CN106489377B - Aspirated-air type low level zero-speed sows feed mechanism for seed - Google Patents

Abstract

Aspirated-air type low level zero-speed sowing feed mechanism for seed belongs to agricultural machinery；Drive shaft is equipped on fixing sleeve, active disk is fixedly mounted on the driving shaft, eccentric disc and eccentric aspiration disk are packed on fixing sleeve, closing disk is sealed to be mounted on eccentric disc, it is equipped between sealing closing disk and active disk and turns shaft type suction discharging tube, setting arc air-flow blocks boss on position among the eccentric aspiration disk internal face bottom side, on eccentric aspiration disk, plants case is equipped at the side-lower position of eccentric aspiration disk, sealing closing disk and active disk, clear kind of hairbrush configuration is at the suction kind mouth of plants case；This device realizes air-suction seeding unit low level, vertical, horizontal zero-speed seeding operation, the kind grain being discharged by air-suction seeding unit directly row can be broadcast on kind of bed soil earth, seed spout is omitted, has the characteristics that structure novel, simple, reasonable, seeding operation is high-quality, precision is high, service-strong.

Description

Aspirated-air type low level zero-speed sows feed mechanism for seed

Technical field

The invention belongs to agricultural machinery, relates generally to a kind of air-suction seeding unit.

Background technology

With the development of accurate seeding technique in China's agricultural, the zero speed of seed dropping in seeding operation has become guarantee and reality The now precondition of accurate seeding operation.So-called " zero speed of seed dropping " refers to that the seed being discharged out of feed mechanism for seed is being fallen in kind of a bed soil earth The horizontal velocity of moment is zero when on surface.During zero speed of seed dropping, seed when being contacted with kind of a bed soil surface relative to Soil surface without sliding, without bounce, the plant spacing pass rate and accuracy rate of sowing is greatly improved, ensure that seeding operation Quality.In recent years, numerous universities and colleges, agricultural sciences academy and institute in one's power agricultural machinery enterprise for meet and realize " zero speed of seed dropping " carry out Equipment researchs and develops, but fails to reach agriculture requirement always.

Invention content

The purpose of the invention is aiming at the above-mentioned problems of the prior art, in conjunction with the reality of " zero speed of seed dropping " operation Border needs, and design provides a kind of aspirated-air type low level zero-speed sowing feed mechanism for seed of new construction, reaches and realizes zero speed of seed dropping, ensures sowing The purpose of operation plant spacing pass rate and accuracy rate.

What the purpose of the invention was realized in：Drive shaft is rotatably equipped in fixing sleeve, in the driving Concentric on the end of axis to be fixedly mounted with active disk, eccentric disc is packed on fixing sleeve outside, the disk of the eccentric disc Central point configures in horizontal direction with eccentric disc bias central point of hole line, is gone up outside the fixing sleeve, is located at off-centre operation Pan Cebuchu is fixedly mounted with the eccentric aspiration disk with air entry, the axle center of the axial line and eccentric disc of the bias aspiration disk Line overlaps, and sealing closing disk is rotatably mounted on eccentric disc circumferential outer surface, the sealing closing disk and eccentric aspiration Disk sealing cooperation constitutes aspiration negative pressure chamber, and what is reciprocally swung on position between sealing closing disk and active disk is equipped It turns shaft type and inhales discharging tube, the shaft type suction kind tube axis line that turns configures in vertical direction, and it is negative with aspiration to turn shaft type suction discharging tube Chamber is pressed, the setting arc gas on position among the eccentric aspiration disk internal face bottom side opposite with sealing closing disk Flow resistance is broken boss, and the arc air-flow blocks boss to be located on the vertical line position of eccentric aspiration disc centre, and is inhaled with shaft type is turned The negative pressure aspiration mouth of discharging tube is in blocking the contact of air-flow to seal cooperation or the non-contact unlatching cooperation of connection air-flow, in eccentric gas It inhales on disk, be equipped with plants case, clear kind of hairbrush at the side-lower position of eccentric aspiration disk, sealing closing disk and active disk Be fitted at the suction kind mouth of plants case, it is described turn shaft type and inhale discharging tube may pass through clear kind of hairbrush and be inserted into plants case, inhaled turning shaft type Ladder-like gap is opened up on the lower end of discharging tube, the direction of the ladder-like gap gap is sowed with aspirated-air type low level zero-speed arranges The preceding line direction of kind device sows feed mechanism for seed on the contrary, so far constituting aspirated-air type low level zero-speed.

The invention is perpendicular to the ground always in the direction that ensures to charge seed and while charge seed position in low level, can be with The seed for making to be in position of charging seed has and moves ahead the horizontal tangential speed that speed is identical, direction is opposite with equipment, to and equipment Forward speed offsets, and avoids spring, sliding of the seed on soil, realizes zero-speed sowing.This device is also greatly lowered Seed casting point height and position, reduces seed vertical drop acceleration, have structure novel, operation quality it is good, using reliable, logical The feature strong with degree height, ability to provide the auxiliary items is changed.

Description of the drawings

Fig. 1 is aspirated-air type low level zero-speed sowing feed mechanism for seed general structure schematic diagram；

Fig. 2 be in Fig. 1 A-A to echelon sectional view；

Fig. 3 is B-B sectional views in Fig. 1；

Fig. 4 is that eccentric aspiration disk blocks boss configuration structure schematic diagram with arc air-flow；

Fig. 5 is to turn shaft type to inhale the ladder-like gap structural schematic diagram of discharging tube.

Piece number explanation in figure：

1, drive shaft, 2, fixing sleeve, 3, active disk, 4, turn shaft type inhale discharging tube, 5, sealing closing disk, 6, off-centre operation Disk, 7, eccentric aspiration disk, 8, plants case, 9, arc air-flow block boss, 10, clear kind of hairbrush, 11, air entry, 12, ladder-like slit Mouthful.

Specific implementation mode

The invention embodiment is described in detail below in conjunction with the accompanying drawings.A kind of aspirated-air type low level zero-speed sowing row Kind of device is rotatably equipped with drive shaft 1 in fixing sleeve 2, concentric on the end of the drive shaft 1 to be fixedly mounted with active disk 3, eccentric disc 6 is packed on 2 outside of fixing sleeve, disc centre point and the 6 eccentric orfice center of eccentric disc of the eccentric disc 6 It puts line to configure in horizontal direction, goes up outside the fixing sleeve 2, is fixedly mounted with air entry 11 at 6 side of eccentric disc Eccentric aspiration disk 7, the axial line of the bias aspiration disk 7 overlaps with the axial line of eccentric disc 6, sealing closing disk 5 It is rotatably mounted on 6 circumferential outer surface of eccentric disc, the sealing closing disk 5 seals cooperation structure with eccentric aspiration disk 7 At aspiration negative pressure chamber, what is reciprocally swung on position between sealing closing disk 5 and active disk 3 equipped turns shaft type suction kind Pipe 4, shaft type suction 4 axial line of discharging tube that turns configure, turn shaft type and inhale discharging tube 4 and company of aspiration negative pressure chamber in vertical direction It is logical, the setting arc air-flow blocking on position among the eccentric 7 internal face bottom side opposite with sealing closing disk 5 of aspiration disk Boss 9, the arc air-flow block boss 9 to be located on the vertical line position in eccentric 7 center of aspiration disk, and with turn shaft type suction kind The negative pressure aspiration mouth of pipe 4 is in blocking the contact of air-flow to seal cooperation or the non-contact unlatching cooperation of connection air-flow, in eccentric aspiration On disk 7, positioned at eccentric aspiration disk 7, sealing closing disk 5 and active disk 3 side-lower position at be equipped with plants case 8, clear kind Hairbrush 10 is fitted at the suction kind mouth of plants case 8, it is described turn shaft type and inhale discharging tube 4 may pass through clear kind of hairbrush 10 and be inserted into plants case 8, Ladder-like gap 12, the direction and aspiration of 12 gap of ladder-like gap are opened up on the lower end for turning shaft type suction discharging tube 4 The preceding line direction that formula low level zero-speed sows feed mechanism for seed is opposite.

When operation, on fixing sleeve 2, the rotary motion of drive shaft 1 through active disk 3, turn shaft type inhale discharging tube 4 drive it is close It seals closing disk 5 to rotate relative to eccentric aspiration disk 7 on eccentric disc 6, negative-pressure gas makes through air entry 11 by sealing dome The aspiration negative pressure chamber that plate 5 is constituted with eccentric aspiration disk 7 generates negative pressure, when turn shaft type inhale the negative inspiratory pressure mouth of discharging tube 4 with When arc air-flow blocks boss 9 to be detached from cooperation, the shaft type suction discharging tube 4 that turns in plants case 8 adsorbs seed, by clear kind of hairbrush After 10 remove extra seed, produced out of plants case 8；It is turned to when inhaling the seed-bearing negative inspiratory pressure mouth for turning shaft type suction discharging tube 4 When with being in contact with it blocking cooperation at arc air-flow blocking boss 9, turning shaft type and inhaling negative-pressure sucking disappearance in discharging tube 4, due to arc Shape air-flow blocks boss 9 to be located on the vertical line position in eccentric 7 center of aspiration disk, conducts oneself with dignity in seed and sealing closing disk 5 rotates Making seed under centrifugal force collective effect, low level is discharged in vertical direction, at the same time, in the tangential inertia that sealing closing disk 5 rotates Push it is dynamic under, the seed of discharge has to move ahead the horizontal velocity that speed is equal, direction is opposite with equipment, to realize seed phase The zero-speed sowing for being zero for kind of bed soil earth horizontal velocity.It is right using the ladder-like gap 12 for turning shaft type suction 4 lower end of discharging tube Just from the pushing effect for turning the shaft type suction discharge seed of discharging tube 4, Seed Levels speed and the forward similar rate of equipment are kept, to carry High zero-speed seeding operation precision.

Claims (1)

1. a kind of aspirated-air type low level zero-speed sows feed mechanism for seed, drive shaft (1) is rotatably equipped in fixing sleeve (2), described It is concentric on the end of drive shaft (1) to be fixedly mounted with active disk (3), it is characterised in that：Eccentric disc (6) is packed in fixing sleeve (2) on outside, the eccentric central point of hole line of disc centre point and eccentric disc (6) of the eccentric disc (6) is in horizontal direction Configuration is fixedly mounted with the eccentric aspiration with air entry (11) on the fixing sleeve (2) outside, at eccentric disc (6) side The axial line of disk (7), the bias aspiration disk (7) is overlapped with the axial line of eccentric disc (6), and sealing closing disk (5) can Rotation is mounted on eccentric disc (6) circumferential outer surface, and the sealing closing disk (5) seals with eccentric aspiration disk (7) matches It closes and constitutes aspiration negative pressure chamber, what is reciprocally swung on position between sealing closing disk (5) and active disk (3) equipped turns axis Formula inhales discharging tube (4), and described shaft type suction discharging tube (4) axial line that turns configures, turns shaft type and inhale discharging tube (4) and gas in vertical direction Negative pressure chamber's connection is inhaled, in the eccentric aspiration disk (7) and is sealed among the opposite internal face bottom side of closing disk (5) on position Arc air-flow, which is arranged, blocks boss (9), the arc air-flow that boss (9) is blocked to be located at eccentric aspiration disk (7) center vertical line On position, and the negative pressure aspiration mouth of discharging tube (4) is inhaled in the contact sealing cooperation or connection air-flow for blocking air-flow with shaft type is turned Non-contact unlatching cooperation on eccentric aspiration disk (7), is located at eccentric aspiration disk (7), sealing closing disk (5) and active circle Plants case (8) is equipped at the side-lower position of disk (3), clear kind of hairbrush (10) is fitted at the suction kind mouth of plants case (8), described to turn shaft type Suction discharging tube (4) may pass through clear kind of hairbrush (10) and be inserted into plants case (8), be opened on the lower end for turning shaft type suction discharging tube (4) If ladder-like gap (12), direction and the aspirated-air type low level zero-speed of ladder-like gap (12) gap sow moving ahead for feed mechanism for seed Direction is opposite.