CN215648165U - Air-suction type seeder, seed metering device and seed suction mechanism - Google Patents
Air-suction type seeder, seed metering device and seed suction mechanism Download PDFInfo
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- CN215648165U CN215648165U CN202122134310.0U CN202122134310U CN215648165U CN 215648165 U CN215648165 U CN 215648165U CN 202122134310 U CN202122134310 U CN 202122134310U CN 215648165 U CN215648165 U CN 215648165U
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Abstract
The utility model discloses a seed suction mechanism, which is characterized in that a blocking component for blocking communication between an adsorption hole and a negative pressure adsorption cavity is arranged in the negative pressure adsorption cavity, the adsorption force generated by negative pressure adsorption is integrally and uniformly applied to a seed discharging disc, and the contact acting force between the seed discharging disc and the blocking component is uniform, so that the defects that the seed discharging disc and a sealing strip of the seed suction mechanism are easily abraded, the service life is short and the maintenance cost is high due to large friction force between the seed discharging disc and the sealing strip caused by local negative pressure in the prior art are overcome; in addition, the negative pressure of the utility model can not generate a force deviating from the rotation axis of the seed plate on the seed plate, so that the seed plate and the negative pressure suction cup can rotate on the rotation base stably, and the utility model has the advantages of long service life and low maintenance cost; the utility model also discloses a seed sowing device and an air-suction type seeder, and the seed sowing device has the advantages of long service life and low maintenance cost.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, in particular to an air-suction type seeder, a seed metering device and a seed suction mechanism.
Background
The seed metering device is a core component of the seeding machine, and the structural form and the function of the seed metering device directly influence the operation efficiency and the service life of the seeding machine. The function of the seeding apparatus is to convert seeds from a group into individuals, and form a uniform seed flow or continuous single seeds.
The air-suction seeding apparatus is a seeding apparatus which is applied more in the current market and is used in high-speed and precision seeding machines. The working principle is as follows: negative pressure is generated in a partial area (with a negative pressure cavity) on one side of the seed metering disc, so that seeds on the other side are adsorbed on the seed metering disc and rotate along with the seed metering disc, the seeds are adsorbed on the seed metering disc in the area with the negative pressure cavity, and the seeds are not adsorbed on the seed metering disc in the area without the negative pressure cavity. In the rotation process of the seeds along with the seed metering disc, the seeds are adsorbed and rotated in the area with the negative pressure cavity, and the seeds naturally fall in the area without the negative pressure cavity, so that the seed metering function of the seed metering device is realized.
However, in the seed sowing device, the sealing strip of the negative pressure cavity is tightly attached to the seed sowing disc under the action of negative pressure, and when the seed sowing device works, the sealing strip is not moved, the seed sowing disc rotates, and the friction force between the sealing strip and the seed sowing disc is large. Along with long-time work, under the action of friction force, the sealing strips and the seeding plate can be abraded to a large extent and even become invalid. The sealing strips and the seed metering disc of the seed metering device need to be replaced once after the seed metering device works for 2-3 working cycles, the service life is short, and the maintenance cost is high.
In addition, the negative pressure of the seed sowing device only absorbs a part of the seed sowing disk, namely, the negative pressure generates a force on the seed sowing disk deviating from the rotation axis of the seed sowing disk, so that the seed sowing disk is not stably operated, the seed sowing disk and the central shaft are easily abraded, and the service life is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the technical problems of short service life and high maintenance cost of a seed sowing device of a sowing machine in the prior art, and provides an air-suction type sowing machine, a seed sowing device and a seed suction mechanism.
Based on this, the utility model provides a seed suction mechanism, which comprises:
rotating the base;
the negative pressure sucker is rotationally connected to the rotating base;
the seed discharging plate is connected to the negative pressure sucking disc and used for sucking seeds, and a negative pressure sucking cavity is formed between the negative pressure sucking disc and the seed discharging plate;
the adsorption hole is arranged on the seed sowing plate and is communicated with the negative pressure adsorption cavity;
and the blocking assembly is arranged in the negative pressure adsorption cavity and is used for blocking the adsorption hole to be communicated with the negative pressure adsorption cavity.
According to the seed suction mechanism, the negative pressure sucker rotates and is connected to the rotating base in a sealing mode, the seed discharging plate is connected to the negative pressure sucker in a sealing mode, a plurality of adsorption holes are formed in the seed discharging plate, and the adsorption holes are formed in the seed discharging plate along the circumferential direction.
The seed suction mechanism comprises a blocking seat and a sealing block, wherein the blocking seat is connected to a rotary base, the sealing block is fixedly connected to the blocking seat, the sealing block is in sealing and sliding contact with a seed metering disc, and the sealing block is opposite to an adsorption hole to block the adsorption hole to be communicated with a negative pressure adsorption cavity.
According to the seed suction mechanism, the rotary base is connected with the rotor in a rotating mode, the negative pressure sucker is connected to the rotor in a sealing mode, and a rotary shaft sleeve, a check ring used for positioning the rotary shaft sleeve and an oil seal used for sealing the rotor and the rotary base are arranged between the rotor and the rotary base.
According to the seed suction mechanism, the rotary base is internally provided with the air guide channel communicated with the negative pressure adsorption cavity.
In the seed suction mechanism, the sealing block is a felt arranged on the blocking seat.
The utility model also provides a seed sowing device, which comprises: the seed suction mechanism comprises a first shell, a second shell and the seed suction mechanism, a working cavity is arranged between the first shell and the second shell, the seed suction mechanism is arranged in the working cavity, and a driving assembly used for driving a negative pressure suction cup and a seed discharging disc to rotate so that seeds adsorbed on the seed discharging disc rotate along with the seed discharging disc is arranged on the first shell or the second shell.
According to the seed metering device, the second shell is internally provided with the seed storage cavity and the seed metering channel which are communicated with each other, and the lower end of the seed metering channel is provided with the seed metering opening; the blocking component is opposite to the seed discharging channel, when the seeds move to the seed discharging channel from the seed storage cavity along with the seed discharging disc, the seeds lose the acting force absorbed by the negative pressure under the blocking effect of the blocking component, and the seeds fall into the seed discharging channel from the seed discharging disc.
The seed metering device is characterized in that the second shell is provided with a seed cleaning mechanism for removing redundant seeds on the seed metering disc, the seed cleaning mechanism comprises an inner seed cleaning block and an outer seed cleaning block, the inner seed cleaning block and the outer seed cleaning block are arranged oppositely, the inner seed cleaning block is fixedly connected in the second shell, one end of the outer seed cleaning block is pivoted on the second shell, and the second shell is provided with an adjusting mechanism for adjusting the distance between the outer seed cleaning block and the inner seed cleaning block.
The seed sowing device comprises a seed sowing device body, wherein the seed sowing device body is provided with an adjusting mechanism and a seed cleaning block, the adjusting mechanism comprises an adjusting shaft, a stirring block and an adjusting block, the adjusting shaft is pivoted on a second shell, one end of the stirring block is connected to one end of the adjusting shaft, the other end of the stirring block is provided with a stirring pin, the outer seed cleaning block is provided with a sliding groove, the stirring pin is located in the sliding groove, one end of the adjusting block is connected to the adjusting shaft, the other end of the adjusting block is provided with a plug part, and the second shell is provided with a plurality of jacks for the plug part to be inserted into.
According to the seed metering device, the second shell is provided with the seed metering box, and the seed metering box is communicated with the seed storage cavity.
According to the seed sowing device, the seed cleaning port is arranged on the second shell and positioned at the lower part of the seed storage cavity, and the seed cleaning baffle for opening and closing the seed cleaning port is arranged on the second shell.
In the seed sowing device, the second casing is provided with a seed falling sensor for detecting the falling of seeds from the seed sowing port, and the seed falling sensor is positioned at the side of the seed sowing port.
The utility model also provides an air-suction seeder, which comprises the seed metering device.
The embodiment of the utility model has the following beneficial effects:
1. according to the seed suction mechanism provided by the embodiment of the utility model, the blocking assembly for blocking the communication between the adsorption holes and the negative pressure adsorption cavity is arranged in the negative pressure adsorption cavity, the adsorption force generated by negative pressure adsorption is uniformly applied to the seed discharging disc as a whole, and the contact acting force between the seed discharging disc and the blocking assembly is uniform, so that the defects that the seed discharging disc and the sealing strip of the seed suction mechanism are easy to wear, short in service life and high in maintenance cost due to large friction force between the seed discharging disc and the sealing strip caused by local negative pressure in the prior art are overcome; in addition, the negative pressure in the embodiment can not generate a force deviating from the rotation shaft of the seed plate on the seed plate, so that the seed plate and the negative pressure sucker can stably rotate on the rotation base, and the seed plate has the advantages of long service life and low maintenance cost.
2. According to the seed sowing device provided by the embodiment of the utility model, the seed suction mechanism in the embodiment of the utility model is arranged in the working cavity between the first shell and the second shell, and the negative pressure suction disc and the seed sowing disc of the seed suction mechanism are driven to rotate in the working cavity through the driving assembly, so that automatic seed sowing is realized, and the seed sowing device has the advantages of long service life and low maintenance cost.
3. The air-suction seeder provided by the embodiment of the utility model adopts the seed sowing device provided by the embodiment of the utility model, and has the advantages of long service life and low maintenance cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a perspective view of a seed metering device according to a preferred embodiment of the present invention.
FIG. 2 is one of the exploded views of the seed meter of the preferred embodiment of the present invention.
FIG. 3 is a second exploded view of the seed meter of the preferred embodiment of the present invention.
FIG. 4 is a schematic view in full section of a seed meter of a preferred embodiment of the present invention.
FIG. 5 is a schematic view of the seed meter hiding the first housing and the seed suction mechanism according to the preferred embodiment of the utility model.
Fig. 6 is an enlarged view of a portion C marked in fig. 5.
FIG. 7 is one of the schematic perspective cross-sectional views of a seed meter of the preferred embodiment of the utility model.
FIG. 8 is a second schematic cross-sectional perspective view of a seed meter in accordance with a preferred embodiment of the present invention.
Fig. 9 is an enlarged view of a portion a marked in fig. 8.
Fig. 10 is an enlarged view of a portion B marked in fig. 8.
FIG. 11 is a schematic elevational view of an adjustment mechanism in the seed meter of the preferred embodiment of the utility model.
Fig. 12 is a schematic perspective sectional view of a seed suction mechanism according to a preferred embodiment of the present invention.
Fig. 13 is an exploded view of the seed suction mechanism of the preferred embodiment of the present invention.
FIG. 14 is a schematic view of the seed suction mechanism of the preferred embodiment of the present invention releasing the seed.
Reference numerals: 1000-seeds, 1-a first shell, 2-a second shell, 3-a seed sucking mechanism, 30-a rotating base, 31-a negative pressure sucking disc and 311-a negative pressure sucking cavity; 32-seed sowing plate, 321-adsorption hole, 33-barrier component, 331-barrier seat, 332-sealing block, 35-rotor, 36-rotary shaft sleeve, 37-retainer ring, 38-oil seal, 301-air guide channel, 34-driving component, 201-seed storage cavity, 202-seed sowing channel, 23-seed cleaning mechanism, 231-inner seed cleaning block, 232-outer seed cleaning block, 233-adjusting mechanism, 2331-adjusting shaft, 2332-toggle block, 2333-adjusting block, 23321-toggle pin, 2321-sliding groove, 23331-plug part, 24-insertion hole, 6-seed box, 2011-seed cleaning port, 2021-seed sowing port, 21-seed cleaning baffle and 22-seed falling sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For ease of understanding, the present embodiment is described in detail in terms of a seed suction mechanism, a seed meter, and a planter.
Seed sucking mechanism
As shown in fig. 12 to 14, a seed suction mechanism according to an embodiment of the present invention, the seed suction mechanism 3 includes: the seed sowing device comprises a rotary base 30, a negative pressure suction cup 31, a seed sowing plate 32, a negative pressure suction cavity 311, a suction hole 321 and a blocking component 33, wherein the negative pressure suction cup 31 is rotationally connected to the rotary base 30; the seed discharging plate 32 is connected to the negative pressure suction cup 31 and is used for adsorbing seeds 1000, and a negative pressure adsorption cavity 311 is formed between the negative pressure suction cup 31 and the seed discharging plate 32; the adsorption hole 321 is arranged on the seed discharging disc 32 and communicated with the negative pressure adsorption cavity 311; the blocking component 33 is arranged in the negative pressure adsorption cavity 311 and is used for blocking the adsorption hole 321 to be communicated with the negative pressure adsorption cavity 311. The seed suction mechanism of the embodiment arranges the blocking component for blocking the communication between the adsorption holes and the negative pressure adsorption cavity in the negative pressure adsorption cavity, the adsorption force generated by the negative pressure adsorption is uniformly applied on the seed discharging disc as a whole, and the contact acting force of the seed discharging disc and the blocking component is uniform, so that the defects that the seed discharging disc and the sealing strip of the seed suction mechanism are easy to wear, short in service life and high in maintenance cost due to large friction force between the seed discharging disc and the sealing strip caused by local negative pressure in the prior art are overcome; in addition, the negative pressure in the embodiment can not generate a force deviating from the rotation shaft of the seed plate on the seed plate, so that the seed plate and the negative pressure sucker can stably rotate on the rotation base, and the seed plate has the advantages of long service life and low maintenance cost.
Now, the operation principle of the adsorption mechanism of the present embodiment for adsorbing and releasing seeds will be briefly described with reference to the accompanying drawings:
taking one of the adsorption holes on the seed plate as an example (see fig. 14), when the adsorption hole on the seed plate is located at a position without the blocking component 33, the adsorption hole 321 can adsorb seeds on the seed plate under the action of the negative pressure adsorption force of the negative pressure adsorption cavity, and with the rotation of the seed plate 32, when the adsorption hole 321 on the seed plate rotates to the position of the blocking component 33, the blocking component 33 blocks the conduction state between the adsorption hole and the negative pressure adsorption cavity, so that the adsorption hole 321 at the position loses the adsorption force on the seeds 1000, and the seeds fall from the seed plate under the action of gravity.
In this embodiment, the negative pressure suction cup 31 is rotated and hermetically connected to the rotating base 30, and the seed discharging plate 32 is hermetically connected to the negative pressure suction cup 31 (see fig. 12); a plurality of adsorption holes 321 are arranged on the seed plate 32, and the adsorption holes 321 are arranged on the seed plate 32 along the circumferential direction (see fig. 13 and 14); by adopting the design, the device has the advantages of simple structure and simple assembly.
In this embodiment, the blocking assembly 33 includes a blocking seat 331 and a sealing block 332, the blocking seat 331 is fixedly connected to the rotating base 30 (see fig. 12), the sealing block 332 is connected to the blocking seat 331, the sealing block 332 is in sealing and sliding contact with the seed discharging plate 32, and the sealing block 332 faces the suction hole 321 to cut off the suction hole 321 and the negative pressure suction cavity 311 (see fig. 13 and 14).
Optionally, the sealing block 332 is a felt arranged on the partition seat 331, and the sealing block 332 made of the felt has the advantages of good wear resistance and long service life.
In order to make the negative pressure suction cup 31 smoothly rotate on the rotating base 30, a rotor 35 is rotatably connected on the rotating base 30, the negative pressure suction cup 31 is hermetically connected on the rotor 35, a rotating shaft sleeve 36, a retaining ring 37 for positioning the rotating shaft sleeve 36 and an oil seal 38 (see fig. 12) for sealing the rotor 35 and the rotating base 30 are arranged between the rotor 35 and the rotating base 30.
As shown in fig. 1 to 12, in the present embodiment, in order to facilitate assembly, an air guide passage 301 communicating with a negative pressure adsorption chamber 311 is provided in the spin base 30; the rotary base 30 is hermetically connected with a joint 5 connected with a negative pressure source, and the joint 5 is connected with the air guide channel 301.
(II) seeding apparatus
The seed metering device of the embodiment adopts the seed suction mechanism of the embodiment.
As shown in fig. 1 to 14, a seed sowing device of an embodiment of the present invention includes: first casing 1, second casing 2 and the seed suction mechanism 3 in this embodiment, first casing 1 and second casing 2 between be equipped with working chamber 101, seed suction mechanism 3 set up in working chamber 101, first casing 1 or second casing 2 on be equipped with and be used for driving negative pressure suction cup 31 and seed metering dish 32 and rotate so that the seed 1000 that adsorbs on seed metering dish 32 along with seed metering dish 32 pivoted drive assembly 34. According to the seed sowing device provided by the embodiment of the utility model, the seed suction mechanism is arranged in the working cavity between the first shell and the second shell, and the negative pressure suction cup and the seed sowing plate of the seed suction mechanism are driven by the driving assembly to rotate in the working cavity, so that automatic seed sowing is realized, and the seed sowing device has the advantages of long service life and low maintenance cost.
More specifically, the seed metering device of the embodiment comprises: the seed sucking device comprises a first shell 1, a second shell 2 and a seed sucking mechanism 3, wherein a working cavity 101 is arranged between the first shell 1 and the second shell 2; the seed suction mechanism 3 is arranged in the working chamber 101, a driving assembly 34 for driving the negative pressure suction cup 31 and the seed discharging disk 32 to rotate so as to enable the seeds 1000 adsorbed on the seed discharging disk 32 to rotate along with the seed discharging disk 32 is arranged on the first shell 1 or the second shell 2, and the driving assembly 34 is a motor arranged on the second shell 2 in the embodiment; the seed suction mechanism 3 comprises a rotary base 30, a negative pressure suction cup 31 and a seed discharging disc 32, the rotary base 30 is connected to the first shell 1, the negative pressure suction cup 31 rotates and is hermetically connected to the rotary base 30, so that the negative pressure suction cup 31 and the seed discharging disc 32 can rotate in the working cavity 101, the seed discharging disc 32 is hermetically connected with the negative pressure suction cup 31, a negative pressure suction cavity 311 is arranged between the seed discharging disc 32 and the negative pressure suction cup 31, a plurality of suction holes 321 communicated with the negative pressure suction cavity 311 are arranged on the seed discharging disc 32, the suction holes 321 are circumferentially arranged on the seed discharging disc 32 for sucking seeds 1000, a blocking component 33 for closing the suction holes 321 and further enabling the seeds 1000 sucked on the seed discharging disc 32 to freely fall from the seed discharging disc 32 is arranged on the rotary base 30, and the blocking component 33 is positioned in the negative pressure suction cavity 311; the second shell 2 is internally provided with a seed storage cavity 201 and a seed discharging channel 202 in sequence along the movement direction of seeds 1000, the seed storage cavity 201 is communicated with the seed discharging channel 202, the lower end of the seed discharging channel 202 is provided with a seed discharging port 2021, the blocking component 33 is over against the seed discharging channel 202, when the seeds 1000 move to the seed discharging channel 202 from the seed storage cavity 201 along with the seed discharging disk 32, under the blocking action of the blocking component 33, the seeds 1000 lose the acting force absorbed by negative pressure, and the seeds 1000 fall into the seed discharging channel 202 from the seed discharging disk 32.
In order to achieve precise seed metering, one suction hole 321 in the seed metering disc is required to suck only one seed 1000, however in reality, the adsorption holes 321 may adsorb two or more seeds 1000, and in order to remove the excess seeds 1000 adsorbed by the adsorption holes 321, the second housing 2 is provided with a seed cleaning mechanism 23 for removing the excess seeds 1000 adsorbed by the adsorption holes 321, the seed cleaning mechanism 23 comprises an inner seed cleaning block 231 and an outer seed cleaning block 232, the inner seed cleaning block 231 and the outer seed cleaning block 232 are arranged oppositely, the inner seed cleaning block 231 is fixedly connected in the second shell 2, one end of the outer seed cleaning block 232 is pivoted on the second shell 2, a first convex tooth 2311 protruding outwards is arranged on the inner seed cleaning block 231, a second convex tooth 2322 protruding outwards is arranged on the outer seed cleaning block 232, the seed cleaning mechanism is a technology common in the prior art, and the working principle of the seed cleaning mechanism is not described in detail in the embodiment; the second shell 2 is provided with an adjusting mechanism 233 for adjusting the position of the outer seed cleaning block 232 relative to the second shell 2; the adjusting mechanism 233 comprises an adjusting shaft 2331, a toggle block 2332 and an adjusting block 2333, the adjusting shaft 2331 is pivoted on the second casing 2, one end of the toggle block 2332 is connected to one end of the adjusting shaft 2331, the other end of the toggle block 2332 is provided with a toggle pin 23321, the outer seed cleaning block 232 is provided with a sliding groove 2321, the toggle pin 23321 is positioned in the sliding groove 2321, one end of the adjusting block 2333 is connected to the adjusting shaft 2331, the other end of the adjusting block 2333 is provided with a plug part 23331, and the second casing 2 is provided with a plurality of jacks 24 for inserting the plug part 23331 therein. In the adjusting mechanism 233 of this embodiment, when in use, the plug portion 23331 is taken out of the insertion hole 24, then the adjusting block is rotated, and after the position of the seeding block 232 is adjusted relative to the second housing 2, the plug portion 23331 is inserted into the insertion hole 24 again (see fig. 8, 9 and 11). The adjusting mechanism is used for adjusting the position of the outer seed cleaning block 232 relative to the second shell 2 to remove the redundant seeds 1000 adsorbed by the adsorption holes 321, so that only one seed 1000 is adsorbed by one adsorption hole 321 on the seeding plate.
A seed box 6 is arranged on the second shell 2, and the seed box 6 is communicated with the seed storage cavity 201.
For some seeds which can not be adsorbed by the adsorption holes on the seed discharging plate and can be left at the lower part of the seed storage cavity, in order to remove the seeds, a seed cleaning port 2011 is arranged at the lower part of the seed storage cavity 201 on the second shell 2, and a seed cleaning baffle 21 for opening and closing the seed cleaning port 2011 is arranged on the second shell 2; the seed cleaning baffle 21 is pivoted on the second housing 2, and the second housing 2 is provided with a locking member 211 for locking the seed cleaning baffle 21 on the second housing 2.
In order to know that the seeds 1000 fall from the seed discharge port 2031, a seed falling sensor 22 for detecting that the seeds 1000 fall from the seed discharge port 2021 is arranged on the second housing 2, and the seed falling sensor 22 is positioned at the side of the seed discharge port 2021; can judge whether the seeding is normal and uniform (as shown in figure 5).
In order to facilitate the observation of the seeding situation, an observation window 25 is arranged on the second shell 2.
In this embodiment, a box cover 61 is provided on the seed box 6, and a seed feeding pipe 62 for guiding seeds 1000 into the seed box 6 is provided on the seed box 6.
(III) air-suction type seeder
The air-suction seeder of the present embodiment employs the seed metering device of the present embodiment. The air-suction seeder comprises the seed metering device of the embodiment and has the advantages of long service life and low maintenance cost.
Because the air-suction seeder is mature equipment in the prior art, the air-suction seeder of the embodiment can be realized only by adaptively replacing the seed sowing device on the basis of the existing air-suction seeder.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The foregoing is directed to the preferred embodiment of the present invention, and it is understood that various changes and modifications may be made by one skilled in the art without departing from the spirit of the utility model, and it is intended that such changes and modifications be considered as within the scope of the utility model.
Claims (13)
1. A seed suction mechanism, characterized in that the seed suction mechanism (3) comprises:
a rotating base (30);
a negative pressure suction cup (31) rotatably connected to the rotary base (30);
the seed discharging disc (32) is connected to the negative pressure suction disc (31) and is used for adsorbing seeds (1000), and a negative pressure adsorption cavity (311) is formed between the negative pressure suction disc (31) and the seed discharging disc (32);
the adsorption hole (321) is arranged on the seed sowing plate (32) and is communicated with the negative pressure adsorption cavity (311);
and the blocking component (33) is arranged in the negative pressure adsorption cavity (311) and is used for blocking the communication between the adsorption hole (321) and the negative pressure adsorption cavity (311).
2. The seed suction mechanism as claimed in claim 1, wherein the negative pressure suction cup (31) is rotatably and hermetically connected to the rotary base (30), the seed discharge plate (32) is hermetically connected to the negative pressure suction cup (31), a plurality of suction holes (321) are formed in the seed discharge plate (32), and the suction holes (321) are circumferentially formed in the seed discharge plate (32).
3. A seed suction mechanism according to claim 1 or 2, wherein the blocking member (33) comprises a blocking seat (331) and a sealing block (332), the blocking seat (331) is fixedly connected to the rotary base (30), the sealing block (332) is connected to the blocking seat (331), the sealing block (332) is in sealing and sliding contact with the seed discharge plate (32), and the sealing block (332) is opposite to the adsorption hole (321) to block the adsorption hole (321) from communicating with the negative pressure adsorption cavity (311).
4. A seed suction mechanism according to claim 1 or 2, characterized in that a rotor (35) is rotatably connected to the rotary base (30), the negative pressure suction cup (31) is hermetically connected to the rotor (35), and a rotary shaft sleeve (36), a retainer ring (37) for positioning the rotary shaft sleeve (36), and an oil seal (38) for sealing the rotor (35) and the rotary base (30) are arranged between the rotor (35) and the rotary base (30).
5. A seed suction mechanism according to claim 1 or 2, characterized in that an air guide channel (301) communicated with the negative pressure suction chamber (311) is arranged in the rotary base (30).
6. A seed suction mechanism according to claim 3, characterized in that the sealing block (332) is felt arranged on the baffle seat (331).
7. A seed meter, comprising: the seed suction mechanism (3) comprises a first shell (1), a second shell (2) and the seed suction mechanism (3) as claimed in any one of claims 1 to 6, wherein a working cavity (101) is arranged between the first shell (1) and the second shell (2), the seed suction mechanism (3) is arranged in the working cavity (101), and a driving assembly (34) for driving the negative pressure suction cup (31) and the seed discharging disc (32) to rotate so that seeds (1000) adsorbed on the seed discharging disc (32) rotate along with the seed discharging disc (32) is arranged on the first shell (1) or the second shell (2).
8. The seed metering device of claim 7, characterized in that a seed storage chamber (201) and a seed metering channel (202) are arranged in the second casing (2), the seed storage chamber (201) and the seed metering channel (202) are communicated with each other, and a seed metering opening (2021) is arranged at the lower end of the seed metering channel (202); the blocking assembly (33) is opposite to the seed discharging channel (202), when the seeds (1000) move to the seed discharging channel (202) from the seed storage cavity (201) along with the seed discharging disc (32), under the blocking effect of the blocking assembly (33), the seeds (1000) lose the acting force absorbed by negative pressure, and the seeds (1000) fall into the seed discharging channel (202) from the seed discharging disc (32).
9. A seed metering device according to claim 7 or 8, characterized in that the second casing (2) is provided with a seed cleaning mechanism (23) for removing the excess seeds (1000) adsorbed by the adsorption holes (321), the seed cleaning mechanism (23) comprises an inner seed cleaning block (231) and an outer seed cleaning block (232), the inner seed cleaning block (231) and the outer seed cleaning block (232) are oppositely arranged, the inner seed cleaning block (231) is fixedly connected in the second casing (2), one end of the outer seed cleaning block (232) is pivoted on the second casing (2), and the second casing (2) is provided with an adjusting mechanism (233) for adjusting the position of the outer seed cleaning block (232) relative to the second casing (2); the adjusting mechanism (233) comprises an adjusting shaft (2331), a poking block (2332) and an adjusting block (2333), the adjusting shaft (2331) is pivoted on the second shell (2), one end of the poking block (2332) is connected to one end of the adjusting shaft (2331), a poking pin (23321) is arranged at the other end of the poking block (2332), a sliding groove (2321) is formed in the outer seed cleaning block (232), the poking pin (23321) is located in the sliding groove (2321), one end of the adjusting block (2333) is connected to the adjusting shaft (2331), a plug portion (23331) is arranged at the other end of the adjusting block (2333), and a plurality of insertion holes (24) for inserting the plug portion (23331) into are formed in the second shell (2).
10. The seed metering device of claim 8, characterized in that a seed metering box (6) is arranged on the second shell (2), and the seed metering box (6) is communicated with the seed storage cavity (201).
11. The seed metering device according to claim 8, characterized in that a seed cleaning port (2011) is arranged on the second casing (2) and at the lower part of the seed storage cavity (201), and a seed cleaning baffle (21) for opening and closing the seed cleaning port (2011) is arranged on the second casing (2).
12. The seed metering device of claim 8, characterized in that the second casing (2) is provided with a seed dropping sensor (22) for detecting the dropping of the seeds (1000) from the seed port (2021), and the seed dropping sensor (22) is positioned at the side of the seed port (2021).
13. An air-seed drill, characterized in that it comprises a seed metering device according to any one of claims 7 to 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122134310.0U CN215648165U (en) | 2021-09-06 | 2021-09-06 | Air-suction type seeder, seed metering device and seed suction mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122134310.0U CN215648165U (en) | 2021-09-06 | 2021-09-06 | Air-suction type seeder, seed metering device and seed suction mechanism |
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| CN215648165U true CN215648165U (en) | 2022-01-28 |
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| CN202122134310.0U Active CN215648165U (en) | 2021-09-06 | 2021-09-06 | Air-suction type seeder, seed metering device and seed suction mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116848977A (en) * | 2022-11-28 | 2023-10-10 | 山东齐力新农业服务有限公司 | Corn and soybean intercropping planting device and planting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116848977A (en) * | 2022-11-28 | 2023-10-10 | 山东齐力新农业服务有限公司 | Corn and soybean intercropping planting device and planting method |
| CN116848977B (en) * | 2022-11-28 | 2023-12-12 | 山东齐力新农业服务有限公司 | Corn and soybean intercropping planting device and planting method |
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