which are respectively connected with the first cavity and the second cavity. According to the invention, the airflow is divided into two paths by the airflow distribution part and then respectively injected into the first chamber and the second chamber, and the air entering the second chamber enters the first chamber through the vent holes of the seed net, so that seeds on the seed net are in a jumping boiling state, the seeds are easily adsorbed by the seed suction holes on the seed plate, and the jumping seeds can play a role in seed cleaning; the two paths of air flows can not directly blow the seeds adsorbed by the seed plate, the seed sowing operation can not be influenced, and the air flows pass through fewer intermediate links and have small loss.
Description
Technical Field
The invention relates to the field of agricultural machinery, in particular to an air-assisted seed precision seeding device.
Background
At present, agricultural machinery depends on a seed metering device for seed supply and seeding, and the seed metering device can quantitatively and accurately separate seeds from a seed pile so as to meet the precision seeding requirement of crops. The pneumatic seeding device is a commonly used seeding device, can meet the requirement of high-speed seeding, and is widely applied to agricultural machinery. Patent CN103503612A provides an air flow disturbance type precision seed discharging device, which injects air flow into an air inlet chamber, so that the air flow enters the chamber from two positions of a seed supporting net and an air flow adjusting plate, so that pressure difference is formed between the front side and the back side of a seed discharging disc, and a vent groove on the seed discharging disc forms suction to suck seeds and convey the seeds to a seed discharging pipe to realize seed discharging operation. The air path in the patent is unreasonable in design, and in actual use, the air flow entering the seed chamber from the air flow adjusting plate can directly blow the seeds adsorbed by the air grooves on the seed discharging plate, so that the seeds fall off from the seed discharging plate to influence seed discharging, and the two air flows enter the seed chamber through the air inlet chamber, so that the loss is large, and the adjustment of the two air flows is difficult to achieve the expected effect; the collision of seed and entry easily takes place for this patent to throw kind of mouth of pipe, causes the seed to pop out the mouth of pipe, seed damage, has great influence to the grain distance homogeneity.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the pneumatic seed precision seeding device which is reasonable in air path design and does not influence seeding.
The technical scheme is as follows: in order to achieve the purpose, the air-assisted seed precision seed metering device comprises a case, a seed net, a seed plate, a discharge pipe and an air flow distribution part;
the case consists of a base and a shell, and the shell is fastened and fixed on the base so as to enclose a cavity; the cavity is divided into a first cavity and a second cavity, and a communication port is arranged between the two cavities; the first chamber and the second chamber are respectively provided with a first air inlet and a second air inlet; the case is also provided with a seed supply part;
the seed net is arranged at the communication port, a plurality of vent holes are formed in the seed net, and the seed net is obliquely arranged;
the tray is arranged in the cavity and can rotate relative to the case; a plurality of seed sucking holes arranged in a circumferential array are formed on the seed plate;
an inlet of the discharge pipe is in a rectangular funnel shape, one end of the discharge pipe is arranged in the first cavity and is close to the seed tray, and the other end of the discharge pipe is arranged outside the cavity;
the airflow distribution piece is provided with an air inlet and two air outlets, and the two air outlets are respectively connected with the first air inlet and the second air inlet.
Further, still include the pressure release wheel, the pressure release wheel sets up in the dorsal part of kind of dish and all the time with kind of dish contact.
Furthermore, the air distribution part is Y-shaped integrally and comprises an air inlet pipe part, a first air outlet pipe part and a second air outlet pipe part; and the two air outlets are respectively a first air outlet and a second air outlet which are positioned at the tail ends of the first air outlet pipe part and the second air outlet pipe part.
Further, the flow direction of the air flow in the air flow distribution piece is perpendicular to the axial direction of the disc; the first air outlet and the second air outlet are respectively positioned at the side ends of the first air outlet pipe part and the second air outlet pipe part, and the opening orientations of the first air outlet pipe part and the second air outlet pipe part are perpendicular to the opening orientation of the air inlet.
Further, the distribution device also comprises a distribution component which can adjust the proportion of the gas quantity discharged by the two air outlets.
Further, the distribution assembly comprises a distribution plate mounted at the branching position of the air distribution piece, the distribution plate being rotatably mounted with respect to the air distribution piece and being fixable with respect to the air distribution piece.
Furthermore, an airflow distribution cavity is formed in the intersection position of the air inlet pipe part, the first air outlet pipe part and the second air outlet pipe part in the airflow distribution part, one side of the airflow distribution cavity is open, and an end cover is fixedly installed at the open position of the airflow distribution cavity;
the distribution plate is arranged in the airflow distribution cavity; the distributor assembly further includes an adjustment structure mounted to the end cap for adjusting the angle of rotation of the distributor plate.
Further, the adjusting structure comprises an adjusting shaft, a rotating part and a locking unit;
the distribution plate is fixed on the adjusting shaft, the rotating piece is fixed at the end part of the adjusting shaft, and the locking unit can lock and fix the rotating piece relative to the airflow distribution piece.
Further, the seed supply part of the case comprises a seed groove formed in the case, the seed groove is provided with a seed inlet and a seed outlet, and the seed net is installed at the seed outlet to receive seeds flowing out of the seed outlet.
Further, a valve assembly is arranged at the seed outlet to control the size of an opening of the seed outlet, which is actually used for seed circulation;
the valve component comprises a valve and a regulating rod, the valve is arranged at the seed outlet and can translate relative to the seed outlet, and the translation movement of the valve is controlled by the regulating rod; the adjusting rod is L-shaped;
the chassis is provided with an adjusting groove, one straight rod part of the adjusting rod can move in the adjusting groove, the adjusting groove is provided with a plurality of holding grooves which are arranged in a linear array, and a narrow groove is arranged between every two adjacent holding grooves.
Has the advantages that: the air-assisted seed precision seed sowing device is provided with the independent air flow distribution part, air flow is divided into two paths and then is respectively injected into the first cavity and the second cavity, air entering the second cavity enters the first cavity through the air vents of the seed net, a disturbance effect can be formed on seeds on the seed net, the seeds on the seed net are in a jumping boiling state, the seeds are easily adsorbed by the seed sucking holes on the seed plate, the jumping seeds can play a seed cleaning effect, and the seeds adsorbed by the seed sucking holes are beaten down; the two paths of air flows can not directly blow the seeds adsorbed by the seed plate, the air flow condition in the first cavity can be greatly improved, the air flow can not influence the seed metering operation, and the air flow passes through fewer intermediate links, so that the loss is small and the efficiency is high.
Drawings
FIG. 1 is a first perspective outline view of an air-assisted seed precision metering device;
FIG. 2 is an exploded view of an air-assisted seed precision metering device;
FIG. 3 is a second perspective view of the pneumatic seed precision metering device;
FIG. 4 is a first cross-sectional view of an air-assisted seed precision metering device;
FIG. 5 is a second cross-sectional view of the pneumatic seed precision metering device;
FIG. 6 is an exploded view of the combination of the airflow distribution member and the distribution assembly;
FIG. 7 is a view of the structure of the air distribution member;
fig. 8 is a structural view of the regulating tank.
In the figure: 1-a chassis; 110-a housing; 120-a base; 11-a first chamber; 12-a second chamber; 13-a first air inlet; 14-a second air inlet; 15-seed outlet; 16-seed grooves; 17-seed inlet; 18-an adjustment tank; 19-a male housing portion; 2-planting a net; 3-a disc; 31-a seed suction hole; 4-a discharge pipe; 5-an air flow distribution member; 51-air inlet; 52-air inlet pipe part; 53-first air outlet pipe part; 54-a second air outlet pipe part; 55-a first air outlet; 56-a second air outlet; 57-a first flange portion; 58-a second flange portion; 59-an airflow distribution chamber; 6-a dispensing assembly; 61-a distribution plate; 62-an adjustment shaft; 63-a rotating member; 64-a locking unit; 641-screws; 642-star handle; 7-end cap; 8-a valve assembly; 81-a valve; 82-adjusting rod; 9-pressure relief wheel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The pneumatic seed precision seeding device shown in the attached figures 1-5 comprises a machine case 1, a seed net 2, a seed plate 3, a discharging pipe 4, an air flow distribution part 5 and a pressure relief wheel 9.
The case 1 is composed of a base 120 and a shell 110, the shell 110 is fastened and fixed on the base 120, so that an approximately circular cavity is enclosed by the base 120 and the shell, as shown in fig. 4, the cavity is divided into a first cavity 11 and a second cavity 12, wherein the first cavity 11 is a main working cavity, and a communication port is formed between the two cavities; the first chamber 11 and the second chamber 12 are provided with a first intake port 13 and a second intake port 14, respectively.
The machine case 1 is also provided with a seed supply part, the seed supply part is used for continuously providing seeds for the seed sowing device, the seed supply part comprises a seed groove 16 formed in the machine case 1, the seed groove 16 is provided with a seed inlet 17 and a seed outlet 15, the seed net 2 is arranged at the communication port and can receive the seeds flowing out of the seed outlet 15, and a plurality of ventilation holes are formed in the seed net 2 for air flow to pass through. The seed net 2 is inclined at a certain angle with the horizontal plane to ensure that the thickness of the seed layer laid on the seed net is relatively uniform. The seed tank 16 is used for temporarily storing seeds, the capacity of the seed tank is limited, in order to realize continuous seed supply, the seed inlet 17 can be connected with a seed box storing a large number of seeds so as to realize continuous seed supply, the seed box gradually releases the seeds to the seed tank 16, and the seed tank 16 gradually releases the seeds to the seed net 2 from the seed outlet 17.
As shown in fig. 5, the disc 3 is installed in the cavity and can rotate relative to the case 1, and the rotation of the disc can be driven by a motive power element such as a motor; it has a plurality of seed suction holes 31 that the circumference array set up to be formed with on it, seed suction hole 31 is with the just, the reverse both sides intercommunication of kind of a dish 3, also with cavity and outside atmosphere intercommunication (be provided with the air channel on the base 120), and be airtight connection between the edge of kind of a dish 3 and the base 120, just also just the both sides of kind of a dish 3 are only through seed suction hole 31 intercommunication, so, when the atmospheric pressure value difference that the just, reverse both sides of kind of a dish 3 is different produces the pressure differential, seed suction hole 31 can produce suction in order to adsorb the seed, along with the rotation of kind of a dish 3, it can convey the seed that seed suction hole 31 adsorbs to discharging pipe 4 and discharge through discharging pipe 4.
The housing 110 is formed with a protruding housing part 19, the seed inlet 17 is arranged on the upper side of the protruding housing part 19, and the seed groove 16 is surrounded by the inner wall of the protruding housing part 19, two wall surfaces in the housing 110, and the inward end surface of the disk 3.
The discharge pipe 4 is installed on the shell 110 and penetrates through the shell 110, one end of the discharge pipe is arranged in the first chamber 11 and is close to the seed plate 3, the other end of the discharge pipe is arranged outside the cavity and is used for receiving seeds conveyed by the seed suction hole 31 of the seed plate 3 and guiding the seeds out of the cavity to realize seed metering, and one end of the discharge pipe 4 arranged outside the shell 110 can be connected with a seed sowing pipe to guide the seeds to a target seed falling position; the main part of the discharging pipe 4 is a circular section, one end of the discharging pipe arranged in the first chamber 11 is provided with a square funnel-shaped inlet, and the end inclines towards the direction close to the seed plate 3 so that one edge of the square inlet is close to the end face of the seed plate 3 as much as possible, so that seeds falling from the seed suction hole 31 can smoothly fall into the square inlet, and the seeds are prevented from colliding with the pipe or can not smoothly fall into the discharging pipe 4.
As shown in fig. 3, the pressure relief wheel 9 is rotatably mounted with respect to the chassis 1, is disposed on the back side of the seed tray 3 and always contacts with the seed tray 3, along with the rotation of the seed tray 3, the pressure relief wheel 9 can sequentially block the opposite sides of the various seed suction holes 31 on the seed tray 3, when the opposite side of each seed suction hole 31 is blocked by the pressure relief wheel 9, the adsorption effect of the seed suction hole 31 will disappear, and the adsorbed seeds will also fall into the discharge pipe 4.
The airflow distribution member 5 includes a duct portion 52, a first outlet duct portion 53, and a second outlet duct portion 54, and is Y-shaped as a whole and has one air inlet 51 and two air outlets. The air inlet 51 is located at the front end of the air inlet duct portion 52, and can be connected to components such as a blower to inject air into the air distribution member 5, the first air outlet duct portion 53 and the second air outlet duct portion 54 are both communicated with the air inlet duct portion 52, and are branched from the rear end of the air duct portion 52 and extend backward, and the two air outlets are respectively a first air outlet 55 and a second air outlet 56 located at the ends of the first air outlet duct portion 53 and the second air outlet duct portion 54. The first outlet 55 and the second outlet 56 are respectively connected to the first inlet 13 and the second inlet 14 to respectively inject the air flow into the first chamber 11 and the second chamber 12.
The flow direction of the gas flow in the gas flow distribution part 5 is vertical to the axial direction of the seed plate 3; the first outlet 55 and the second outlet 56 are respectively located at the side ends of the first outlet duct portion 53 and the second outlet duct portion 54, and the opening directions (i.e. the normal direction of the plane where the outlets are located) of the first outlet 55 and the second outlet 56 are perpendicular to the opening direction of the air inlet 51. The peripheries of the first air outlet 55 and the second air outlet 56 are respectively provided with a first flange portion 57 and a second flange portion 58, the first flange portion 57 and the second flange portion 58 are respectively fixedly connected with the casing 110, a sealing ring can be arranged between each flange portion and the casing 110 to ensure sealing, and the first flange portion 57 and the second flange portion 58 not only have the function of enabling each air outlet to be in butt joint with the corresponding air inlet, but also have the function of firmly connecting the whole air flow distribution part 5 relative to the casing 110. Through the arrangement mode of the air inlet 51 and the two air outlets, the air distribution piece 5 is integrally distributed in the direction vertical to the axial direction of the seed plate 3, and the thickness direction of the air distribution piece is consistent with the axial direction of the seed plate 3, so that the compactness of the whole structure of the seed sowing device can be kept, and the air distribution piece 5 does not obviously increase the whole size of the seed sowing device.
Since the air flow distribution member 5 is generally Y-shaped, the first outlet duct portion 53 and the second outlet duct portion 54 are disposed around the outer casing portion 19, and the first flange portion 57 and the second flange portion 58 are disposed on two sides of the outer casing portion 19, respectively. Thus, the projection overlapping rate of the air distribution piece 5 and the housing 110 in the axial direction of the seed plate 3 can be increased as much as possible, and the compactness of the overall structure of the seed sowing device can be further improved.
Preferably, in the flowing direction of the airflow, the distances between the pipe walls of the first outlet duct portion 53 and the second outlet duct portion 54 on the side away from the casing 110 and the outer wall of the casing 110 are gradually reduced, so that the cross-sectional areas of the two in the flowing direction of the airflow are gradually reduced. By adopting the structure, the air ducts in the first air outlet duct part 53 and the second air outlet duct part 54 have certain obliquity, and the air flow can be guided to incline and smoothly enter the first cavity 11 and the second cavity 12, so that unnecessary troubles caused by turbulent flow due to the fact that the air flow is not smoothly turned because the air outlet is arranged at the side end can be prevented.
Based on above-mentioned seed metering device, its working method is as follows:
the seeds in the seed groove 16 flow to the seed net 2 through the seed outlet 15 and spread on the seed net 2 to form a seed layer. The blower blows air flow into the air flow distribution piece 5 from the air inlet 51, the air flow is distributed by the air flow distribution piece 5 to be changed into two paths which are respectively injected into the first chamber 11 and the second chamber 12 along the first air outlet pipe part 53 and the second air outlet pipe part 54, the air entering the second chamber 12 overflows from the seed net 2 to the first chamber 11, the air flow entering the first chamber 11 can enable the air pressure in the first chamber 11 to be increased, and thus the pressure difference can be generated on the front side and the back side of the seed plate 3, the suction hole 31 can generate suction force, and seeds can be adsorbed from the seed layer on the seed net 2; simultaneously, because the motion of air current, the seed on the kind net 2 can demonstrate the "boiling" state of beating, to anomalous seed such as maize, the removal resistance of the seed that this kind of state of beating can significantly reduce, and the gesture of adjustable seed makes the seed adsorbed by the seed suction hole 31 more easily, promote the success rate that the seed suction hole 31 adsorbs the seed greatly, in addition, because the seed in the seed layer is the state of beating, the seed that beats can be cleared up the seed that the seed suction hole 31 adsorbs, prevent to adsorb the seed more of the seed suction hole 31, when the seed suction hole 31 has adsorbed a plurality of seeds, generally all there is a seed to be in the strong status, all the other seeds are in the weak status, the seed that beats can be in the weak status is fallen down, realize the cleaning kind, guarantee that every seed suction hole 31 only adsorbs a seed.
Along with the rotation of kind of a dish 3, the seed hole 31 of inhaling transports the adsorbed seed to the entry position of discharging pipe 4, and pressure release wheel 9 is stopped up the reverse side of inhaling the hole 31 for the suction of inhaling the hole 31 disappears, and the seed drops from inhaling the hole 31 and drops to discharging pipe 4 in, and discharging pipe 4 is drawn forth the seed outside the cavity and is realized the seed metering, because the atmospheric pressure in the first cavity 11 is higher, partly gaseous in the first cavity 11 is gushed out in order to promote the seed discharge realization supplementary unloading of strength from discharging pipe 4.
Preferably, in order to facilitate the correct bouncing of the seeds on the seed net 2, the air flow through the seed net 2 needs to be adjusted, and therefore, in a preferred embodiment, the seed metering device further comprises a distribution assembly 6, and the distribution assembly 6 can adjust the ratio of the air quantity discharged by the two air outlets. The flow of the gas of the adjustable seed net 2 of flowing through of distribution assembly 6 for the seed is in the appropriate state of beating, not only conveniently inhales kind of a hole 31 and adsorbs the seed, and moreover, the operation of clearly planting can be carried out in beating of seed and a plurality of seeds are adsorbed in kind of a hole 31, so, can need not other clear kind of a structure of external equipment, practices thrift the cost greatly.
Specifically, as shown in fig. 7, an airflow distribution cavity 59 is formed in the airflow distribution part 5 at an intersection position of the air inlet duct portion 52, the first air outlet duct portion 53 and the second air outlet duct portion 54, an outward side of the airflow distribution cavity 59 is open, and an end cover 7 is fixedly mounted at the open position of the airflow distribution cavity 59; as shown in fig. 6, the distribution assembly 6 includes a distribution plate 61 installed in the airflow distribution chamber 59, and the distribution plate 61 is rotatably installed with respect to the airflow distribution member 5 and can be fixed with respect to the airflow distribution member 5. The rear end of the distribution plate 61 is rotatably mounted with respect to the airflow distribution member 5, and the first outlet duct portion 53 and the second outlet duct portion 54 diverge from the rear end of the airflow distribution member 5; the front end of the distribution plate 61 faces the air inlet 51.
The distribution plate 61 is installed in the gas flow distribution chamber 59; the distributor assembly 6 further comprises an adjustment structure mounted on the end cap 7 for adjusting the angle of rotation of the distributor plate 61. Specifically, the adjusting structure includes an adjusting shaft 62, a rotating member 63, and a locking unit 64; the distribution plate 61 is fixed to the adjustment shaft 62, the rotating member 63 is fixed to an end of the adjustment shaft 62, and the locking unit 64 can lock and fix the rotating member 63 to the airflow distribution member 5. The rotating member 63 is a fan-shaped structure, and has an arc-shaped slot, the locking unit 64 includes a screw 641 fixed on the end cover 7 and passing through the arc-shaped slot, and a star-shaped handle 642 screwed on the end of the screw 641, the star-shaped handle 642 can tightly press and fix the rotating member 63, and when the angle of the distributing plate 61 needs to be adjusted, the star-shaped handle 642 is released and the rotating member 63 is rotated.
In practical use, a corresponding relation table of the angle of the distributing plate 61 and the type and specification of the seeds can be prepared, and a user can know the angle of the distributing plate 61 by referring to the corresponding relation table and adjust the distributing plate 61 to the angle, so that the seeds are in a proper jumping state to assist seed cleaning.
In order to keep the amount of seeds on the seed net 2 proper, a valve assembly 8 is arranged at the seed outlet 15 to control the opening size of the seed outlet 15 for the actual seed to flow through; the valve assembly 8 comprises a valve 81 and an adjusting rod 82, the valve 81 is mounted at the outlet 15 and can translate relative to the outlet 15, and the translation movement of the valve is controlled by the adjusting rod 82; the adjusting rod 82 is L-shaped and is formed by two straight rod parts which are perpendicular to each other, wherein one straight rod part is connected with the valve 81. The chassis 1 is provided with an adjusting groove 18 (as shown in fig. 8), one straight rod portion of the adjusting rod 82 can move in the adjusting groove 18, the adjusting groove 18 is provided with a plurality of holding grooves arranged in a linear array, a narrow groove is arranged between every two adjacent holding grooves, the straight rod portion can be kept and fixed in the holding grooves, and only when the adjusting rod 82 is subjected to a large external force, the straight rod portion can extrude the narrow groove to enter the holding groove adjacent to the current holding groove. The valve component is convenient to adjust, a user can adjust the position of the valve 81 by taking the step distance (the distance between two adjacent retaining grooves) as a unit, so that the size of an opening of the seed outlet 15 which can actually allow the circulation of seeds is adaptive to the type of the seeds, compared with the adjustment by adopting a screw rod mode, the adjustment efficiency is high (the adjustment is carried out by taking the step distance as the unit), the position is easy to remember (the user can remember the relationship between the type of the seeds or the specification and which retaining groove the straight rod part is positioned in), the adjustment experience requirement is low, and the adjustment can be carried out by common users.
The air-assisted seed precision seed sowing device is provided with the independent air flow distribution part, air flow is divided into two paths and then is respectively injected into the first cavity and the second cavity, air entering the second cavity enters the first cavity through the air vents of the seed net, a disturbance effect can be formed on seeds on the seed net, the seeds on the seed net are in a jumping boiling state, the seeds are easily adsorbed by the seed sucking holes on the seed plate, the jumping seeds can play a seed cleaning effect, and the seeds adsorbed by the seed sucking holes are beaten down; the two paths of air flows can not directly blow the seeds adsorbed by the seed plate, the air flow condition in the first cavity can be greatly improved, the seed sowing operation can not be influenced, and the air flows pass through fewer intermediate links, so that the loss is low and the efficiency is high. The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. An air-conveying type seed precision seeding device is characterized by comprising a case (1), a seed net (2), a seed plate (3), a discharging pipe (4) and an air flow distribution part (5);
the case (1) is composed of a base (120) and a shell (110), wherein the shell (110) is fastened and fixed on the base (120) so that a cavity is defined by the base and the shell; the cavity is divided into a first chamber (11) and a second chamber (12), and a communication port is arranged between the two chambers; the first chamber (11) and the second chamber (12) are respectively provided with a first air inlet (13) and a second air inlet (14); the case (1) is also provided with a seed supply part;
the seed net (2) is arranged at the communication port, a plurality of vent holes are formed in the seed net, and the seed net is obliquely arranged;
the tray (3) is arranged in the cavity and can rotate relative to the case (1); a plurality of seed sucking holes (31) arranged in a circumferential array are formed in the seed tray (3);
one end of the discharge pipe (4) is arranged in the first cavity (11) and is arranged close to the seed tray (3), and the other end of the discharge pipe is arranged outside the cavity;
the air distribution piece (5) is provided with an air inlet (51) and two air outlets, and the two air outlets are respectively connected with the first air inlet (13) and the second air inlet (14).
2. The pneumatic seed precision seed metering device according to claim 1, characterized by further comprising a pressure relief wheel (9), wherein the pressure relief wheel (9) is arranged at the back side of the seed plate (3) and is always in contact with the seed plate (3).
3. The air-assisted seed precision seed metering device according to claim 1, characterized in that the air flow distribution part (5) is Y-shaped as a whole and comprises an air inlet pipe part (52), a first air outlet pipe part (53) and a second air outlet pipe part (54); the two air outlets are respectively a first air outlet (55) and a second air outlet (56) which are positioned at the tail ends of the first air outlet pipe part (53) and the second air outlet pipe part (54).
4. The pneumatic seed precision seed metering device according to claim 3, characterized in that the flow direction of the air flow in the air flow distribution part (5) is perpendicular to the axial direction of the seed plate (3); the first air outlet (55) and the second air outlet (56) are respectively positioned at the side ends of the first air outlet pipe part (53) and the second air outlet pipe part (54), and the opening directions of the first air outlet and the second air outlet are both vertical to the opening direction of the air inlet (51).
5. The pneumatic seed precision seed metering device according to claim 3, characterized by further comprising a distribution assembly (6) which can adjust the ratio of the amount of gas discharged from the two air outlets.
6. Air-fed seed precision seed metering device according to claim 5, characterized in that the distribution assembly (6) comprises a distribution plate (61) mounting the branching position of the air distribution piece (5), the distribution plate (61) being rotatably mounted with respect to the air distribution piece (5) and fixable with respect to the air distribution piece (5).
7. The air-assisted seed precision seed metering device according to claim 6, characterized in that an air flow distribution cavity (59) is formed in the air flow distribution part (5) at the intersection position of the air inlet pipe part (52), the first air outlet pipe part (53) and the second air outlet pipe part (54), one side of the air flow distribution cavity (59) is open, and an end cover (7) is fixedly installed at the open position of the air flow distribution cavity;
the distribution plate (61) is mounted in the gas flow distribution chamber (59); the distribution assembly (6) further comprises an adjusting structure mounted on the end cover (7) for adjusting the rotation angle of the distribution plate (61).
8. The pneumatic seed precision seed metering device of claim 7, wherein the adjusting structure comprises an adjusting shaft (62), a rotating member (63), and a locking unit (64);
the distributing plate (61) is fixed on the adjusting shaft (62), the rotating piece (63) is fixed at the end part of the adjusting shaft (62), and the locking unit (64) can lock and fix the rotating piece (63) relative to the airflow distributing part (5).
9. The pneumatic seed precision seed metering device according to claim 1, characterized in that the seed supply part of the machine case (1) comprises a seed groove (16) formed in the machine case (1), the seed groove (16) is provided with a seed inlet (17) and a seed outlet (15), and the seed net (2) is arranged at the seed outlet (15) to receive the seed flowing out of the seed outlet (15).
10. The pneumatic seed precision seed metering device according to claim 9, characterized in that a valve assembly (8) is installed at the seed outlet (15) to control the opening size of the seed outlet (15) for seed to flow through;
the valve assembly (8) comprises a valve (81) and an adjusting rod (82), the valve (81) is mounted at the outlet (15) and can translate relative to the outlet (15), and the translation movement of the valve is controlled by the adjusting rod (82); the adjusting rod (82) is L-shaped;
the chassis (1) is provided with an adjusting groove (18), one straight rod part of the adjusting rod (82) can move in the adjusting groove (18), the adjusting groove (18) is provided with a plurality of holding grooves which are arranged in a linear array, and a narrow groove is formed between every two adjacent holding grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010609915.8A CN111642197B (en) | 2020-06-30 | 2020-06-30 | Pneumatic conveying type seed precision seed metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010609915.8A CN111642197B (en) | 2020-06-30 | 2020-06-30 | Pneumatic conveying type seed precision seed metering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111642197A CN111642197A (en) | 2020-09-11 |
| CN111642197B true CN111642197B (en) | 2021-07-30 |
Family
ID=72342016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010609915.8A Active CN111642197B (en) | 2020-06-30 | 2020-06-30 | Pneumatic conveying type seed precision seed metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111642197B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111955081B (en) * | 2020-09-22 | 2024-03-08 | 安徽邓氏机械制造有限公司 | Intelligent traction type precise fertilizing and seeding machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005039317A1 (en) * | 2005-08-19 | 2007-02-22 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Feed system for single seed drills comprises hopper, below which is sloping seed mixer section and seed supply section, air being blown through outlets in mixer section, fluidizing bed of seeds and blowing them towards separator, e.g. drum |
| DE102007053442A1 (en) * | 2007-11-07 | 2009-06-10 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Pneumatic precision seed drill |
| CN202385475U (en) * | 2011-12-26 | 2012-08-22 | 农业部南京农业机械化研究所 | Pneumatic conveying-type centralized seeding system |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN107046883A (en) * | 2017-06-09 | 2017-08-18 | 青岛普兰泰克机械科技有限公司 | The double kinds of cavate precise seeders and its seed feeding method tested for crop breeding |
-
2020
- 2020-06-30 CN CN202010609915.8A patent/CN111642197B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005039317A1 (en) * | 2005-08-19 | 2007-02-22 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Feed system for single seed drills comprises hopper, below which is sloping seed mixer section and seed supply section, air being blown through outlets in mixer section, fluidizing bed of seeds and blowing them towards separator, e.g. drum |
| DE102007053442A1 (en) * | 2007-11-07 | 2009-06-10 | Amazonen-Werke H. Dreyer Gmbh & Co. Kg | Pneumatic precision seed drill |
| CN202385475U (en) * | 2011-12-26 | 2012-08-22 | 农业部南京农业机械化研究所 | Pneumatic conveying-type centralized seeding system |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN107046883A (en) * | 2017-06-09 | 2017-08-18 | 青岛普兰泰克机械科技有限公司 | The double kinds of cavate precise seeders and its seed feeding method tested for crop breeding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111642197A (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0998842B1 (en) | Nurse adapter for air seeders | |
| AU715442B2 (en) | Seed metering apparatus | |
| CN111642197B (en) | Pneumatic conveying type seed precision seed metering device | |
| US6883445B2 (en) | Dual configurable distribution nurse system | |
| TWI455735B (en) | Manifold for use in medicament dispenser | |
| EP1515634A2 (en) | Fragrance dispenser, domestic appliance including such a fragrance dispenser, and cartridge for such a fragrance dispenser | |
| CN203675584U (en) | Airflow disturbance precise seed-metering device | |
| US6142086A (en) | Air seeder singulation system | |
| CN212650072U (en) | Disc type single-path pneumatic seed sowing device | |
| CN106954410B (en) | Air suction type high-density precise hill planter | |
| EP3620040B1 (en) | Seed inductor apparatus | |
| CN208850156U (en) | A kind of general precision drilling feed mechanism for seed | |
| CN216292142U (en) | Air-suction soybean double-seedling-belt seed sowing device | |
| CN108901270B (en) | Universal seed sowing device suitable for precise sowing of beans | |
| CN109566018A (en) | One device duplicate rows high speed strength precision seeder | |
| CN113812237A (en) | Agricultural unmanned aerial vehicle pneumatic sowing unit and sowing method | |
| CN113179714A (en) | Airflow auxiliary type precision seeder | |
| CN217564093U (en) | High-speed seed disturbing and metering device | |
| CN214482208U (en) | Electronic suction-blowing multi-row multifunctional seeder general seed sowing device | |
| CN214482206U (en) | Top-mounted air blast mechanism for seed metering of universal seed metering device of electronic suction-blowing type seeder | |
| CN219205213U (en) | Broadcasting device and unmanned aerial vehicle | |
| CN212629167U (en) | Case structure and row's material ware | |
| CN117256268A (en) | Seed metering device | |
| WO2023209665A1 (en) | A medicament dispenser for dispersing dry powder medicaments | |
| CN117016107A (en) | Air suction type double-row seeder for vegetable seeding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |