CN2402109Y

CN2402109Y - Double-layer cylinder pneumatic seeding apparatus for paddy planter

Info

Publication number: CN2402109Y
Application number: CN 99250971
Authority: CN
Inventors: 苏聪英
Original assignee: BEIHAI CITY AGRICALTURE MECHANZATION INST
Current assignee: BEIHAI CITY AGRICALTURE MECHANZATION INST
Priority date: 1999-11-22
Filing date: 1999-11-22
Publication date: 2000-10-25
Anticipated expiration: 2009-11-22

Abstract

The utility model discloses a double-layer rolling cylinder pneumatic seeding apparatus for paddy planters, the pneumatic seeding apparatus used at present realizes sowing via the back and forth movement between a seed disk and a seed raising disk of a seed suction plate when operated, the operating state is intermittent, and the efficiency is low; the utility model uses a double-layer rolling cylinder pneumatic type, the rolling cylinder is composed of an outer rolling cylinder (5) and a rolling cylinder body (2), a seed suction hole (6) corresponds to an air suction hole (4), a negative pressure is used to suction seeds, the positive pressure is used to sow seeds, and the rolling cylinder body (2) continuously rotate to realize continuous sowing; the utility model has the advantages of low sowing vacant hole rate, high sowing hole intake rate, simple structure and convenient operation.

Description

The two-layer cylinder air-sucking type seeding apparatus of rice seeder

The utility model relates to the seeding apparatus on the rice seeder used in factory's seedling, particularly two-layer cylinder air-sucking type seeding apparatus.

At present, the seeding apparatus that is used for the rice seeder of factory's seedling, adopt outer groove-wheel, interior grooved pulley type nest eye wheel mechanical type dispenser mostly, but seeding accuracy is not high, lack of homogeneity, the hole rate height can not satisfy the required precision of every cave 2-3 grain seed, and because mechanical friction and squeezing action are easily hindered and are planted.For a change this state, some user has also adopted the air-sucking type seeding apparatus, application number is 96204328 Chinese utility model patent, a kind of air-sucking type seeding apparatus is provided, it is made of cylinder, drum shaft and press mold wheel, this device is applicable to sowing and the shop film between dry land, is not suitable for the batch production rice growing.To disclose " research and design of suction specision seeding apparatus " this design be to adopt to inhale kind of plate absorbed seed under condition of negative pressure 55 pages of " agricultural research " magazine 98 year first phases in addition, move on to appropriate location, seedling dish top then, block the source of the gas air-flow again and discharge negative pressure, seed leaves by deadweight inhales the kind cave that kind of plate falls into the seedling dish.This type of seeding is sowed batch production, protection kind of bud, and it is effective avoiding mechanical friction and extruding.But this method need be inhaled kind of plate and be moved around between seed pan and seedling dish, or seed pan and seedling plate wheel change to move to and inhale below kind of the plate, thereby its work can only be intermittent, can not the work of continuity ground determine that its efficient is relatively low.In addition, inhale kind of plate when inhaling kind, suction hole is easily stopped up by broken kind or foreign material and causes the hole, when seed is blocked by suction hole, is difficult to fall in the seedling dish kind cave and causes the hole by the deadweight of seed.

The purpose of this utility model just provides a kind of paddy rice two-layer cylinder air-sucking type seeding apparatus, and the batch production rice growing can be carried out continuously.

For achieving the above object, the utility model has been taked such measure: the two-layer cylinder air-sucking type seeding apparatus of rice seeder, mainly by sprocket wheel, the barrel that is distributed with suction hole regularly fastening and that rotate with sprocket rotation and the vacuum tube that axially runs through cylinder are formed with sprocket wheel, the barrel outer surface wrapping tightly one deck be distributed with suction hole and with barrel on suction hole corresponding outside cylinder, under drum cavity, be provided with and fall kind of the chamber that with source of the gas is communicated with isolated with drum cavity.

Take the utility model of above-mentioned measure, vacuum tube in drum cavity is communicated with drum cavity by pore, under the effect of extractor fan, drum cavity forms negative pressure, when cylinder along with sprocket rotation when the seed bucket, the suction hole on the outer cylinder is adsorbing seed, barrel suction hole bottom is when falling kind of chamber, under the effect of air pressure and seed deadweight, seed is fallen in the kind cave of seedling dish.Barrel of the present utility model is along with sprocket wheel constantly rotates, sowing continuously, high efficiency, can reach 500 dishes/hour; The double-decker of the utility model cylinder, the obstruction of having avoided broken kind and other foreign material to cause effectively reduces hole rate, and hole rate is reduced to below 5%, and 1-4 grain seed point-entering rate is greater than 90%; Air-sucking type operating type of the present utility model has been avoided the injury to kind of bud simultaneously; The utility model is simple in structure, and is easy to operate, and implementing process is simple and easy, and cost is low, can satisfy the agriculture requirement of different rice varieties.

Below in conjunction with drawings and embodiments the utility model is described in further detail:

Fig. 1 is the utility model front view;

Fig. 2 is the A-A cut-away view of Fig. 1;

Fig. 3 is that the partial cutaway diagrammatic sketch is looked on the left side of Fig. 2;

Fig. 4 is a user mode reference diagram of the present utility model.

Shown in above-mentioned accompanying drawing, the utility model mainly is made up of sprocket wheel 1, barrel 2 and vacuum tube 3.Sprocket wheel 1 is fastening with barrel 2, barrel 2 rotates with sprocket wheel 1, barrel 2 is cylindric, numerous suction holes 4 that distributing regularly on its wall, suction hole 4 is a funnel-form, is wrapping tightly the outer cylinder 5 that one deck is made by foil at the outer surface of barrel 2, the thickness of outer cylinder 5 is 0.1-0.2mm, numerous suction holes 6 that distributing on the outer cylinder 5, suction hole 6 is corresponding with suction hole 4, and the aperture of suction hole 6 is 1.2-2.0mm; Vacuum tube 3 axially runs through barrel 2, and sprocket wheel 1 and barrel 2 are around vacuum tube 3 rotations, and vacuum tube 3 one ends are communicated with extractor fan, be provided with an air valve 9, by control handle 10 controls, be used for the size of index drum inner chamber 8 negative pressure, pore 7 and drum cavity 8 conductings are arranged on the wall of vacuum tube 3; The other end of vacuum tube 3 is provided with air inlet pipe joint 11, the outer end and the source of the gas of air inlet pipe joint 11 join, the inner end is communicated with kind of the chamber 13 that falls by tracheae 12, fall kind of chamber 13 by pilot pin 18 be fixed on drum cavity 8 on the vacuum tube 3 under, do not rotate with barrel 2, be a chamber body and barrel 2 inner wall sealings and form long narrow and the cavity isolated with drum cavity 8, by spring 14 its chamber body is pressed under the inwall of barrel 2, when work, be negative pressure in the drum cavity 8, and be malleation in kind of the chamber 13 that falls; Barrel 2 seals with cooperate the sealing ring 15-1 and the 15-2 by vacuum tube 3 two ends of vacuum tube 3.Fig. 4 is the utility model user mode reference diagram, during the utility model work, seedling dish 17 advances to barrel 2 directions under the drive of chain 16, the pitch of chain 16 equates with cave, the kind cave distance of seedling dish 17, chain 16 drive sprockets 1, barrel 2 is along with sprocket wheel 1 rotates, this moment, extractor fan made drum cavity 8 form negative pressure by vacuum tube 3 outside exhausting, when barrel 2 forwards seed bucket 19 directions to, negative pressure in the drum cavity 8 makes suction hole 6 places adsorb seed, barrel 2 is rotated further, under turning to, meanwhile, source of the gas pressurizes to kind of the chamber 13 that falls by air inlet pipe joint 11 and tracheae 12, under the effect of air pressure and seed deadweight, seed accurately falls into the kind cave of seedling dish 17, because the pitch of chain 16 equates with cave, the kind cave distance of seedling dish 17, beyond the rotary speed of cylinder 5 and the point-to-point speed of seedling dish 17 be complementary, when outer cylinder 5 rotated a week, seedling dish 17 was just covered a stroke, therefore, when barrel 2 constantly rotates, when seedling dish 17 constantly advanced, sowing was just constantly carried out continuously, until finishing the sowing process.During the utility model work, can also be by control handle 10 control steam valves 9, the negative pressure in the adjustment drum cavity 8 is once inhaled the quantity of planting by the size control suction hole 6 of adjusting negative pressure in the drum cavity 8, to satisfy the agriculture requirement of Different Rice Varieties.Barrel 2 of the present utility model and outer cylinder 5 form double-decker, outer cylinder 5 walls approach and barrel 2 wall thickness, the aperture of suction hole 4 is greater than the aperture of suction hole 6 and be designed to funnel-form, in case foreign material enter, just be easy to be sucked into, and cross funnel-form suction hole 4 fast and be sucked out the outside, thereby avoid foreign material to stop up, reduce the sowing hole rate.

Claims

1. the two-layer cylinder air-sucking type seeding apparatus of rice seeder, mainly by sprocket wheel, the barrel that is distributed with suction hole regularly fastening and that rotate with sprocket rotation and the vacuum tube that axially runs through barrel are formed with sprocket wheel, it is characterized in that barrel (2) outer surface wrapping tightly one deck be distributed with suction hole (6) and with barrel (2) on the corresponding outer cylinder of suction hole (4) (5), kind of the chamber (13) that falls that is communicated with source of the gas is set under drum cavity (8).

2. two-layer cylinder air-sucking type seeding apparatus according to claim 1 is characterized in that the suction hole (4) on barrel (2) wall is infundibulate.

3. two-layer cylinder air-sucking type seeding apparatus according to claim 1, the wall thickness that it is characterized in that outer cylinder (5) is 0.1-0.2mm.

4. two-layer cylinder air-sucking type seeding apparatus according to claim 1 is characterized in that falling that kind of a chamber (13) is a chamber body and barrel (2) inner wall sealing and long narrow and isolated with drum cavity (8) cavity that forms.

5. two-layer cylinder air-sucking type seeding apparatus according to claim 1 is characterized in that the pitch of chain (16) equates with cave, the kind cave distance of seedling dish (17).