CN102217446A - Closed precise seed sowing mechanism - Google Patents
Closed precise seed sowing mechanism Download PDFInfo
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- CN102217446A CN102217446A CN2011101553821A CN201110155382A CN102217446A CN 102217446 A CN102217446 A CN 102217446A CN 2011101553821 A CN2011101553821 A CN 2011101553821A CN 201110155382 A CN201110155382 A CN 201110155382A CN 102217446 A CN102217446 A CN 102217446A
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- rotating shaft
- sucker
- hollow rotating
- induced duct
- vacuum chamber
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Abstract
The invention relates to parts of a farming machine, namely a closed precise seed sowing mechanism. The seed sowing mechanism comprises a vacuum room and a suction cup, wherein the vacuum room is communicated with an induced air pipe of a fan, and the suction cup is provided with a plurality of suction holes. The seed sowing mechanism is characterized in that: the vacuum room(1) is fixedly connected with the suction cup(2), and the side surface of the suction cup(2) is provided with a fixed choke plate(15) which is in sliding contact with the suction cup(2); the choke plate(15) is big enough to cover at least one suction hole(3); one side of the vacuum room(1) is fixedly connected with a hollow rotary shaft(4), the hollow rotary shaft(4) is provided with a transmission wheel(13), and the induced air pipe(6) of the fan is in sliding connection with the hollow rotary shaft(4); the hollow rotary shaft(4) is provided with air exhaust holes(17) communicated with the induced air pipe(6). The seed sowing mechanism has the advantages that: because the vacuum room and the suction cup are connected into one body, no relative motion occurs, so that the problem of air leakage on the connectors of the suction cup and the vacuum room, the structure is simplified, the precision requirement is lowered, the utilization rate of negative pressure is greatly improved, the power consumption is reduced, the service life is prolonged, the operational performance and the scope of application of the air suction type seed sowing mechanism are improved, and the revolutionary change is made to the conventional precise seed sowing technology.
Description
Technical field
The present invention relates to a kind of farm machinery, promptly a kind of airtight precise seeder.
Background technology
Seeding unit is the core component of sower, and at present, the kind of seeding unit is a lot, is example with the sower of dry field farming things such as corn, and its seeding unit just has grooved pulley type, indent type, air-sucking type etc.Grooved pulley type and cell-seed distributor are at wheel disc arranged outside groove or recess, and wheel disc handle in rotation enters under the seed row of groove nest.Air-suction seeding unit then is the negative pressure that causes the sucker inboard by blower fan, and sucker is by inhaling the seed in the absorption outside, hole, and seed fell naturally after the suction hole turned over negative pressuren zone.Groove or recess seeding unit are simple in structure, but amount of seed metering is inaccurate, the waste seed, but also to utilize scraper plate class part to limit entering of seed, the ratio of planting the fragmentation of subcard wound is higher.Air-suction seeding unit will be equipped with blower fan, more complicated, but the amount of seed metering and kind of the position that falls are all very accurate, are called precise seeder, and can card type, economize kind of a remarkable benefit, be subjected to peasant's welcome deeply., because self structure, existing air-suction seeding unit exists drawback such as leak out, rapid wear, power consumption are big.Air-suction seeding unit has a container-like vacuum chamber that links to each other with blower fan, be covered with the sucker of rotation on the opening of vacuum chamber, the negative-pressure adsorption seed of hole by vacuum chamber inhaled in a plurality of suctions hole that is uniformly distributed along the circumference above the sucker, goes in the vacuum chamber outer wall recess and breaks away from negative pressure and put down seed.Because sucker rotates, vacuum chamber is motionless, and the inboard opening with vacuum chamber of sucker must seal.Obviously, this sealing is very difficult.The reason of difficult sealing mainly contains 2 points: the one, and sucker and vacuum chamber port are not suitable for installing seal, can only lean on flat seal, and required precision is very high, and the path of Pei Heing is longer in addition, and precision is difficult to reach.The 2nd, work under bad environment, impurity is a lot, suction function in addition, impurity very easily sucks the gap, causes wearing and tearing, destroys sealing.Sealing bad result is accelerated wear test and increase power consumption, just increases operating cost.To this, both domestic and externally take much count of, and release multinomial counter-measure with the provisional capital., everybody notice all concentrates on two aspects at present: the one, and the machining accuracy of raising sucker and vacuum chamber port, the 2nd, dwindle vacuum chamber as far as possible.According to interrelated data record, vacuum chamber has been made semicircle or crescent by the U.S., promotes significantly all giving aspect material, intensity and the machining accuracy in addition.Obtained some effects though do like this, strengthened cost, be not suitable for the condition of developing country, particularly on all very limited middle-size and small-size sower of cost and mating power, above-mentioned measure is difficult to carry out more.
Summary of the invention
It is few to the purpose of this invention is to provide a kind of negative pressure loss, and operating cost is low, and is simple in structure, cheap, non-damageable precise seeder.
Above-mentioned purpose is realized by following technical scheme: develop a kind of airtight precise seeder, comprise vacuum chamber and sucker, vacuum chamber communicates with the induced duct of blower fan, and the drum heart has a plurality of suctions hole on the sucker.Be characterized in: said vacuum chamber is connected mutually with sucker, be provided with fixing choke plate with the sucker sliding-contact in the side of sucker, the size of choke plate can cover one at least and inhale the hole, at the vacuum chamber one side hollow rotating shaft that is connected, drive is housed on the hollow rotating shaft, the induced duct and the hollow rotating shaft of blower fan are slidingly connected, and hollow rotating shaft is provided with the vent that communicates with induced duct.
One end of said induced duct is provided with sleeve pipe, casing pipe sleeve is in the outside of hollow rotating shaft, bearing and seal are housed between sleeve pipe and the hollow rotating shaft, the sleeve pipe two ends are respectively equipped with internal gland and outer gland, the vent of hollow rotating shaft is positioned at the sleeve pipe middle part and communicates with induced duct, a dead lever is inserted in the hollow rotating shaft the inside, the outer end of dead lever is passed hollow rotating shaft and is connected in external pressure and covers, the inner of dead lever enters vacuum chamber and is connected an elastic arm, a slice choke plate is equipped with in the elastic arm lower end, choke plate relative with place, suction hole circumference on the sucker and with the sliding-contact of sucker medial surface.
Be connected mutually by screw between said sucker and the vacuum chamber port.
Have on the said vacuum chamber port and the friction tight step trough of sucker outer rim, have semicircle groove on sucker outer rim and the ladder cell wall, two grooves constitute pressuring line groove relatively, and other has the potted line that matches with pressuring line groove to be installed in the pressuring line groove.
Said choke plate is located at the outside of vacuum chamber, and is relative with place, suction hole circumference on the sucker, and with the sliding-contact of sucker lateral surface.
Said induced duct inserts hollow rotating shaft, between induced duct and the hollow rotating shaft for being slidingly matched.
Said induced duct inserts hollow rotating shaft, and bearing and seal are housed between induced duct and the hollow rotating shaft.
Said hollow rotating shaft inserts induced duct, between hollow rotating shaft and the induced duct for being slidingly matched.
Said hollow rotating shaft inserts induced duct, and bearing and seal are housed between hollow rotating shaft and the induced duct.
The invention has the beneficial effects as follows: because vacuum chamber and sucker are connected as a single entity, there is not relative motion, and between vacuum chamber rotating shaft that moves on to easy sealing behind the graft union of relative motion and the induced duct, thereby solved the difficult problem that sucker and vacuum chamber port leak out cleverly, and simplify the structure, reduced required precision, increased substantially the negative pressure availability, reduced power consumption, prolonged service life, improved the transaction capabilities and the scope of application of air-suction seeding unit, made existing smart amount seeding technology that revolutionary variation take place.
Description of drawings
Fig. 1 is the front view of first kind of embodiment;
Fig. 2 is the left view of first kind of embodiment;
Fig. 3 is the enlarged front view of the parts vacuum chamber of first kind of embodiment;
Fig. 4 is the local amplification decomposition figure of the parts vacuum chamber of first kind of embodiment;
Fig. 5 is the assembling front view of the parts gland of first kind of embodiment;
Fig. 6 is the assembling left view of the parts gland of first kind of embodiment;
Fig. 7 is the assembling front view of the parts choke plate of first kind of embodiment;
Fig. 8 is the assembling left view of the parts choke plate of first kind of embodiment;
Fig. 9 is the working state figure of first kind of embodiment;
Figure 10 is the installation diagram of second kind of embodiment;
Figure 11 is the installation diagram of the third embodiment;
Figure 12 is the installation diagram of the 4th kind of embodiment.
Among the figure as seen: vacuum chamber 1, sucker 2 is inhaled hole 3, hollow rotating shaft 4, internal gland 5, induced duct 6, bearing 7, seal 8, outer gland 9, dead lever 10, connecting rod 11, sleeve pipe 12, drive 13, elastic arm 14, choke plate 15, potted line 16, vent 17, step trough 18, pressuring line groove 19, seed-box 20, seed 21, sealing ring 22.
Embodiment
The total design of the present invention is that the sucker (2) and the vacuum chamber (1) of seeding unit is connected as a single entity, and avoids relative motion, thereby solves the problem of leaking out between sucker (2) and vacuum chamber (1) port.Introduce four embodiment below in conjunction with accompanying drawing:
First kind of embodiment: as shown in Figure 1, 2, this airtight precise seeder also has a box-like vacuum chamber (1), and in conjunction with Fig. 3 as seen, vacuum chamber (1) front port and sucker (2) are connected as a whole, and a plurality of suctions hole (3) is uniformly distributed along the circumference on the sucker (2).At the opposite side of vacuum chamber (1) hollow rotating shaft (4) that is connected, hollow rotating shaft (4) outside is with the sleeve pipe (12) that induced duct (6) end picks out, between sleeve pipe (12) and the hollow rotating shaft (4), bearing (7) and seal (8) are housed, and seal (8) can adopt sealing material and packing retaining ring.Hollow rotating shaft (4) has a plurality of vents (17) with respect to the position of induced duct (6), and vent (17) communicates with induced duct (6).The drive (13) that is connected in the outside of hollow rotating shaft (4), this drive (13) generally adopts sprocket wheel, and the power output sprocket by chain and engine interrelates.Fig. 3,4 has also introduced the mode that is connected of a kind of sucker (2) and vacuum chamber (1) port, and port is provided with step trough (18), and sucker (2) snaps in step trough (18) just.In addition on the outer rim of sucker (2) and step trough (18) inwall, have the pressuring line groove that section is a semicircle shape (19), the potted line (16) that the steel wire that a diameter is matched with pressuring line groove is made is put into the pressuring line groove ((19) of sucker (2), and the bending of an end of potted line (16) hung on the sucker (2), sucker (2) is put into step trough (18) rotation, potted line (16) can be screwed in the pressuring line groove (19), this mode is connected firmly, can not leak gas, need only backward rotation sucker (2) during dismounting, potted line (16) can screw out successively.In conjunction with Fig. 5,6 as seen, sleeve pipe (12) the inner is provided with internal gland (5), and the outer end is provided with outer gland (9).Inside and outside gland (5 and 9) is cascaded by connecting rod (11).In conjunction with Fig. 7,8 as seen, along axial line a dead lever (10) is housed in hollow rotating shaft (4) the inside, dead lever (10) outer end is passed hollow rotating shaft (4) and is connected mutually with outer gland (9), the inner enters vacuum chamber (1) and an elastic arm (14) that stretches downwards is housed, a slice choke plate (15) is equipped with in elastic arm (14) lower end, choke plate (15) is fan-shaped, with sucker (2) sliding-contact, and can cover 1-5 suction hole (3).Owing between choke plate (15) and the sucker (2) certain friction is arranged, recommendation employing wearability graphite material is preferably made.
In conjunction with Fig. 9 as seen, vacuum chamber (1) and sucker (2) can rotate under the drive of drive (13) together with hollow rotating shaft (4), and induced duct (6), sleeve pipe (12), the support that constituted hollow rotating shaft (4) together with the gland (5 and 9) and the bearing (7) at two ends.The outside of sucker (2) is seed-box (20), and the seed of the inside (21) hides most of hole (3) of inhaling just.Because sucker (2) is an integral body with vacuum chamber (1), can not leak out, and can save a large amount of power, and can reduce by 30% to the diameter of inhaling hole (3), the simple grain adsorption rate can reach more than 95%, economizes kind of an effect highly significant.During work, start air-introduced machine, higher vacuum appears in vacuum chamber (1) immediately, seed (21) promptly can be adsorbed on the suction hole (3) of sucker (2), rotation with sucker (2), the seed that is adsorbed (21) is raised to peak and has broken away from seed-box (20) seed constructional surface, the unnecessary seed seed-box that falls back, inhale upward general only suction the in hole (3) for one a seed is arranged, change downwards again, promptly arrive and choke plate (15) opposite position, this moment, negative pressure was blocked, and seed (21) leans on gravity fall immediately in soil.
Second kind of embodiment: as shown in figure 10, the structure that this airtight precise seeder and first kind of embodiment introduce is basic identical, and just choke plate (15) but has installed to the outside of vacuum chamber (1) not in vacuum chamber (1), is pressed in the outside of sucker (2).Certainly, the mode of installing is a lot, and the choke plate that exemplifies here (15) also is the lower end that is contained in elastic arm (14), and elastic arm (14) is fixed on the frame, the elastic arm of introducing among the figure (14) is connected below the seed-box (20), also belongs in the scope of frame.This structure can be omitted the dead lever (10) of hollow rotating shaft (4) the inside, manufacturing and assembling are all simpler, but operation principle is slightly different, choke plate (15) will be pushed seed (21) open and then block suction hole (2) earlier, the outer rim of inhaling hole (2) can not be too sharp, should adopt the chamfering or the conical surface, hinder seed otherwise can block.
The third embodiment: as shown in figure 11, what this airtight precise seeder was different with precedent is: the direction unanimity of the direction of induced duct (6) and hollow rotating shaft (4), and the vent (17) on the hollow rotating shaft (4) is established at one end, and structure is further simplified.
The 4th kind of embodiment: as shown in figure 12, induced duct (6) inserts hollow rotating shaft (4), and the internal diameter of the external diameter of induced duct (6) and hollow rotating shaft (4) is for being slidingly matched, and the gap is very little, and between can fill less amount of lubrication oil, have certain sealing property.It is darker that induced duct (6) inserts, and front end is near sucker (2), after air-introduced machine starts, the air of preferential extracting vacuum chamber (1), though induced duct (6) and hollow rotating shaft (4) between sealing is relatively poor also has not big harm.Certainly, for more sure, can be as shown in figure 11, install additional between induced duct (6) or several roads sealing rings (22) at hollow rotating shaft (4), this sealing ring can be soft malthoid, also can be the snap ring similar to piston ring, annular groove is left in the outside that is preferably in induced duct (6), and each snap ring placed in the groove, snap ring is pressed close to the hollow rotating shaft inboard by tension force, can form good sealing.
Certainly, this example can also be spreaded to a kind of equivalent configurations: promptly hollow rotating shaft (4) is inserted induced duct (6), other structures are constant, also have same effect.
Claims (9)
1. airtight precise seeder, comprise vacuum chamber (1) and sucker (2), vacuum chamber (1) communicates with the induced duct (6) of blower fan, have a plurality of suctions hole (3) on the sucker (2), it is characterized in that: said vacuum chamber (1) is connected mutually with sucker (2), be provided with fixing choke plate (15) with sucker (2) sliding-contact in the side of sucker (2), the size of choke plate (15) can cover one at least and inhale hole (3), at vacuum chamber (1) the one side hollow rotating shaft (4) that is connected, drive (13) is housed on the hollow rotating shaft (4), the induced duct of blower fan (6) is slidingly connected with hollow rotating shaft (4), and hollow rotating shaft (4) is provided with the vent (17) that communicates with induced duct (6).
2. airtight precise seeder according to claim 1, it is characterized in that: an end of said induced duct (6) is provided with sleeve pipe (12), sleeve pipe (12) is enclosed within the outside of hollow rotating shaft (4), bearing (7) and seal (8) are housed between sleeve pipe (12) and the hollow rotating shaft (4), sleeve pipe (12) two ends are respectively equipped with internal gland (5) and outer gland (9), the vent (17) of hollow rotating shaft (4) is positioned at sleeve pipe (12) middle part and communicates with induced duct (6), a dead lever (10) is inserted in hollow rotating shaft (4) the inside, the outer end of dead lever (10) is passed hollow rotating shaft (4) and is connected on the outer gland (9), the inner of dead lever (10) enters vacuum chamber (1) and the elastic arm (14) that is connected, said choke plate (15) is contained in the end of elastic arm (14), choke plate (15) relative with place, suction hole (3) circumference on the sucker (2) and with sucker (2) medial surface sliding-contact.
3. airtight precise seeder according to claim 1 is characterized in that: be connected mutually by screw between said sucker (2) and vacuum chamber (1) port.
4. airtight precise seeder according to claim 1, it is characterized in that: have on said vacuum chamber (1) port and the friction tight step trough of sucker (2) outer rim (18), have semicircle groove on sucker (2) outer rim and step trough (18) wall, two grooves constitute pressuring line groove (19) relatively, other has the potted line (16) that matches with pressuring line groove (19), is installed in the pressuring line groove (19).
5. airtight precise seeder according to claim 1 is characterized in that: said choke plate (15) is located at the outside of vacuum chamber (1), and is relative with place, suction hole (3) circumference on the sucker (2), and with sucker (2) lateral surface sliding-contact.
6. airtight precise seeder according to claim 1 is characterized in that: said induced duct (6) inserts hollow rotating shaft (4), between induced duct (6) and the hollow rotating shaft (4) for being slidingly matched.
7. airtight precise seeder according to claim 6 is characterized in that: said being slidingly matched is meant between induced duct (6) and the hollow rotating shaft (4) bearing and seal is housed.
8. airtight precise seeder according to claim 1 is characterized in that: said hollow rotating shaft (4) inserts induced duct (6), between hollow rotating shaft (4) and the induced duct (6) for being slidingly matched.
9. airtight precise seeder according to claim 8 is characterized in that: said being slidingly matched is meant between induced duct (6) and the hollow rotating shaft (4) bearing and seal is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110155382 CN102217446B (en) | 2011-06-10 | 2011-06-10 | Closed precise seed sowing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110155382 CN102217446B (en) | 2011-06-10 | 2011-06-10 | Closed precise seed sowing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102217446A true CN102217446A (en) | 2011-10-19 |
| CN102217446B CN102217446B (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110155382 Expired - Fee Related CN102217446B (en) | 2011-06-10 | 2011-06-10 | Closed precise seed sowing mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN102217446B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584741A (en) * | 2015-02-10 | 2015-05-06 | 王飞 | Vacuum seed picking and sowing device |
| CN107771455A (en) * | 2017-11-30 | 2018-03-09 | 天津泉昊农业机械股份有限公司 | The Pneumatic drum device of seed belt braider |
| CN110073775A (en) * | 2019-05-29 | 2019-08-02 | 吉林大学 | Diplopore aspirated-air type soya corn general-purpose energy-saving feed mechanism for seed |
| CN110692323A (en) * | 2019-11-07 | 2020-01-17 | 青岛农业大学 | Air suction seed metering device and air suction dibbler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1113476A (en) * | 1964-06-25 | 1968-05-15 | Massey Ferguson Inc | Improvements in seed planters |
| CN2493005Y (en) * | 2001-08-24 | 2002-05-29 | 杨宛章 | Improved vertical disc air suction type seeder |
| CN201069906Y (en) * | 2007-08-22 | 2008-06-11 | 陈恒 | Air suction type film accurate hole sowing device |
| CN201430770Y (en) * | 2009-06-25 | 2010-03-31 | 顾春洪 | Improved air suction seed sowing device |
| CN202121941U (en) * | 2011-06-10 | 2012-01-25 | 杨生 | Hermetic precise seed metering device |
-
2011
- 2011-06-10 CN CN 201110155382 patent/CN102217446B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1113476A (en) * | 1964-06-25 | 1968-05-15 | Massey Ferguson Inc | Improvements in seed planters |
| CN2493005Y (en) * | 2001-08-24 | 2002-05-29 | 杨宛章 | Improved vertical disc air suction type seeder |
| CN201069906Y (en) * | 2007-08-22 | 2008-06-11 | 陈恒 | Air suction type film accurate hole sowing device |
| CN201430770Y (en) * | 2009-06-25 | 2010-03-31 | 顾春洪 | Improved air suction seed sowing device |
| CN202121941U (en) * | 2011-06-10 | 2012-01-25 | 杨生 | Hermetic precise seed metering device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584741A (en) * | 2015-02-10 | 2015-05-06 | 王飞 | Vacuum seed picking and sowing device |
| CN104584741B (en) * | 2015-02-10 | 2017-05-24 | 王飞 | Vacuum seed picking and sowing device |
| CN107771455A (en) * | 2017-11-30 | 2018-03-09 | 天津泉昊农业机械股份有限公司 | The Pneumatic drum device of seed belt braider |
| CN107771455B (en) * | 2017-11-30 | 2023-01-20 | 连金玉 | Air suction roller device of seed tape knitting machine |
| CN110073775A (en) * | 2019-05-29 | 2019-08-02 | 吉林大学 | Diplopore aspirated-air type soya corn general-purpose energy-saving feed mechanism for seed |
| CN110073775B (en) * | 2019-05-29 | 2021-09-07 | 吉林大学 | Double-hole air-suction type general energy-saving seed sowing device for soybean and corn |
| CN110692323A (en) * | 2019-11-07 | 2020-01-17 | 青岛农业大学 | Air suction seed metering device and air suction dibbler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102217446B (en) | 2013-11-06 |
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