CN212851750U - Electric drive type multi-crop Venturi seed metering device - Google Patents
Electric drive type multi-crop Venturi seed metering device Download PDFInfo
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- CN212851750U CN212851750U CN202021209210.9U CN202021209210U CN212851750U CN 212851750 U CN212851750 U CN 212851750U CN 202021209210 U CN202021209210 U CN 202021209210U CN 212851750 U CN212851750 U CN 212851750U
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Abstract
The utility model discloses an electricity drive many crops venturi seed metering device of formula, its technical scheme is: the seed box is arranged above the seed sowing device, and the venturi air pipe is arranged below the seed sowing device; the seed metering device comprises a shell, and a spiral seed metering wheel set and a stirring shaft set which are arranged in the shell, wherein the spiral seed metering wheel set and the stirring shaft set are connected with a driving device; the venturi air pipe comprises an air pipe and a valve, a rectangular opening is formed in the bottom of the air pipe, and the valve is fixed to the bottom of the venturi air pipe through a pin shaft and a tension spring. The utility model can realize the seed discharging of various crops, and has simple operation; and the negative pressure seed suction can be realized, uniform and ordered seed flow is formed, and the seeding effect is improved.
Description
Technical Field
The utility model relates to the field of agricultural machinery, especially, relate to an electricity drives many crops venturi seed metering device of formula.
Background
In order to meet the requirement of large-scale planting of crops such as rice and wheat, the seeding machinery gradually develops towards an efficient and intelligent control pneumatic centralized-type direction. At present, the existing rice and wheat seeders in China generally adopt mechanical grooved pulley type seed metering devices, each seeding row needs to be provided with one seed metering device, large-scale wide-width operation needs to be provided with a large number of seed metering devices, the arrangement of machines is too bulky, a transmission mechanism is complex, and the reliability of the machines is seriously influenced. Moreover, the requirements on the driving torque of a large number of seed sowing devices are high, the electric-driving seed sowing realization difficulty is high, the precision is limited, each seed sowing device is only suitable for a single crop, and the cost performance is not high.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an electric-driven multi-crop Venturi seed-metering device which can realize the seed metering of various crops and has simple operation; and the negative pressure seed suction can be realized, uniform and ordered seed flow is formed, and the seeding effect is improved.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
the embodiment of the utility model provides an electrically-driven multi-crop Venturi seed metering device, which comprises a seed box, a seed metering device and a Venturi air pipe, wherein the seed box is arranged above the seed metering device, and the Venturi air pipe is arranged below the seed metering device;
the seed metering device comprises a shell, and a spiral seed metering wheel set and a stirring shaft set which are arranged in the shell, wherein the spiral seed metering wheel set and the stirring shaft set are connected with a driving device; the venturi air pipe comprises an air pipe and a valve, a rectangular opening is formed in the bottom of the air pipe, and the valve is fixed to the bottom of the venturi air pipe through a pin shaft and a tension spring.
As a further implementation mode, a seed cleaning plate is arranged at the bottom of the shell, the seed cleaning plate is tightly attached to the outer edge of the spiral seed sowing wheel set, and the upper end surface of the seed cleaning plate is higher than the lower end surface of the spiral seed sowing wheel set; the casing internally mounted has seed metering wheel protecting cover, and seed metering wheel protecting cover is located spiral seed metering wheelset top and divide into front chamber and back chamber with the clear seed board with the casing.
As a further implementation manner, the spiral seed metering wheel group comprises a seed metering wheel shaft and a plurality of seed metering wheels axially arranged along the seed metering wheel shaft, the seed metering wheels are provided with central holes, and the adjacent seed metering wheels are positioned with the gear teeth through the central holes to realize the staggered and spiral distribution of the gear teeth; the included angle between the gear teeth of the adjacent seed sowing wheels is 10-15 degrees.
As a further implementation mode, the sections of the two ends of the seeding wheel shaft are circular, and the section of the middle section of the seeding wheel shaft is hexagonal; a partition plate I is arranged between adjacent seed metering wheels, partition plates II are arranged at two ends of each partition plate I, the center hole of each partition plate I is hexagonal, and the center hole of each partition plate II is circular.
As a further implementation mode, a square hole is formed in the interior of the seed shaft along the axial direction, and the seed shaft is connected with a seed driving shaft through the square hole; the seed sowing driving shaft is connected with the driving device.
As a further implementation mode, the seed metering driving shaft is connected with a bearing seat through a bearing, and the bearing seat is fixed on the end cover; the end covers are symmetrically arranged on two sides of the shell, eagle beak type openings are formed in the edges of the end covers, and the directions of the openings at two ends of the end covers are opposite.
As a further implementation manner, the stirring shaft group comprises a stirring shaft main body and a plurality of stirring rods which are axially and obliquely fixed along the stirring shaft main body at intervals, the included angle between each stirring rod and the stirring shaft main body is 60 degrees, and the radial included angle between any stirring rod and two adjacent stirring rods is 60 degrees and 30 degrees respectively.
As a further implementation manner, the driving device comprises a servo motor, a speed reducer and a gear set, wherein the servo motor is connected with the spiral seed sowing wheel set and the stirring shaft set through the speed reducer and the gear set, so that the spiral seed sowing wheel set and the stirring shaft set can be arranged according to the following ratio of 5: a gear ratio of 3.
As a further implementation manner, the gear set comprises a gear I, a gear II, a gear III and a gear IV, wherein the gear III is meshed with the gear IV and the gear I through the gear II; the gear I is connected with the spiral seed sowing wheel set, and the gear IV is connected with the stirring shaft set.
As a further implementation mode, a feeding port is arranged at the top of the air pipe, and one end of the connecting position of the feeding port and the air pipe is lower than the other end; the sections of the two ends of the air pipe are circular, and the section of the middle of the air pipe is rectangular; and the outlet end of the air pipe is longer than the inlet end.
Above-mentioned the utility model discloses an embodiment's beneficial effect as follows:
(1) the spiral seed-metering wheel group of one or more embodiments of the utility model is arranged on the seed-metering driving shaft, the seed-metering driving shaft is connected with the shell through the end cover, when the seed-metering wheel is changed, only the bolt of the end cover at one end needs to be loosened, and the spiral seed-metering wheel group is taken out for changing, thereby adapting to the seeding requirement of multiple crops, having simple operation and saving manpower; and the baffle is arranged between the adjacent seed metering wheels in the spiral seed metering wheel group, the seeds are not easy to flow axially after filling the groove, the seed metering effect is improved, the seeds are prevented from being concentrated, and the seed metering uniformity is improved;
(2) the seed cleaning plate of one or more embodiments of the utility model is closely attached to the outer edge of the spiral seed-metering wheel set, thereby reducing the discharge of the seeds on the driving layer of the spiral seed-metering wheel set and ensuring more accurate metering of seed-metering quantity; the seed sowing wheel protecting cover and the seed cleaning plate divide the shell into a front cavity and a rear cavity, and seeds are uniformly brought into the rear cavity from the front cavity after being stirred by the stirring shaft group, so that the blockage of the seed sowing device is avoided, and the uniform mixing with the air flow is facilitated;
(3) the venturi air pipe of one or more embodiments of the utility model comprises an air pipe and a valve, wherein the bottom of the air pipe is provided with a rectangular opening, the valve is fixed at the bottom of the air pipe through a pin shaft and a tension spring, when the seeding device is blocked or the operation is completed, the valve is opened to discharge the residual seeds, the operation is simple, and the labor is saved;
(4) the utility model discloses a drive through the motor and discharge as required during one or more embodiment seed metering operation, guaranteed accurate seed metering volume.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic view of a seed metering device according to one or more embodiments of the present invention;
FIG. 2 is an isometric view of a seed meter according to one or more embodiments of the present invention;
FIG. 3 is a side view of a seed meter according to one or more embodiments of the present invention;
FIG. 4 is a schematic structural view of a helical seeding wheel set according to one or more embodiments of the present invention;
fig. 5(a) is a front view of a stirring shaft assembly according to one or more embodiments of the present invention;
fig. 5(b) is a side view of a stirring shaft assembly according to one or more embodiments of the present invention;
FIG. 6 is a schematic illustration of a venturi duct according to one or more embodiments of the present disclosure;
fig. 7 is a schematic illustration of an end cap construction according to one or more embodiments of the present disclosure;
FIG. 8 is a schematic view of a seeding wheel shaft configuration according to one or more embodiments of the present invention;
the seed metering device comprises a seed box 1, a seed metering device 2, a Venturi tube 3, a shell 201, a spiral seed metering wheel set 202, a stirring shaft set 203, a seed metering driving shaft 204, an end cover 205, a bearing seat 206, a seed metering wheel protecting cover 207, a seed cleaning plate 208, a gear I209, a gear II210, a gear III 211, a gear III 212, a gear IV, a servo motor 213, a seed metering wheel shaft 2021, a seed metering wheel 2022, a baffle I2023, a baffle II 2024, a baffle II 2031, a stirring shaft main body, a stirring rod 2032, an air tube 301, and a valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" when appearing in this application are intended only to designate directions that are consistent with the up, down, left and right directions of the drawings themselves, and not to limit the structure, but merely to facilitate description of the invention and to simplify description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two elements may be connected directly or indirectly through an intermediate medium, or the two elements may be connected internally or in an interaction relationship, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.
The first embodiment is as follows:
the embodiment provides an electrically-driven multi-crop venturi seed metering device, as shown in fig. 1, comprising a seed metering device 2, a seed box 1 and a venturi air pipe 3, wherein the seed box 1 is installed above the seed metering device 2, and the venturi air pipe 3 is installed below the seed metering device 2. The venturi air pipe 3 can realize negative pressure seed suction, and seeds falling down in the seed sowing device 2 are mixed with high-speed airflow generated by the fan through the venturi air pipe 3 to form uniform and ordered seed flow to enter the next stage for distribution.
Specifically, as shown in fig. 2 and 3, the seed sowing device 2 includes a housing 201, a spiral seed sowing wheel set 202, a stirring shaft set 203, and a driving device, wherein the spiral seed sowing wheel set 202 and the stirring shaft set 203 are installed inside the housing 201, and the driving device is installed outside the housing 201 and connected with the spiral seed sowing wheel set 202 and the stirring shaft set 203.
The housing 201 has a cavity therein, and has an open structure at the top and bottom thereof. The spiral seed-metering wheel group 202 is horizontally arranged in the shell 201, a seed-metering wheel protecting cover 207 is arranged above the spiral seed-metering wheel group 202, the seed-metering wheel protecting cover 207 is welded and fixed with the two sides of the shell 201, and the seed-metering wheel protecting cover 207 and the spiral seed-metering wheel group 202 are concentrically arranged. A seed cleaning plate 208 is arranged below the spiral seed sowing wheel set 202, and the seed sowing wheel protective cover 207 and the seed cleaning plate 208 divide the shell 201 into a front cavity and a rear cavity. Wherein, the front cavity is positioned at one side of the spiral seeding wheel set 202, and the rear cavity is positioned at the other side of the spiral seeding wheel set 202; the stirring shaft set 203 is arranged in the front cavity. The seeds are uniformly carried from the front cavity to the rear cavity after being stirred by the stirring shaft group 203, so that the blockage of the seed sowing device is avoided, and the uniform mixing with the wind flow is facilitated.
As shown in fig. 3, the seed cleaning plate 208 is made of a flexible material, one end of the seed cleaning plate 208 is fixed with the bottom opening of the housing 201, the end surface of the other end of the seed cleaning plate 208 is higher than the lower end surface of the spiral seeding wheel set 202 and is tightly attached to the outer edge of the spiral seeding wheel set 202, the discharge of the seeds in the layer driven by the spiral seeding wheel set 202 is reduced through the seed cleaning plate 208, and the metering amount is more accurate. In this embodiment, the seed cleaning plate 208 is made of rubber.
The spiral seeding wheel set 202 is arranged on a seeding driving shaft 204, the seeding driving shaft 204 is connected with the shell 201 through a bearing seat 206, the bearing seat 206 is welded on the outer side of an end cover 205, and the end covers 205 are symmetrically arranged on two sides of the shell 201; the other end of the seeding driving shaft 204 is connected with a driving device. The stirring shaft set 203 is connected with the housing 201 through a bearing seat, and one end of the stirring shaft set 203 is connected with a driving device. In this embodiment, the seeding driving shaft 204 has a circular cross section at both ends and a square cross section at the middle.
As shown in FIG. 7, the end cap 205 has openings at both ends, and the openings at both ends are in opposite directions. The securing of the end cap 205 to the housing 201 is accomplished by threading bolts (e.g., ram bolts) into the olecranon openings. When the seed wheel 2022 is replaced, the bolts on the end cover 205 are loosened, the end cover 205 is rotated anticlockwise, the spiral seed wheel group 202 is drawn out together with the bearing seat 206, the spiral seed wheel group is taken out from the seed driving shaft 204, the new seed wheel 2022 is replaced, and the seed wheel 2022 is installed back in sequence at one time, so that the replacement of the seed wheel 2022 is completed, and the multi-crop seeding is adapted.
Further, as shown in fig. 1, the driving device includes a servo motor 213, a speed reducer, a gear iii 211, a gear II210, a gear i 209, and a gear iv 212, wherein the gear II210 is a reversing idle gear; the servo motor 213 is connected to the servo motor driver through a wire. The servo motor 213 is connected with a gear III 211 through a speed reducer, and the gear III 211 is meshed with a gear IV 212 and a gear I209 through a gear II 210. Wherein, the speed reducer is a multistage speed reducer.
The gear I209 is fixedly connected with the seed sowing driving shaft 204, and the gear IV 212 is fixedly connected with the stirring shaft group 203. Under the driving action of the servo motor 213, the spiral seeding wheel set 202 and the stirring shaft set 203 rotate in the same direction according to a set proportion, so that seeds can be stirred, the friction force is reduced, and the seed fluidity is increased. In this embodiment, the stirring shaft set 203 and the spiral seeding wheel set 202 rotate in the same direction at a speed reduction of 0.6 transmission ratio, and disturb the seeds in the seed storage area to reduce resistance and prevent blockage. It is understood that in other embodiments, the transmission ratio between the stirring shaft set 203 and the spiral seeding wheel set 202 can be other values, and can be selected according to the actual seeding requirement.
As shown in fig. 4, the spiral seed-metering wheel group 202 includes a seed-metering wheel shaft 2021, a seed-metering wheel 2022, a partition plate i 2023, and a partition plate ii 2024, wherein the plurality of seed-metering wheels 2022 are installed along the axial direction of the seed-metering wheel shaft 2021, and the gear teeth of the plurality of seed-metering wheels 2022 are distributed along the axial direction of the seed-metering wheel shaft 2021 in a staggered manner to form a spiral step shape. In this embodiment, the radial angle between the gear teeth of any one of the seed wheels 2022 and the gear teeth of the adjacent seed wheel 2022 is 10 °.
In order to avoid the seed wheel 2022 from sliding along the circumferential direction of the seed wheel shaft 2021, the cross section of the seed wheel shaft 2021 is polygonal. In this embodiment, the body of the seed shaft 2021 is hexagonal prism shaped, as shown in fig. 8, and both ends of the seed shaft 2021 are cylindrical. The center of the seed shaft 2021 is provided with a central hole, which is a square hole in this embodiment. The seed shaft 2021 is connected to the seed driving shaft 204 through a central hole.
The adjacent seed sowing wheels 2022 are separated by a partition plate I2023, and partition plates II 2024 are arranged at the outer sides of the two seed sowing wheels 2022 at the end parts. The seeds are not easy to flow axially after filling the grooves formed between the teeth of the seed sowing wheel 2022, the seed sowing effect is improved, the seed concentration is avoided, and the seed sowing uniformity is improved. The baffle I2023 is installed on the main body of the seeding wheel shaft 2021, the outer edge of the baffle I is circular, and the inner edge of the baffle I is matched with the main body of the seeding wheel shaft 2021 in shape, namely, the baffle I is hexagonal. The baffle II 2024 is arranged at the end part of the seeding wheel shaft 2021, and the inner edge and the outer edge of the baffle II are both round.
As shown in fig. 5(a) and 5(b), the stirring shaft set 203 is installed obliquely above the spiral seeding wheel set 202, and includes a stirring shaft main body 2031 and a plurality of stirring rods 2032, the stirring rods 2032 are fixed obliquely at intervals along the axial direction of the stirring shaft main body 2031, and the stirring area is increased by the obliquely arranged stirring rods 2032. The central position of the stirring rod 2032 is fixed to the stirring shaft main body 2031, the included angle between each stirring rod 2032 and the stirring shaft main body 2031 is the same, and a set included angle is formed between the axes of the adjacent stirring rods 2032. In this embodiment, the included angle between each of the stirring rods 2032 and the stirring shaft body 2031 is 60 °, and the included angle between each of the stirring rods 2032 and the two adjacent stirring rods 2032 in the radial direction is 60 ° and 30 °, respectively.
As shown in FIG. 6, the Venturi tube 3 comprises an air tube 301 and a valve 302, the top of the air tube 301 is provided with a feeding port, the top of the feeding port is connected with the bottom of the casing 201 of the seed sowing device 2, and the bottom of the feeding port is connected with the air tube 301. And one end of the connecting position of the feeding port and the air pipe 301 is lower than the other end, namely point A is slightly lower than point B. The cross-sections of the two ends of the air duct 301 are circular, the middle cross-section is rectangular, and the outlet end is longer than the inlet end. The bottom of the air pipe 301 is provided with a rectangular opening, one end of the valve 302 is connected below the rectangular opening through a pin shaft, and two sides of the valve 302 are connected with the air pipe 301 through tension springs. When the seeding apparatus is blocked or the operation is finished, the valve 302 is opened to discharge the residual seeds, the operation is simple, and the labor is saved.
The working principle of the embodiment is as follows:
1) seed filling: the feeding port is kept in a negative pressure state by external positive pressure airflow passing through the straight pipe of the Venturi tube 3. Seeds are placed into a seed box 1, and the seeds fall into a seed sowing device 2 from the seed box 1; when the seeds are filled in the front cavity seed storage area, the servo motor 213 rotates to reduce the speed and increase the torque through the multi-stage speed reducer, and the spiral seeding wheel set 202 is driven to overcome the resistance of the seeds to stably rotate through gear engagement.
2) Seed cleaning: after the spiral seeding wheel set 202 is filled with seeds, the spiral seeding wheel set 202 rotates to the bottom, the seed cleaning plate 208 is tightly attached to the outer edge of the spiral seeding wheel set 202 to prevent the seeds on the driving layer from being discharged, the stirring shaft set 203 and the spiral seeding wheel set 202 rotate in the same direction at a speed reduction ratio of 0.6, the seeds in the seed storage area are disturbed to reduce the resistance, and the blockage is prevented.
3) Seed feeding: the seeds are brought to the rear cavity of the shell by the spiral seeding wheel set 202, fall into the venturi air pipe 3 under the action of self gravity and negative pressure to be mixed with high-speed airflow generated by the fan, and form uniform and ordered seed flow to enter the next stage for distribution.
4) After the seeding is finished, the valve 302 at the bottom of the Venturi air pipe 3 is opened to clear out the redundant seeds.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An electrically-driven multi-crop Venturi seed sowing device is characterized by comprising a seed box, a seed sowing device and a Venturi air pipe, wherein the seed box is arranged above the seed sowing device, and the Venturi air pipe is arranged below the seed sowing device;
the seed metering device comprises a shell, and a spiral seed metering wheel set and a stirring shaft set which are arranged in the shell, wherein the spiral seed metering wheel set and the stirring shaft set are connected with a driving device; the venturi air pipe comprises an air pipe and a valve, a rectangular opening is formed in the bottom of the air pipe, and the valve is fixed to the bottom of the venturi air pipe through a pin shaft and a tension spring.
2. The electrically-driven multi-crop venturi seeding device according to claim 1, wherein a seed cleaning plate is mounted at the bottom of the housing, the seed cleaning plate is closely attached to the outer edge of the spiral seeding wheel set, and the upper end surface of the seed cleaning plate is higher than the lower end surface of the spiral seeding wheel set; the casing internally mounted has seed metering wheel protecting cover, and seed metering wheel protecting cover is located spiral seed metering wheelset top and divide into front chamber and back chamber with the clear seed board with the casing.
3. The electrically-driven multi-crop Venturi seeding device according to claim 1 or 2, characterized in that the spiral seeding wheel group comprises a seeding wheel shaft and a plurality of seeding wheels axially mounted along the seeding wheel shaft, the seeding wheels are provided with central holes, and adjacent seeding wheels are positioned differently from the wheel teeth through the central holes to realize the staggering of the wheel teeth and are spirally distributed; the included angle between the gear teeth of the adjacent seed sowing wheels is 10-15 degrees.
4. The electrically-driven multi-crop venturi seed metering device of claim 3, wherein the cross-section of both ends of the seed shaft is circular, and the cross-section of the middle section of the seed shaft is hexagonal; a partition plate I is arranged between adjacent seed metering wheels, partition plates II are arranged at two ends of each partition plate I, the center hole of each partition plate I is hexagonal, and the center hole of each partition plate II is circular.
5. The electrically-driven multi-crop Venturi seed sowing device according to claim 3, characterized in that a square hole is formed in the seed sowing wheel shaft along the axial direction, and the seed sowing wheel shaft is connected with a seed sowing driving shaft through the square hole; the seed sowing driving shaft is connected with the driving device.
6. The electrically driven multiple crop venturi seed metering device of claim 5, wherein the seed drive shaft is connected to a bearing housing through a bearing, the bearing housing being fixed to the end cap; the end covers are symmetrically arranged on two sides of the shell, eagle beak type openings are formed in the edges of the end covers, and the directions of the openings at two ends of the end covers are opposite.
7. The electrically-driven multi-crop venturi seed metering device according to claim 1, wherein the stirring shaft group comprises a stirring shaft main body and a plurality of stirring rods which are obliquely fixed along the axial direction of the stirring shaft main body at intervals, the included angle between each stirring rod and the stirring shaft main body is 60 degrees, and the radial included angle between any stirring rod and two adjacent stirring rods is 60 degrees and 30 degrees respectively.
8. The electrically-driven multi-crop venturi seeding device according to claim 1, wherein the driving device comprises a servo motor, a speed reducer and a gear set, the servo motor is connected with the spiral seeding wheel set and the stirring shaft set through the speed reducer and the gear set, so that the spiral seeding wheel set and the stirring shaft set can rotate according to a speed ratio of 5: a gear ratio of 3.
9. The electrically driven multiple crop venturi seed metering device of claim 8, wherein said gear set comprises gear i, gear II, gear iii, gear iv, said gear iii is engaged with gear iv, gear i through gear II; the gear I is connected with the spiral seed sowing wheel set, and the gear IV is connected with the stirring shaft set.
10. The electrically driven multiple crop venturi seed metering device of claim 1, wherein a feed inlet is provided at the top of the air duct, one end of the feed inlet at the connection position with the air duct being lower than the other end; the sections of the two ends of the air pipe are circular, and the section of the middle of the air pipe is rectangular; and the outlet end of the air pipe is longer than the inlet end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021209210.9U CN212851750U (en) | 2020-06-24 | 2020-06-24 | Electric drive type multi-crop Venturi seed metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021209210.9U CN212851750U (en) | 2020-06-24 | 2020-06-24 | Electric drive type multi-crop Venturi seed metering device |
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| CN212851750U true CN212851750U (en) | 2021-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375653A (en) * | 2022-01-18 | 2022-04-22 | 江西省农业技术推广中心 | Centralized type segmented modular seed metering wheel structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375653A (en) * | 2022-01-18 | 2022-04-22 | 江西省农业技术推广中心 | Centralized type segmented modular seed metering wheel structure |
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