CN103329666A - Push rod-mixing disc combination type bidirectional pneumatic precise seed sowing device for rice bud seed direct sowing - Google Patents

Abstract

The invention discloses a two-way pneumatic precision seed metering device for direct seeding of rice bud seeds combined with a push rod stirring plate, which comprises a seed box, a seed filling chamber, a casing, an air chamber, a seed metering shaft, and is arranged between the seed metering shaft and the second seed metering shaft. The first shaft sleeve between the first shaft hole, the second shaft sleeve arranged between the seed-discharging shaft and the second shaft hole, the transmission sprocket, the seed suction disc arranged on the seed-discharging shaft, and the first shaft hole The baffle plate between the side wall of the case and the seed guide tube arranged on the side wall of the case. The air chamber is equipped with a negative pressure area and a positive pressure blowing hole. The other end of the seeding shaft is fixed with a cam. The third shaft hole, the third shaft hole is provided with a push rod, one end of the push rod is provided with a flange, the other end of the push rod is provided with a positioning pin, the push rod is provided with a spring, the spring is located between the flange and the seed filling chamber, The cam mates with one end of the push rod. The invention has little damage to the rice buds, has good adaptability to the shape of the rice buds, can improve the fluidity of the rice buds in the seed box, realizes precise seeding, and reduces the waste of seeds.

Description

Push rod stirrer combination two-way pneumatic rice bud seed live broadcast precision seed metering device

technical field

The invention relates to the technical field of agricultural machinery, in particular to a two-way pneumatic rice bud direct-seeding precise metering device with a push rod and agitator.

Background technique

Direct seeding and transplanting are two different cultivation methods in rice cultivation. Rice direct seeding is a rice cultivation method that directly sows the sprouts after germination into the field with a seeder. It does not require procedures such as raising seedlings, pulling seedlings, and transplanting. It has the advantages of labor saving, labor saving, and seedling field saving. It is a light, The simplified low-cost new rice farming technology is welcomed by farmers.

The direct seeding of rice bud seeds generally requires that the seeds be soaked to accelerate germination to meet the standard of broken breasts and exposed white or bud length not exceeding 3mm. The fluidity of rice buds has a significant impact on the filling performance and movement rules of the buds in the metering device. Practice has shown that for the existing rice direct seeding device, it is difficult for rice buds to flow stably and smoothly from the seed box to the seed metering device due to factors such as rice variety, moisture content, and container shape, and due to the entanglement of the buds , it is difficult to achieve 2~3 grains per hole.

For the existing rice metering device, such as the Chinese invention patent with the application number 02126718.9, a special seed metering device for rice direct seeding machine is disclosed, which can adjust the size of the socket hole and sow the seeds by adjusting the screw and the hand wheel. It can be sown in both drill and hole; however, its structure is more complex, because it uses mechanical force to seriously damage the bud seeds, and the number of seeds per hole cannot be accurately controlled, making it difficult to achieve precise sowing. For example, the Chinese invention patent with the application number 200610016810.1 discloses a double-disc air-suction precision seed metering device, which can absorb a grain of rice buds through the two seeding discs, so that the number of grains per hole is 2; its disadvantage is that rice The fluidity of bud seeds in the seed box is poor, and it is easy to appear the phenomenon that the seed box is overhead, and the seed filling effect is poor. Since there is no positive air flow for seed blowing, it is easy to miss sowing, and the coefficient of variation of seeding is large. In addition, the common rice direct-seeding metering devices on the market have positive pressure blowing and negative pressure seed suction structures, which can solve the damage caused by the above-mentioned mechanical force filling method to bud seeds, but the above-mentioned sowing seeds per hole The number can not be accurately controlled, and the fluidity of rice bud seeds in the seed box is poor, and problems such as the overhead phenomenon of the seed box are prone to still exist.

Contents of the invention

The object of the present invention is to provide a two-way pneumatic direct-seeding precise seed metering device for rice bud seeds combined with a push rod and stirring plate. The fluidity of rice sprouts in the seed box can be improved, precision sowing can be realized, and the waste of seeds can be reduced.

In order to achieve this purpose, the push rod stirrer combined two-way pneumatic direct seeding metering device for rice buds designed by the present invention includes a seed box, a seed filling chamber communicated with the seed box, and a seed filling chamber communicated with the seed filling chamber. The casing of the first shaft hole, the air chamber fixed on one side of the casing and provided with the second shaft hole, the seeding shaft arranged in the first shaft hole and the second shaft hole, the seeding shaft and the first shaft hole The first shaft sleeve between the shaft holes, the second shaft sleeve arranged between the seed metering shaft and the second shaft hole, the drive sprocket fixed at one end of the seed metering shaft, arranged on the seed metering shaft and capable of The seed sucking plate rotated by the shaft, the baffle plate arranged between the first shaft hole and the side wall of the casing, the seed introducing tube arranged on the side wall of the casing, the seed sucking disk is located between the casing and the air chamber, The air chamber is provided with a negative pressure area and a positive pressure blowing hole, and is characterized in that it also includes a push rod with flanges and positioning pins at both ends, a spring sleeved on the push rod, and a cam matched with the flange. The cam is fixed on the other end of the seed-discharging shaft, and a third shaft hole is provided on both sides of the seed-filling chamber, the push rod is located in the third shaft hole, and the spring is located between the flange and the seed-filling chamber. between.

A plurality of seed stirring fans are evenly arranged on the disk surface of the seed suction plate along the circumferential direction, and the plurality of seed stirring fans are all located in the casing, wherein, one side of each seed stirring fan is provided with a plurality of seed stirring fans. type hole.

The two opposite inner sides of the seed box wall are provided with a plurality of hemispherical protrusions, and the other opposite inner sides are provided with a plurality of corrugated protrusions.

The casing is also provided with a seed filling port, the bottom surface of the seed filling chamber is set on an inclined plane, and a plurality of funnel-shaped seeding troughs are arranged side by side on the inside of the bottom surface, and the seeding ports of the funnel-shaped seeding troughs are connected with the The charging port is connected.

The outer edge of the casing and the outer edge of the air chamber are fixedly connected by a sealing gasket.

In the above technical solution, it also includes a flange on which the seed suction plate is fixed, and the inner hole of the flange is connected to the seeding shaft through a flat key and a keyway.

The width of the seeding port of the funnel-shaped seeding groove is twice the average length of rice buds.

The height of the funnel-shaped seeding groove is 2-4 mm.

The diameter of the seed suction hole is 1.2-1.8 mm.

The beneficial effects of the present invention are:

1) The present invention absorbs, carries and releases rice through the two-way airflow in the negative pressure area and the positive pressure blowing hole, the airflow has little damage to the rice buds, has good adaptability to the shape of the rice buds, has high survival rate of rice, and works efficiently High, saving a lot of manpower and material resources.

2) The seed box of the present invention uses the principle of bionics, by setting hemispherical convex hulls on the front and rear sides of the seed box, and corrugated convex lines on the left and right sides. A push rod is installed in the seed-filling chamber, and a funnel-shaped seeding trough is arranged on the bottom of the seed-filling chamber, which effectively solves the problems of difficult filling due to the entanglement of rice bud seeds and poor fluidity, and makes the seeds stable and smooth. to the seed meter.

3) The seed suction plate of the present invention is provided with a seed suction hole and a seed stirring fan. The seed stirring fan loosens the rice buds before filling the seeds, reduces the adhesion and friction between the buds, and is beneficial to the seed It is adsorbed on the hole of the seed suction plate and has a guiding effect to improve the seed filling performance of the seed meter.

4) The present invention can also be used to sow other precision hole-sowed crops, only need to replace the suction cups with different numbers of holes.

5) The present invention has a simple and compact structure, is easy to manufacture, has good working performance, is easy to observe, and is easy to maintain and adjust.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the present invention;

Fig. 2 is the front view structure schematic diagram of the present invention;

Fig. 3 is a schematic diagram of the gas chamber structure in the present invention;

Fig. 4 is the structural representation of casing among the present invention;

Fig. 5 is the structural representation of sealing gasket among the present invention;

Fig. 6 is the structural representation of seed sucker among the present invention;

Fig. 7 is the sectional structure schematic diagram of cam among the present invention;

Fig. 8 is a schematic structural view of the seed box in the present invention;

Fig. 9 is a schematic structural view of the left side in the seed box;

Fig. 10 is the structural representation of the front side in the seed box;

Fig. 11 is a schematic structural view of the filling chamber in the present invention;

Fig. 12 is a schematic structural view of the bottom surface of the seed filling chamber;

Among them, 1—air chamber, 1.1—second shaft hole, 2—second shaft sleeve, 3—transmission sprocket, 4—seed box, 4.1—hemispherical convex hull, 4.2—corrugated convex line, 5—filling seed Chamber, 5.1—third shaft hole, 5.2—funnel-shaped seeding groove, 5.3—bottom surface, 6—cam, 6.1—horizontal through hole, 6.2—first threaded hole, 7—first bushing, 8—seeding shaft , 8.1—second threaded hole, 9—housing, 9.1—first shaft hole, 9.2—seed filling port, 10—flange, 10.1—flat key, 10.2—keyway, 11—suction tray, 12—push rod , 12.1—flange, 12.2—spring, 12.3—locating pin, 13—seed introduction tube, 14—suction hole, 15—negative pressure area, 16—positive pressure blowing hole, 17—seed stirring fan, 18—seed suction Type hole, 19—seal washer, 20—baffle plate.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

The push rod stirrer combined two-way pneumatic rice bud seed direct seeding precision metering device designed by the present invention, as shown in Figures 1 to 12, includes a seed box 4, a seed filling chamber 5 communicated with the seed box 4, and a seed filling chamber 5 communicate with the case 9 with the first shaft hole 9.1, the air chamber 1 fixed on one side of the case 9 and provided with the second shaft hole 1.1, the air chamber 1 set in the first shaft hole 9.1 and the second shaft hole 1.1 The seeding shaft 8, the first shaft sleeve 7 arranged between the seeding shaft 8 and the first shaft hole 9.1, the second shaft sleeve 2 arranged between the seeding shaft 8 and the second shaft hole 1.1, fixed on the row The transmission sprocket 3 at one end of the seed shaft 8, the seed suction disk 11 that is arranged on the seed shaft 8 and can rotate with the seed shaft 8, and the baffle plate 20 that is arranged between the first shaft hole 9.1 and the side wall of the casing 9 1. The seed introduction tube 13 arranged on the side wall of the casing 9, the seed suction plate 11 is located between the casing 9 and the air chamber 1, and the air chamber 1 is provided with a negative pressure area 15 and a positive pressure blowing hole 16 , also includes a push rod 12 with flange 12.1 and positioning pin 12.3 at both ends, a spring 12.2 sleeved on the push rod 12, a cam 6 matched with the flange 12.1, and the cam 6 is fixed on the seed metering shaft 8 At the other end, both sides of the seed filling chamber 5 are provided with a third shaft hole 5.1, the push rod 12 is located in the third shaft hole 5.1, and the spring 12.2 is located between the flange 12.1 and the seed filling chamber 5. This becomes the present invention.

In the above technical solution, the cam 6 pushes the push rod 12 to move back and forth during the rotation process, thereby improving the fluidity of the rice sprouts. Above-mentioned baffle plate 20 is used for preventing that rice bud seed directly falls in the seed introduction pipe 13. Above-mentioned casing 9 is made by transparent plexiglass.

In the above technical solution, the first shaft sleeve 7, the second shaft sleeve 2 and the seeding shaft 8 are clearance fit, the first shaft sleeve 7 and the casing 9 are interference fit, and the second shaft sleeve 2 and the There is also an interference fit between the air chambers 1 .

In the above technical solution, the negative pressure zone 15 is a horseshoe-shaped negative pressure zone, which is a three-quarters arc, and the horseshoe-shaped negative pressure zone is connected to the suction hole 14, and the suction hole 14 is connected to the negative pressure of the fan. The ends are connected to form a negative air flow to adsorb the rice buds on the seed suction plate 11. The lower end of the air chamber 1 is a positive pressure blowing hole 16, and the positive pressure blowing hole 16 is connected with the positive pressure end of the fan. Bud seeds are blown in the seed tube 13 under the action of gravity and positive airflow, and negative airflow and positive airflow form a two-way airflow.

In the above technical solution, there are two bolt holes at the lower end of the air chamber 1, and the air chamber 1 is fixed on the seed meter test bench by bolts and nuts.

In the above technical solution, a plurality of seed stirring fans 17 are evenly arranged on the surface of the seed suction plate 11 along the circumferential direction, and the plurality of seed stirring fans 17 are all located in the casing 9, wherein one of each seed stirring fan 17 Sides are provided with a plurality of suction hole 18. 10 rows of seed-sucking holes 18 with equal spacing are evenly arranged in the circumferential direction of the above-mentioned seed-sucking tray 11, and each row has 3 seed-sucking holes 18 to ensure that the number of seeds per hole is 2 to 3, which is easy to achieve precise seeding and reduces the number of seeds. waste.

In the above technical solution, a plurality of hemispherical convex hulls 4.1 are provided on the opposite inner sides of the seed box 4, and a plurality of corrugated convex lines 4.2 are provided on the other opposite inner sides.

In the above technical solution, the casing 9 is also provided with a seed charging port 9.2, the bottom surface 5.3 of the seed charging chamber 5 is set on an inclined plane, and a plurality of funnel-shaped seeding grooves 5.2 are arranged side by side on the inner side of the bottom surface 5.3, and the funnel-shaped row The seed discharge port of the seed tank 5.2 communicates with the seed filling port 9.2. The top of above-mentioned seed filling chamber 5 bottom surface 5.3 is the large port of funnel-shaped seeding groove 5.2, and the bottom of seed-filling chamber 5 bottom surface 5.3 is the small port of funnel-shaped seeding groove 5.2, and the small port of funnel-shaped seeding groove 5.2 and The charging port 9.2 is connected. The flanging of the seed filling chamber 5 is fixedly connected to the casing 9 by bolts.

In the above technical solution, the outer edge of the casing 9 and the outer edge of the air chamber 1 are fixedly connected by the sealing gasket 19 . Thereby ensuring the airtightness of the horseshoe-shaped negative pressure zone.

In the above technical solution, it also includes a flange 10, on which the seed suction plate 11 is fixed, and the inner hole of the flange 10 is connected with the seeding shaft 8 through a flat key 10.1 and a keyway 10.2.

In the above technical solution, the width of the seeding port of the funnel-shaped seeding groove 5.2 is twice the average length of the rice buds.

In the above technical solution, the height of the funnel-shaped seeding groove 5.2 is 2-4 mm.

In the above technical solution, the diameter of the seed suction hole 18 is 1.2-1.8mm.

In the above-mentioned technical solution, the above-mentioned cam 6 is provided with a horizontal through hole 6.1 and a first threaded hole 6.2 of the vertical and horizontal through-holes 6.1, and the other end of the above-mentioned seeding shaft 8 is provided with a second threaded hole 8.1, and the seeding shaft 8 The other end is inserted into the horizontal through hole 6.1, and the first threaded hole 6.2 and the second threaded hole 8.1 are fixedly connected by bolts.

Working process of the present invention is:

The present invention is fixed on the seed meter test bench by bolts and nuts. Before the present invention starts to work, the rice sprouts through the vernalization are placed in the casing of the seed box 4. Due to gravity, the rice sprouts will be filled with The seed chamber 5 falls to the seed filling port 9.2 of the casing 9 and accumulates to form a seed layer; the drive sprocket 3 is driven by the motor to rotate, and the drive sprocket 3 drives the flange 10, the seed suction disc 11 and the cam 6 through the seeding shaft 8 relative to the air. Chamber 1 makes a counterclockwise circular motion; as the seed suction disc 11 rotates around the air chamber 1, the seed suction hole 18 on the seed suction disc 11 is sequentially connected with the horseshoe-shaped negative pressure area of the air chamber 1 and the positive pressure blowing hole 16 connected, so as to realize the conversion between negative pressure and positive pressure; the seed suction plate 11 makes a clockwise circular motion relative to the casing 9, and when the seed suction disk 11 turns to the filling port 9.2 of the casing 9, due to the horseshoe-shaped negative pressure Under the effect of negative pressure in the area, the rice buds will be sucked onto the seed-suction hole 18 of the seed-suction tray 11. With the rotation of the seed-suction tray 11, the stirring fan 17 on the seed-suction tray 11 will continuously push the rice buds The seeds are loosened and play a guiding role, so that the rice buds are smoothly adsorbed to the seed-absorbing hole 18 of the seed-suction plate 11 to complete the seed-filling process; The rice buds on the hole 18 break away from the seed layer and pass through the horseshoe-shaped negative pressure zone. When the rice buds adsorbed on the seed-sucking hole 18 break away from the negative pressure zone, the rice buds will rely on their own gravity due to the loss of the negative pressure effect. The effect of the positive pressure air flow at the positive pressure blowing hole 16 falls into the seed guide tube 13, and the rice buds are discharged through the seed guide tube 13 and enter the next working cycle; the seeding rate can be adjusted by replacing the suction tube with different numbers Seed sucker 11 of type hole 18 realizes.

During the working process, since the seed box 4 is provided with a hemispherical convex hull 4.1 and a corrugated convex strip 4.2, and the seeding shaft 8 drives the cam 6 to rotate, through the action of the cam 6 and the spring 12.2, the push rod 12 will The linear movement back and forth in the seed-filling chamber 5 improves the fluidity of the rice buds, and the rice buds flow smoothly into the funnel-shaped seeding groove 5.2 of the seed-filling chamber 5 with the assistance of the push rod 12, and the funnel-shaped seeding Groove 5.2 plays the role of shunting the rice buds, which can further improve the fluidity of rice buds, so that the rice buds can flow stably and smoothly from the seed box 4 to the seed filling port 9.2 of the casing 9, thereby improving the drainage. Seed filling performance.

Claims (9)

1. A two-way pneumatic rice bud direct-seeding precision metering device with a combination of push rod and stirring plate, which includes a seed box (4), a seed filling chamber (5) connected to the seed box (4), and a seed filling chamber ( 5) The case (9) connected with and opened with the first shaft hole (9.1), the air chamber (1) fixed on one side of the case (9) and provided with the second shaft hole (1.1), set in the first The seeding shaft (8) in the shaft hole (9.1) and the second shaft hole (1.1), the first bushing (7) arranged between the seeding shaft (8) and the first shaft hole (9.1), the setting The second bushing (2) between the seeding shaft (8) and the second shaft hole (1.1), the drive sprocket (3) fixed at one end of the seeding shaft (8), and the ) and the seed suction disc (11) that can rotate with the seeding shaft (8), the baffle (20) that is arranged between the first shaft hole (9.1) and the side wall of the casing (9), and the (9) The seed introduction tube (13) on the side wall, the seed suction plate (11) is located between the casing (9) and the air chamber (1), and the air chamber (1) is provided with a negative pressure area (15) and the positive pressure blowing hole (16), which are characterized in that: it also includes a push rod (12) with flanges (12.1) and positioning pins (12.3) at both ends, and a push rod (12) sleeved on the push rod (12). The spring (12.2), the cam (6) matched with the flange (12.1), the cam (6) is fixed on the other end of the seeding shaft (8), and the two sides of the seed filling chamber (5) are provided with There is a third shaft hole (5.1), the push rod (12) is located in the third shaft hole (5.1), and the spring (12.2) is located between the flange (12.1) and the seed filling chamber (5). 2. According to claim 1, the two-way pneumatic rice bud direct-seeding precise metering device with push rod and stirring plate is characterized in that: the surface of the seed suction plate (11) is uniformly arranged with a plurality of Seed stirring fan (17), the multiple seed stirring fans (17) are all located in the casing (9), wherein, one side of each seed stirring fan (17) is provided with a plurality of seed suction holes (18 ). 3. According to claim 1 or 2, the pusher stirrer combined two-way pneumatic rice bud seed direct seeding precision metering device is characterized in that: the two inner sides of the seed box (4) opposite to the box wall are equipped with multiple A hemispherical convex hull (4.1), and a plurality of corrugated convex lines (4.2) are provided on the opposite inner sides of the other. 4. According to claim 1 or 2, the two-way pneumatic rice bud direct-seeding precise metering device with push rod and stirring plate is characterized in that: the casing (9) is also provided with a seed filling port (9.2) , the bottom surface (5.3) of the seed filling chamber (5) is set on a slope, and a plurality of funnel-shaped seeding grooves (5.2) are arranged side by side on the inner side of the bottom surface (5.3), and the funnel-shaped seeding grooves (5.2) The seeding port communicates with the filling port (9.2). 5. According to claim 1 or 2, the combined two-way pneumatic rice bud direct-seeding precision metering device with push rod and stirring plate is characterized in that: the outer edge of the casing (9) and the outer edge of the air chamber (1) The edge is fixedly connected by a sealing washer (19). 6. According to claim 1 or 2, the combined two-way pneumatic rice bud direct-seeding precision metering device with push rod and stirring plate is characterized in that it also includes a flange (10), and the seed suction plate (11) It is fixed on the flange (10), and the inner hole of the flange (10) is connected with the seeding shaft (8) through a flat key (10.1) and a keyway (10.2). 7. The push rod stirring plate combined two-way pneumatic rice bud direct seeding precision seed metering device according to claim 4, characterized in that: the width of the seeding port of the funnel-shaped seeding groove (5.2) is rice bud Twice the average length of species. 8. The two-way pneumatic precision seed metering device for direct seeding of rice bud seeds according to claim 7, characterized in that: the height of the funnel-shaped seed metering trough (5.2) is 2-4 mm. 9. The push rod and agitator combined two-way pneumatic rice bud seed direct seeding precision metering device according to claim 2, characterized in that: the diameter of the seed suction hole (18) is 1.2-1.8 mm.

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