CN110583176B - Variable suction hole double-disc air suction type precise seed metering device - Google Patents
Variable suction hole double-disc air suction type precise seed metering device Download PDFInfo
- Publication number
- CN110583176B CN110583176B CN201910907695.4A CN201910907695A CN110583176B CN 110583176 B CN110583176 B CN 110583176B CN 201910907695 A CN201910907695 A CN 201910907695A CN 110583176 B CN110583176 B CN 110583176B
- Authority
- CN
- China
- Prior art keywords
- seed
- seed metering
- disc
- adjusting plate
- hole
- 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
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 239000012780 transparent material Substances 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 238000009331 sowing Methods 0.000 abstract description 20
- 244000068988 Glycine max Species 0.000 abstract description 6
- 235000010469 Glycine max Nutrition 0.000 abstract description 6
- 240000008042 Zea mays Species 0.000 abstract description 6
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 abstract description 6
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 6
- 235000005822 corn Nutrition 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 208000003643 Callosities Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 240000001931 Ludwigia octovalvis Species 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/18—Machines for depositing quantities of seed at intervals
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The invention discloses a variable suction hole double-disc air suction type precise seed metering device, which comprises a seed delivery pipe, a front panel, a front shell, an air chamber shell, a seed metering disc and an adjusting plate, wherein the seed delivery pipe is arranged on the front panel; the seed delivery pipe is arranged on the front panel, and seeds flow into the seed filling chamber along the seed delivery pipe under the action of gravity; the front panel is arranged on the front shell and is cut by transparent materials, so that the quality of seed filling can be observed conveniently; the front shell is provided with a seed separating plate which separates a seed charging area from a seed charging area, the seed charging area is connected with a seed guiding pipe, and the seed discharging opening is used for cleaning residual seeds; a three-quarter cambered surface negative pressure area is arranged on the air chamber shell; the double-disc mechanism with the adjustable holes comprises a seed metering disc, an adjusting plate and an adjusting rod, wherein holes are uniformly distributed on the seed metering disc and the adjusting plate along the circumference. The invention adopts the superposition combination principle, has simple structure, satisfies the general sowing of soybean and corn, and effectively avoids the influence on the air tightness caused by the repeated disassembly and assembly of the seed sucking parts.
Description
Technical Field
The invention relates to the field of agricultural machinery, in particular to a variable suction hole double-disc air suction type precise seed metering device.
Background
The seed metering device is the heart of the seeder, and the seed metering performance of the seed metering device directly influences the working quality and efficiency of one seeder. Current seed metering devices are largely divided into mechanical and pneumatic types. The pneumatic seed sowing device has strong adaptability to the shapes of seeds of different crops and becomes a main means of precision sowing because of no damage to seeds.
The precision seeding technique requires that the seed sowing device can distribute seeds in the field according to a certain plant spacing, row spacing and hole number according to the planting agronomic requirements of crops. Compared with manual sowing, the seed demand is reduced, the seed purchasing cost is reduced, the crop field distribution structure is optimized, the later management and harvesting are facilitated, and the yield is increased.
The existing pneumatic seed metering device technology is mature, but most of the pneumatic seed metering devices are single in function, and the seed metering disc needs to be replaced by disassembling tools to realize the sowing of various crops; some air suction seed metering devices also realize the sowing of seeds with different particle diameters by controlling the angle of a seed scraping knife through a pointer. The disassembling machine is complex, and the tightness of the pneumatic seed sowing device is easily damaged; the seed metering knife is controlled to adapt to sowing of different seeds, but one of the fundamental factors, namely the hole, affecting the sowing performance is not changed, so that the performance of the seed metering device is reduced when sowing different seeds.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a variable suction hole double-disc air suction type precise seed metering device; the seed sowing device has the advantages of simple structure, convenient operation and stable performance; is mainly used for sowing soybeans and corns.
In order to achieve the purpose, the invention designs a variable suction hole double-disc air suction type precise seed metering device which comprises a seed metering box body, wherein the seed metering box body consists of an air chamber shell and a front cover body which are symmetrically connected left and right; a horseshoe-shaped negative pressure area of an arc is arranged in the air chamber shell; an air suction port (the air suction port is connected with a negative pressure pipe of a fan, and the negative pressure pipe and the air suction port are clamped by a buckle during connection) is arranged at the top of the air chamber shell, a seed filling chamber is arranged in the front shell, and a seed separation plate is vertically arranged on the inner wall of the front panel and divides the seed filling chamber into a seed filling area and a seed feeding area; the seed metering device is characterized in that seed metering ports (seed metering ports are connected with seed guide pipes) and seed discharging ports (seed discharging ports are used for cleaning residual seeds) which are in one-to-one correspondence with the seed charging areas and the seed metering areas are formed in the bottom of the front shell, a seed metering disc and an adjusting plate are arranged between the air chamber shell and the front shell side by side, a seed metering shaft connected with a chain wheel is arranged on the outer side of the air chamber shell, the other end of the seed metering shaft sequentially penetrates through the air chamber shell, the seed metering disc and the adjusting plate and is connected with an adjusting plate boss on the adjusting plate, an adjusting rod is connected to the other side of the adjusting plate boss, and the other end of the adjusting rod penetrates through the front panel to extend out.
Further, the adjusting plate boss is of a hollow structure, and adjusting rod positioning holes and spring holes are symmetrically formed in the adjusting plate boss along the circumferential direction; a small compression spring is arranged in the spring hole (the small compression spring is inserted in the spring hole to provide assistance for the separation of the adjusting plate and the seed metering plate so as to prevent the seed metering plate from moving outwards along with the adjusting plate during adjustment).
Still further, the center of the adjusting plate is provided with a seed shaft hole, and mounting holes for mounting compression springs are symmetrically arranged on two sides of the seed shaft hole; the small compression spring passes through the mounting hole and is propped against the seed metering disc; the adjusting plate edge symmetry is provided with adjusting plate location boss, be provided with two rings of type holes along the circumferencial direction interval on the adjusting plate between adjusting plate location boss and the mounting hole, be outer lane type hole and inner circle type hole respectively.
Still further, the outer ring type hole is circular, and the inner ring type hole is spoon-shaped and is formed by combining a semicircle with the radius of R=2-4 mm and a trapezoid with the height of L=13-14 mm; the inner ring type hole is inclined to one side, and the inclination angle alpha is 25-35 degrees relative to the radial direction.
Still further, two groups of grooves are symmetrically arranged on the edge of the seed metering disc (when the positioning boss of the adjusting plate is respectively clamped with the two groups of grooves, the change of the shape of the suction hole is realized); two circles of holes are formed in the seed metering disc at intervals along the circumferential direction, namely an outer circle suction hole and an inner circle suction hole (the inner circle suction hole is suitable for corn sowing when working, and is suitable for soybean sowing when working), and the outer circle suction hole and the inner circle suction hole are arranged in a staggered manner along the radial direction; the center of the seed metering disc is provided with a seed metering shaft small hole, and a plurality of mounting small holes are symmetrically arranged outside the seed metering shaft small hole.
Still further, the adjusting plate and the adjusting plate boss are internally provided with a seed plate boss (the seed plate boss is an important part for circumferential fixation between the seed plate and the seed shaft, and simultaneously axial guiding is provided when the adjusting plate is pulled outwards in the process of adjusting the shape of the suction hole), and the seed plate boss is fixed on the seed plate through the small mounting hole.
Still further, the adjusting rod is a three-way rod, and comprises two parallel forked positioning rods and an adjusting support rod at the other end, wherein the forked positioning rods are inserted into the positioning holes of the adjusting rod, the adjusting support rod penetrates through the front panel to extend out, and the end part of the adjusting support rod is provided with a pull ring; an adjusting rod boss is arranged on the adjusting support rod, a supporting block is arranged between the adjusting rod boss and the front panel, and the supporting blocks are all arranged on the front panel through bolts; and the adjusting support rod and the supporting block are provided with a compression spring for tensioning.
Still further, the seed shaft is sleeved with rolling bearings at two ends of the air chamber shell; and a key a and a key b (two keys are used for circumferential fixation between the two keys) are respectively arranged between the seed shaft and the sprocket and the seed plate boss.
Still further, the seed delivery tube is mounted on a front panel of the front housing, and the front panel is made of transparent material (facilitating observation of seed filling quality); l-shaped bases are symmetrically arranged on two sides of the air chamber shell.
Still further, seal grooves are symmetrically formed in the circumferential direction of the front shell and the air chamber shell, and an air cushion seal ring is arranged between the two seal grooves when the front shell and the air chamber shell are assembled; the opening of the seed discharging opening is provided with a seed discharging block which is controlled to be opened and closed, and the seed discharging block is connected with the front shell through bolts (when two fixing bolts at the lower end are detached and the seed discharging block is taken down, seeds in the seed filling chamber can be cleaned out); and hairbrush strips (the hairbrush strips are in contact with the adjusting plate) are arranged in the bolt connecting grooves of the separating plates, and the distance between the hairbrush and the adjusting plate is adjusted through the bolt connecting grooves of the separating plates.
The invention has the beneficial effects that:
According to the invention, the adjusting rod is pulled up and rotated to drive the adjusting plate to rotate for a certain angle, and the relative positions of the holes on the adjusting plate and the holes on the seed metering disc are changed, so that the shape of the effective suction holes when the seed metering device works is changed, the adaptability of the seed metering device to soybean and corn seeds is enhanced, and the seed filling performance is improved. When the shape of the suction hole is required to be regulated, the regulating rod is only required to be pulled up and rotated, and when the positioning boss on the regulating plate is aligned with the groove on the seed metering disc again, the regulating rod is released, so that the seed metering disc and the regulating plate can be reset by spring force and positioned. The adjusting and positioning mechanism has the advantages of simple structure and convenience in operation, avoids the damage to the tightness of the pneumatic seed sowing device caused by the disassembling machine, better ensures the seed sowing performance when sowing different seeds, and is beneficial to improving the working efficiency.
Drawings
FIG. 1 is a perspective view of a variable suction orifice double-disk air suction type precision seed metering device of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the precision seed metering device;
FIG. 3 is a schematic diagram of a dual disc adjustment mechanism;
FIG. 4 is a double disk split;
FIG. 5 is a schematic view of a seed plate;
FIG. 6 is a schematic view of a regulator plate;
FIG. 7 is a schematic view of the structure of the adjusting plate boss;
FIG. 8 is a schematic view of an adjustment lever;
FIG. 9 is a schematic view of the front housing;
FIG. 10 is a front housing cross-sectional view;
FIG. 11 is a detail view of the front panel;
FIG. 12 is a schematic view of a plenum housing;
FIG. 13 is a double-disc position diagram of the inner ring suction hole in operation;
FIG. 14 is a diagram of the double disc position during operation of the outer race suction holes;
The device comprises an air suction port 1, an adjusting plate 2, a seed shaft hole 2.1, a mounting hole 2.2, an adjusting plate positioning boss 2.3, an outer ring-shaped hole 2.4, an inner ring-shaped hole 2.5, a front shell 3, a seed feeding port 3.1, a seed discharging port 3.2, a seed filling chamber 3.3, a seed filling area 3.4, a seed feeding area 3.5, a seed delivering pipe 4, a supporting block 5, an adjusting rod 6, a forked positioning rod 6.1, an adjusting support rod 6.2, an adjusting rod boss 6.3, a pull ring 7, a compression spring 8, a key a9, a front panel 10, a seed discharging block 11, an air cushion sealing ring 12, an air chamber shell 13, a horseshoe-shaped negative pressure area 13.1, a rolling bearing 14, a key b15, a chain wheel 16, a seed shaft 17, a seed plate boss 18, a seed plate 19, a groove 19.1, an outer ring suction hole 19.2, an inner ring suction hole 19.3, a seed shaft 19.4, an installing small hole 19.5, an adjusting plate boss 20, an adjusting rod positioning hole 20.1, a spring hole 20.2, a base 21, a partition 22, a brush sealing groove 25 and a small seal groove 25.
Detailed Description
The present invention is described in further detail below in conjunction with specific embodiments for understanding by those skilled in the art.
The variable suction hole double-disc air suction type precise seed metering device shown in fig. 1-14 comprises a seed metering box body, wherein the seed metering box body consists of an air chamber shell 13 and a front cover body which are symmetrically connected left and right, the air chamber shell 13 is formed by numerical control processing of an aluminum alloy material, and L-shaped bases 21 are symmetrically arranged on two sides of the air chamber shell 13 through bolts; a horseshoe-shaped negative pressure area 13.1 with 3/4 circular arcs is arranged in the air chamber shell 13; the negative pressure zone 13.1 starts from the right below and ends to the right left; the top of the air chamber shell 13 is provided with an air suction port 1, and the air suction port 1 is arranged in the central area of the negative pressure area; the air suction port 1 is connected with a negative pressure pipe of the fan through a clamping buckle,
The front cover body comprises a front shell 3; the front panel 10 is mounted on the side surface of the front shell 3 through 4 bolts; the front panel 10 is made of transparent material for facilitating observation of the seed filling quality; the outer wall of the front panel 10 is provided with a seed delivery pipe 4 through bolts, and a feed inlet at the upper end of the seed delivery pipe 4 is communicated with a feed box; the front shell 3 and the air chamber shell 13 are symmetrically provided with sealing grooves 23 along the circumferential direction, and when the front shell 3 and the air chamber shell 13 are assembled, an air cushion sealing ring 12 is arranged between the two sealing grooves 23, and the front shell 3 and the air chamber shell 13 are fixed through bolts;
the front shell 3 is internally provided with a seed filling chamber 3.3, the inner wall of the front panel 10 is vertically provided with a baffle plate 22, and a hairbrush strip 24 is arranged in a bolt connecting groove of the baffle plate 22; the hairbrush strips 24 are in contact with the adjusting plate, and the distance between the hairbrush strips 24 and the adjusting plate 2 is adjusted through the bolt connecting grooves of the separating plates;
The seed filling chamber 3.3 is divided into a seed filling area 3.4 and a seed feeding area 3.5 by a seed separating plate 22; the bottom of the front shell 3 is provided with seed feeding ports 3.1 which are in one-to-one correspondence with the seed charging areas 3.4 and the seed feeding areas 3.5 and seed discharging ports 3.2 for cleaning residual seeds; the seed inlet 3.1 is connected with a seed guide pipe, the opening of the seed discharging inlet 3.2 is provided with a seed discharging block 11 for controlling the opening and closing, and the seed discharging block 11 is connected with the front shell 3 through a bolt; when the two fixing bolts at the lower end are disassembled and the seed unloading block is taken down, seeds in the seed filling chamber can be cleared out;
A seed metering disc 19 and an adjusting plate 2 are arranged between the air chamber shell 13 and the front shell 3 side by side, a seed metering shaft hole 2.1 is arranged in the center of the adjusting plate 2, and mounting holes 2.2 for mounting a compression spring 25 are symmetrically arranged on two sides of the seed metering shaft hole 2.1; the edge of the adjusting plate 2 is symmetrically provided with an adjusting plate positioning boss 2.3, and two circles of holes, namely an outer circle hole 2.4 and an inner circle hole 2.5, are formed in the adjusting plate 2 between the adjusting plate positioning boss 2.3 and the mounting hole 2.2 at intervals along the circumferential direction; the number of the outer ring type holes 2.4 and the outer ring type holes 2.5 is 30; the outer ring type hole 2.4 is provided with a conical nest with the depth of 1mm according to the outline shape of the soybean; the inner ring type hole 2.5 is cut into a spoon shape according to the shape of the outer contour of the corn; it is formed by combining a semicircle with radius R=3 mm and a trapezoid with height L=13.65 mm; the inner ring type hole 2.5 is inclined to one side, and the inclination angle alpha is 25-35 degrees relative to the radial direction;
Two groups of grooves 19.1 are symmetrically arranged on the edge of the seed metering disc 19, and when the positioning bosses 2.3 of the adjusting plate are respectively clamped with the two groups of grooves 19.1, the shape change of the suction hole is realized; a groove 19.1 and an outer ring suction hole are arranged along the same radial direction, so that the outer ring suction hole can work normally when the groove 19.1 is clamped with the adjusting plate positioning boss 2.1; the other groove 19.1 and the inner ring suction hole are arranged along the same radial direction, so that the inner ring suction hole can work normally when the groove 19.1 is clamped with the adjusting plate positioning boss 2.1; the seed metering disc 19 is provided with two circles of holes with the same quantity along the circumferential direction at intervals, namely an outer circle suction hole 19.2 and an inner circle suction hole 19.3, and the number of the outer circle suction holes 19.2 and the inner circle suction holes 19.3 is 30; the diameter of the inner ring suction hole 19.3 is 5.9-6.1mm, and the diameter of the outer ring suction hole 19.2 is 5.1-5.3mm; the outer ring suction holes 19.2 and the inner ring suction holes 19.3 are arranged in a staggered manner along the radial direction; the center of the seed plate 19 is provided with a seed shaft small hole 19.4, and 4 mounting small holes 19.5 are symmetrically arranged outside the seed shaft small hole 19.4.
The outer side of the air chamber shell 13 is provided with a seed shaft 17 connected with a sprocket 16 for transmitting power, the other end of the seed shaft 17 sequentially passes through the air chamber shell 13, a seed plate 19 and an adjusting plate 2 and is linked with an adjusting plate boss 20 on the adjusting plate 2, the adjusting plate boss 20 is of a hollow structure, and adjusting rod positioning holes 20.1 and spring holes 20.2 are symmetrically arranged on the adjusting plate boss 20 along the circumferential direction; a small compression spring 25 is arranged in the spring hole 20.2; the compression small spring 25 passes through the mounting hole 2.2 and is propped against the seed metering disc 19; a small compression spring 25 is inserted into the spring hole 20.2 to provide assistance for the separation of the adjusting plate and the seed metering disc so as to prevent the seed metering disc from moving outwards along with the adjusting plate during adjustment.
The other side of the adjusting plate boss 20 is connected with an adjusting rod 6, the adjusting rod 6 is a three-way rod and comprises two parallel forked positioning rods 6.1 and an adjusting support rod 6.2 at the other end, the forked positioning rods 6.1 are inserted into the adjusting rod positioning holes 20.1, the adjusting support rod 6.2 penetrates through the front panel 10 to extend out, and a pull ring 7 is arranged at the end part of the adjusting support rod 6.2; an adjusting rod boss 6.3 is arranged on the adjusting support rod 6.2, a supporting block 5 is arranged between the adjusting rod boss 6.3 and the front panel 10, and the supporting blocks 5 are all arranged on the front panel 10 through bolts; the adjusting strut 6.2 and the supporting block 5 are provided with a compression spring 8 for tensioning;
Seed metering disc bosses 18 are arranged in the adjusting plate 2 and the adjusting plate bosses 20; the seed plate boss 18 is fixed on the seed plate 19 through bolts and 4 mounting small holes 19.5; the seed plate boss is an important part for circumferential fixation between the seed plate 19 and the seed shaft 17, and simultaneously provides axial guidance when the adjusting plate 2 is pulled outwards in the process of adjusting the shape of the suction hole;
the seed shaft 17 is sleeved with rolling bearings 14 at two ends of the air chamber shell 13; a key a9 and a key b15 are respectively arranged between the seed shaft 17 and the sprocket and the seed plate boss 18.
The working process of the variable suction hole double-disc air suction type precise seed metering device is as follows:
1) Before the operation, the seed type to be sown is determined, then the adjusting rod 6 is pulled up by the pull ring 7, the adjusting plate 2 is separated from the seed metering disc 19 under the action of the spring force and the axial guiding of the seed metering disc boss 18,
2) When the adjusting plate positioning boss 2.3 is separated from the groove 19.1 of the seed metering disc 19, the adjusting rod 6 is rotated to enable the corresponding suction hole to enter a working state, then the adjusting rod 6 is loosened, and the adjusting plate positioning boss 2.3 is clamped with the groove 19.1 of the seed metering disc 19 again by means of the compression spring 8;
3) Then the seeds are put into a seed box, and the seeds fall into the seed filling area 3.4 through the seed delivery pipe 4 under the action of gravity to form a seed pile. The air suction port 1 is connected with a negative pressure pipe of the fan, and the negative pressure pipe and the air suction port 1 are clamped by a buckle during connection, so that air leakage is prevented; when the vacuum air conditioner works, the fan is started, and a vacuum air chamber with a certain seed suction negative pressure is formed in the horseshoe-shaped negative pressure area 13.1 due to the air suction effect of the fan; under the drive of a motor, the seed shaft 17 drives the seed plate 19 and the regulating plate 2 to rotate at a constant speed;
4) The non-working holes can act as a stirring function at this time, increasing the filling force of the seeds. When the outer ring type hole 2.4 or the inner ring type hole 2.5 is turned to the negative pressure seed sucking area corresponding to the negative pressure air chamber, seeds are adsorbed in the type holes due to the action of the internal and external pressure difference. With the rotation of the seed metering disc 19 and the regulating plate 2, the holes leave the population, redundant seeds do not dominate due to adsorption force, seed cleaning is completed under the action of self gravity, and each hole only adsorbs one seed; when the hole continues to rotate to the position above the left seed feeding port 3.1, seeds fall to the seed feeding port 3.1 under the action of self gravity because the negative pressure is isolated, and are guided into a seed bed through a seed discharging pipe; thus, the purpose of single-grain precision seeding is achieved by circulation.
According to the invention, the relative positions of the adjusting plate type holes and the suction holes of the seed metering disc are changed, so that the shape of the holes of the seed metering device during working is changed, the convenient switching of soybean and corn sowing is realized, and the pertinence of sowing is enhanced. The pneumatic seed metering device is simple in structure and convenient to operate, avoids the damage of the sealing property of the pneumatic seed metering device caused by the disassembling machine, better ensures the seed metering performance when different seeds are sown, and is beneficial to improving the working efficiency.
Other parts not described in detail are prior art. Although the foregoing embodiments have been described in some, but not all, embodiments of the invention, it should be understood that other embodiments may be devised in accordance with the present embodiments without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a become and inhale two disc air-aspiration type precision seed metering ware of hole, it includes seed metering box, seed metering box comprises air chamber casing (13) and the preceding cover body that bilateral symmetry set up, the preceding cover body includes preceding casing (3), preceding casing (3) side is provided with front panel (10), install on the outer wall of front panel (10) and pass kind pipe (4), the feed inlet of passing kind pipe (4) upper end communicates with the workbin; the method is characterized in that: a horseshoe-shaped negative pressure area (13.1) with an arc is arranged in the air chamber shell (13); an air suction port (1) is formed in the top of the air chamber shell (13), a seed filling chamber (3.3) is arranged in the front shell (3), a seed separation plate (22) is vertically arranged on the inner wall of the front panel (10), and the seed filling chamber (3.3) is separated by the seed separation plate (22) and is divided into a seed filling area (3.4) and a seed feeding area (3.5); seed feeding ports (3.1) and seed discharging ports (3.2) which are in one-to-one correspondence with the seed charging areas (3.4) and the seed feeding areas (3.5) are formed in the bottom of the front shell (3), a seed metering disc (19) and an adjusting plate (2) are arranged between the air chamber shell (13) and the front shell (3) side by side, a seed metering shaft (17) connected with a chain wheel (16) is arranged on the outer side of the air chamber shell (13), the other end of the seed metering shaft (17) sequentially penetrates through the air chamber shell (13), the seed metering disc (19) and the adjusting plate (2) and is connected with an adjusting plate boss (20) on the adjusting plate (2), the adjusting plate boss (20) is of a hollow structure, and adjusting plate bosses (20.1) and spring holes (20.2) are symmetrically arranged along the circumferential direction; a small compression spring (25) is arranged in the spring hole (20.2);
An adjusting rod (6) is connected to the other side of the adjusting plate boss (20), and the other end of the adjusting rod (6) penetrates through the front panel (10) to extend out; a seed shaft hole (2.1) is formed in the center of the adjusting plate (2), and mounting holes (2.2) for mounting the compression springs 25 are symmetrically formed in two sides of the seed shaft hole (2.1); the small compression spring 25 passes through the mounting hole (2.2) to be propped against the seed metering disc (19); the edge of the adjusting plate (2) is symmetrically provided with adjusting plate positioning bosses (2.3), two circles of holes are formed in the adjusting plate (2) between the adjusting plate positioning bosses (2.3) and the mounting holes (2.2) at intervals along the circumferential direction, and the two circles of holes are respectively an outer circle type hole (2.4) and an inner circle type hole (2.5);
Two groups of grooves (19.1) are symmetrically arranged on the edge of the seed metering disc (19); two circles of holes are formed in the seed metering disc (19) at intervals along the circumferential direction, the holes are respectively an outer ring suction hole (19.2) and an inner ring suction hole (19.3), and the outer ring suction hole (19.2) and the inner ring suction hole (19.3) are arranged in a staggered manner along the radial direction; the center of the seed metering disc (19) is provided with a seed metering shaft small hole (19.4), a plurality of mounting small holes (19.5) are symmetrically arranged outside the seed metering shaft small hole (19.4), and when the adjusting plate positioning boss (2.3) is respectively clamped with the two groups of grooves (19.1), the change of the shape of the suction hole is realized.
2. The variable suction hole double-disc air suction type precise seed metering device according to claim 1, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: the outer ring type hole (2.4) is round, the inner ring type hole (2.5) is spoon-shaped and is formed by combining a semicircle with the radius R=2-4 mm and a trapezoid with the height L=13-14 mm; the inner ring type hole (2.5) is inclined to one side, and the inclination angle alpha is 25-35 degrees relative to the radial direction.
3. The variable suction hole double-disc air suction type precise seed metering device according to claim 1, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: the seed metering disc boss (18) is arranged in the adjusting plate (2) and the adjusting plate boss (20), and the seed metering disc boss (18) is fixed on the seed metering disc (19) through the mounting small hole 19.5.
4. The variable suction hole double-disc air suction type precise seed metering device according to claim 1, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: the adjusting rod (6) is a three-way rod and comprises two parallel forked positioning rods (6.1) and an adjusting support rod (6.2) at the other end, the forked positioning rods (6.1) are inserted into the adjusting rod positioning holes (20.1), the adjusting support rod (6.2) penetrates through the front panel (10) to extend out, and a pull ring (7) is arranged at the end part of the adjusting support rod (6.2); an adjusting rod boss (6.3) is arranged on the adjusting support rod (6.2), a supporting block (5) is arranged between the adjusting rod boss (6.3) and the front panel (10), and the supporting blocks (5) are all arranged on the front panel (10) through bolts; the adjusting support rod (6.2) and the supporting block (5) are provided with a compression spring (8) for tensioning.
5. The variable suction hole double-disc air suction type precise seed metering device according to claim 3, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: the seed shaft (17) is sleeved with rolling bearings (14) at two ends of the air chamber shell (13); a key a (9) and a key b (15) are respectively arranged between the seed metering shaft (17) and the sprocket (16) as well as between the seed metering disc boss (18).
6. The variable suction hole double-disc air suction type precise seed metering device according to claim 1, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: the seed delivery pipe (4) is arranged on a front panel (10) of the front shell (3), and the front panel (10) is made of transparent materials; l-shaped bases (21) are symmetrically arranged on two sides of the air chamber shell (13).
7. The variable suction hole double-disc air suction type precise seed metering device according to claim 1, wherein the variable suction hole double-disc air suction type precise seed metering device is characterized in that: sealing grooves (23) are symmetrically formed in the circumferential direction of the front shell (3) and the air chamber shell (13), and an air cushion sealing ring (12) is arranged between the two sealing grooves (23) when the front shell (3) and the air chamber shell (13) are assembled; a seed discharging block (11) for controlling the opening and closing is arranged at the opening of the seed discharging opening (3.2), and the seed discharging block (11) is connected with the front shell (3) through a bolt; hairbrush strips (24) are arranged in the bolt connecting grooves of the separating plates (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907695.4A CN110583176B (en) | 2019-09-24 | 2019-09-24 | Variable suction hole double-disc air suction type precise seed metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910907695.4A CN110583176B (en) | 2019-09-24 | 2019-09-24 | Variable suction hole double-disc air suction type precise seed metering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110583176A CN110583176A (en) | 2019-12-20 |
| CN110583176B true CN110583176B (en) | 2024-05-14 |
Family
ID=68863198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910907695.4A Active CN110583176B (en) | 2019-09-24 | 2019-09-24 | Variable suction hole double-disc air suction type precise seed metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110583176B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113016292B (en) * | 2021-04-21 | 2022-05-10 | 山东理工大学 | Air-suction type precision seed sowing device with adjustable suction hole size |
| CN113287395B (en) * | 2021-06-08 | 2022-06-24 | 安徽农业大学 | Inclined cavity type rice precision hole sowing seed sowing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206442690U (en) * | 2017-01-17 | 2017-08-29 | 河北省农业机械化研究所有限公司 | Double-arc spline plane-of-weakness joint type air-suction seed metering device |
| CN108293372A (en) * | 2017-01-11 | 2018-07-20 | 四川农业大学 | A kind of aspirated-air type single-kernel seed-metering device |
| CN109566018A (en) * | 2018-12-21 | 2019-04-05 | 华中农业大学 | One device duplicate rows high speed strength precision seeder |
| CN208850156U (en) * | 2018-09-20 | 2019-05-14 | 中国农业大学 | A kind of general precision drilling feed mechanism for seed |
| CN211128946U (en) * | 2019-09-24 | 2020-07-31 | 华中农业大学 | Suction-hole-variable double-disc air-suction type precision seed sowing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9137942B2 (en) * | 2013-01-02 | 2015-09-22 | Cnh Industrial America Llc | Low torque and vacuum seed meter |
-
2019
- 2019-09-24 CN CN201910907695.4A patent/CN110583176B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108293372A (en) * | 2017-01-11 | 2018-07-20 | 四川农业大学 | A kind of aspirated-air type single-kernel seed-metering device |
| CN206442690U (en) * | 2017-01-17 | 2017-08-29 | 河北省农业机械化研究所有限公司 | Double-arc spline plane-of-weakness joint type air-suction seed metering device |
| CN208850156U (en) * | 2018-09-20 | 2019-05-14 | 中国农业大学 | A kind of general precision drilling feed mechanism for seed |
| CN109566018A (en) * | 2018-12-21 | 2019-04-05 | 华中农业大学 | One device duplicate rows high speed strength precision seeder |
| CN211128946U (en) * | 2019-09-24 | 2020-07-31 | 华中农业大学 | Suction-hole-variable double-disc air-suction type precision seed sowing device |
Non-Patent Citations (1)
| Title |
|---|
| 负压驱动水稻精量直播排种器设计与试验研究;魏海明;杨发展;李建东;刘永武;罗佳;杨薇;;农机化研究;20181224(第10期) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110583176A (en) | 2019-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110583176B (en) | Variable suction hole double-disc air suction type precise seed metering device | |
| CN101317507A (en) | Pneumatic precision seeder | |
| CN107318318A (en) | The adjustable Pneumatic seeding apparatus of one kind amount of broadcasting | |
| CN110012709B (en) | Air-suction type garlic directional seed sowing device | |
| CN114271077A (en) | Positive and negative pressure combined type soybean precision seed sowing device | |
| CN106612785A (en) | Combined nest hole type seed sowing device capable of adjusting sowing amount | |
| CN107736112B (en) | Mechanical and pneumatic combined vegetable precision seed sowing device | |
| CN211128946U (en) | Suction-hole-variable double-disc air-suction type precision seed sowing device | |
| CN112106466A (en) | Pneumatic needle type single-grain precision seeder | |
| CN113661806B (en) | Multipurpose air-suction type mixed bean precision planter and sowing test device | |
| CN105165188B (en) | A kind of hand push driven sucking precise drop planter | |
| CN109588088A (en) | Aspiration type hole wheel combined type feed mechanism for seed and seed feeding method | |
| CN201238453Y (en) | Pneumatic type precision seeder | |
| CN108337959B (en) | American ginseng pneumatic needle precision collecting and discharging device | |
| CN108464092B (en) | District automatic control seeder | |
| CN108901270B (en) | Universal seed sowing device suitable for precise sowing of beans | |
| CN113141821B (en) | A precision planter for maize breeding test | |
| CN103733775B (en) | Pneumatic roller type tray seeder | |
| CN111699795A (en) | Double-channel seed sowing device for soybean ridge sowing | |
| CN110226394B (en) | Combined honeycomb single-disc double-row seed sowing device | |
| CN214676507U (en) | A precision planter for maize breeding is experimental | |
| CN108541426A (en) | A kind of novel outer pocket air-sweeping type einkorn precision wheat feed mechanism for seed | |
| CN212544499U (en) | Planetary wheel type precise seed guiding precision seeder | |
| CN108934326A (en) | A kind of corn and soybean aspirated-air type universal seeding apparatus | |
| CN209749115U (en) | Special seeder of shallot |
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 |