CN109287211B - Wheat pneumatic acceleration seeding device - Google Patents

Abstract

The invention belongs to the technical field of agricultural machinery, and particularly relates to a pneumatic accelerating wheat jetting and sowing device. The seed-sowing device comprises a seed-sowing mechanism, a pneumatic mechanism and a seed-sowing pipe (8), wherein wheat discharged by the seed-sowing mechanism is injected into soil at an accelerated speed through the seed-sowing pipe (8) under the action of the pneumatic mechanism, the device adopts non-contact high-pressure pneumatic continuous accelerated seed-sowing, wheat seeds are injected into the soil after being accelerated by high-pressure airflow, a sowing part is not in contact with the soil to further avoid adhesion, the disturbance and the operation resistance to the soil are reduced, and the device is suitable for wheat no-tillage sowing operation under the condition that no straw is covered in a rice and wheat crop rotation area.

Description

Wheat pneumatic acceleration seeding device

technical field

The invention belongs to the technical field of agricultural machinery, and in particular relates to a wheat pneumatic acceleration shot-seeding device.

Background technique

Wheat is the second largest food crop in China. The middle and lower reaches of the Yangtze River are the main food production bases in my country. With abundant light and heat resources, abundant rainfall, and high groundwater level, the growth of wheat is less restricted by water resources. It is the region with the greatest potential for increasing wheat production in China. . Rice-wheat rotation is the main planting pattern in this area. As the rice-wheat rotation is used as a flood-dry rotation, the soil texture is sticky and wet after the previous rice harvest, and there is a lot of rainfall in the area before the subsequent wheat sowing. When the tool parts are in contact with the soil, serious soil adhesion and increased operation resistance are caused, which brings serious difficulties to the mechanized no-tillage sowing operation of wheat in the rice-wheat rotation area.

The soil moisture in rice stubble fields is complex, and foreign large-scale wheat mechanized seeding equipment cannot meet the needs of small plots and wet clay soils. Rotary tillage and sowing type of rice stubble and wheat sowing machines are the main ones. Before sowing, rotary tillage has large tillage resistance, high soil adhesion and high energy consumption, and the soil thrown away after rotary tillage cutting is easy to stick and form lumps, resulting in wheat spreading in sticky areas. The agglomerated soil surface causes dry seeds and weak seedlings after sowing, which increases the cost of sowing operations and causes poor sowing quality.

Therefore, in the rice-wheat rotation area in my country, there is an urgent need for a wheat seeding device suitable for a sticky and wet soil environment, with a simple structure, low soil adhesion and low working resistance.

SUMMARY OF THE INVENTION

In view of the above-mentioned technical problems, the object of the present invention is to provide a kind of wheat pneumatic acceleration shooting and sowing device, which adopts non-contact sowing, and the wheat seeds are shot into the soil after being accelerated by high-pressure airflow, and the sowing parts are not in contact with the soil to avoid adhesion phenomenon .

In order to achieve the above object, the present invention provides the following technical solutions:

A wheat pneumatic acceleration shooting and seeding device, comprising a seeding mechanism, a pneumatic mechanism and a shooting and seeding tube 8;

The seed metering mechanism includes a seed box 1, a motor 2 and a seed meter 3; the seed meter 3 is fixedly connected to the lower seed opening of the seed box 1, and the motor 2 transmits power to the seed meter 3;

The pneumatic mechanism includes an air compression tank 9, a pressure-resistant air pipe 10 and a negative pressure air tee 7;

The negative pressure air tee 7 includes an air-tightly connected air nozzle 701, a seeding pipe 704 and a mixing pipe 703;

The air outlet end of the air nozzle 701 is inserted into the middle of the mixing pipe 703 from the top of the mixing pipe 703; The lower edge 705 of the port at the seed end is higher than the edge 702 of the port at the outlet end of the air nozzle 701;

One end of the pressure-resistant air pipe 10 is communicated with the air outlet end of the air compression tank 9, and the other end is communicated with the air inlet end of the air nozzle 701 of the negative pressure air tee 7; The pipe communicates with the seeding end of the seeding pipe 704 ; the bottom end of the mixing pipe 703 is airtightly connected with the seeding pipe 8 .

The seed feeding pipe includes a first seed feeding pipe 4, a double-pass pipe 5 and a second seed feeding pipe 6 which are connected in sequence; the double-pass pipe 5 is in an "L" shape.

The acute angle α between the seeding tube 704 and the mixing tube 703 is 20°˜70°.

Preferably, the acute angle α between the seeding tube 704 and the mixing tube 703 is 35°.

The wall thickness of the gas nozzle 701, the seeding pipe 704 and the mixing pipe 703 is 2-6 mm; the inner diameter of the gas nozzle 701 is 5-20 mm; the length of the gas nozzle 701 is 70-120 mm; The inner diameter is larger than that of the gas nozzle 701 by 6-15 mm; the length of the mixing pipe 703 is 40-60 mm.

Preferably, the wall thickness of the gas nozzle 701, the seeding pipe 704 and the mixing pipe 703 is 3 mm; the inner diameter of the gas nozzle 701 is 6 mm; the length of the gas nozzle 701 is 85 mm; the inner diameter of the mixing pipe 703 is larger than that of the gas nozzle 701 The inner diameter is 10mm larger; the length of the mixing tube 703 is 50mm.

The seeding tube 8 includes an air cone 801 and an accelerating tube 802 in sequence from top to bottom; the air cone 801 is in the shape of a truncated cone with a large upper end and a small lower end, and the upper end of the air cone 801 is airtightly sleeved on the bottom of the mixing pipe 703 end.

The taper of the gas cone 801 is 0.25-0.5; the length of the acceleration tube 802 is 300mm-1500mm.

Preferably, the taper of the gas cone 801 is 0.3; the length of the acceleration tube 802 is 600 mm.

Compared with the prior art, the beneficial effects of the present invention are:

The invention adopts non-contact high-pressure pneumatic force to continuously accelerate the sowing and seeding, the working parts are not in contact with the soil, thus avoiding the occurrence of adhesion, and reducing the disturbance to the soil and the working resistance, and the device is suitable for the rice-wheat rotation area without straw mulching Cases of no-till sowing of wheat.

Description of drawings

Fig. 1 is the structural representation of the wheat pneumatic acceleration shot-seeding device of the present invention;

FIG. 2 is a partial assembly sectional view of the negative pressure gas tee 7 and the seeding tube 8 in FIG. 1 .

The reference numbers are:

1 box 2 motors

201 conveyor belt 3 seed metering device

4 The first seed tube 5 The double-pass tube

6 Second seed pipe 7 Negative pressure air tee

701 air nozzle 702 air outlet port edge

703 mixing tube 704 seed tube

705 seed end port lower edge 8 radio tube

801 Air Cone 802 Accelerator Tube

9 Air compression tank 10 Pressure resistant air pipe

α is the acute angle between the seeding tube 704 and the mixing tube 703

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and embodiments.

As shown in FIG. 1, a wheat pneumatic accelerated seeding device includes a seeding mechanism, a pneumatic mechanism and a seeding pipe 8. The wheat discharged from the seeding mechanism is accelerated and injected into the soil through the spraying pipe 8 under the action of the pneumatic mechanism. The device uses non-contact high-pressure air to continuously accelerate the seeding, and the wheat seeds are accelerated into the soil after being accelerated by the high-pressure airflow, and the sowing parts do not come into contact with the soil to avoid adhesion.

The seed metering mechanism includes a seed box 1 , a motor 2 and a seed meter 3 . The seed metering device 3 is fixedly connected to the lower seeding port of the seed box 1 , and the motor 2 transmits power to the seed metering device 3 through the conveyor belt 201 .

The pneumatic mechanism includes an air compression tank 9 , a pressure-resistant air pipe 10 and a negative pressure air tee 7 .

As shown in FIG. 2 , the negative pressure gas tee 7 includes a gas nozzle 701 , a seeding pipe 704 and a mixing pipe 703 which are airtightly connected.

The gas outlet end of the gas nozzle 701 is inserted into the middle of the mixing pipe 703 from the top of the mixing pipe 703; the seed outlet end of the seed feeding pipe 704 is communicated with the mixing pipe 703 by the upper side wall of the mixing pipe 703; The lower edge 705 of the seed end port is higher than the port edge 702 of the air outlet end of the air nozzle 701 to ensure that the high pressure gas is input through the air nozzle 701 to form a negative pressure in the mixing pipe 703 to facilitate the inhalation of the seed particles and the mixing of the airflow.

The acute included angle α between the seeding tube 704 and the mixing tube 703 is 20° to 70°, preferably 35°.

One end of the pressure-resistant air pipe 10 is communicated with the air outlet end of the air compression tank 9 , and the other end is communicated with the air inlet end of the air nozzle 701 of the negative pressure air tee 7 . The seed discharge port of the seed meter 3 communicates with the seed feed end of the seed feed pipe 704 through the seed feed pipe. The bottom end of the mixing tube 703 is airtightly connected to the seeding tube 8 .

Preferably, the seed feeding pipe includes a first seed feeding pipe 4, a double-pass pipe 5 and a second seed feeding pipe 6 which are connected in sequence; the double-pass pipe 5 is in an "L" shape, which can prevent the seed feeding pipe from bending As a result, the wheat seed grains are blocked in the seed pipe and cannot fall smoothly.

Preferably, the seeding tube 8 includes an air cone 801 and an acceleration tube 802 in sequence from top to bottom; the air cone 801 is in the shape of a truncated cone with a large upper end and a small lower end, and the upper end of the air cone 801 is airtightly sleeved on the mixing pipe The bottom end of the 703.

The wall thicknesses of the gas nozzle 701, the seeding tube 704 and the mixing tube 703 are 2-6 mm, preferably 3 mm. Reasonable wall thickness can ensure that the pipe will not break after the high pressure gas is input.

The inner diameter of the air nozzle 701 is 5-20 mm, preferably 6 mm. The length of the air nozzle 701 is 70 to 120 mm, preferably 85 mm.

The inner diameter of the mixing pipe 703 is 6-15 mm larger than the inner diameter of the gas nozzle 701. Preferably, the inner diameter of the mixing pipe 703 is 10 mm larger than the inner diameter of the gas nozzle 701, so as to ensure that the seed particles are not sucked into the mixing pipe 703 through the seed feeding pipe 704. A blockage occurs.

The length of the mixing tube 703 is 40 to 60 mm, preferably 50 mm.

The taper of the air cone 801 is 0.25-0.5, preferably 0.3. A reasonable taper value ensures that the high-pressure airflow enters the acceleration tube 802 stably without generating eddy currents, thereby improving the seeding stability.

The length of the acceleration tube 802 is 300mm-1500mm, preferably 600mm, and the acceleration tube 802 with a certain length ensures that the seeds are continuously accelerated by the high-pressure air flow and reach the speed condition for seeding into the soil.

The working process of the present invention is as follows:

During operation, the wheat seeds are poured into the seed box 1, and the seed metering device 3 is driven by the motor 2 to discharge the seeds, and at the same time, the high-pressure gas in the air compression tank 9 is released. Entering the air nozzle 701, the input high-pressure gas forms a negative air pressure in the mixing pipe 703, and the seed particles discharged under the action of the negative air pressure are passed through the first seeding pipe 4, the double-pass pipe 5 and the second seeding pipe 6. Inhaled into the seed pipe 704, and then in the mixing pipe 703, the high-pressure gas and the seed grains are mixed into the seeding pipe 8, and the seed grains are accelerated by the seeding pipe 8 and injected into the soil to complete the entire rice stubble and wheat seed seeding.

Claims (6)

1. A wheat pneumatic accelerated seeding device, comprising a seeding mechanism, a pneumatic mechanism and a seeding tube (8); The seed metering mechanism comprises a seed box (1), a motor (2) and a seed metering device (3); the seed metering device (3) is fixedly connected to the lower seeding opening of the seed box (1), and the motor (2) is a The seed meter (3) transmits power, and is characterized in that: The pneumatic mechanism comprises an air compression tank (9), a pressure-resistant air pipe (10) and a negative pressure air tee (7); The negative pressure air tee (7) includes an air-tightly connected air nozzle (701), a seeding pipe (704) and a mixing pipe (703); The gas outlet end of the gas nozzle (701) is inserted into the middle of the mixing pipe (703) from the top of the mixing pipe (703); The pipe (703) is communicated; the lower edge (705) of the port of the seed outlet end of the seed inlet pipe (704) is higher than the port edge (702) of the gas outlet end of the gas nozzle (701); the seed inlet pipe (704) is connected to the mixing pipe ( 703) the acute angle α between 20°～70°; One end of the pressure-resistant air pipe (10) is communicated with the air outlet end of the air compression tank (9), and the other end is communicated with the air inlet end of the air nozzle (701) of the negative pressure air tee (7); the seed metering device The seed discharge port of (3) is communicated with the seed feeding end of the seed feeding pipe (704) through the seed feeding pipe; the bottom end of the mixing pipe (703) is airtightly connected with the seeding and seeding pipe (8); The seed feeding pipe comprises a first seed feeding pipe (4), a double-pass pipe (5) and a second seed feeding pipe (6) connected in sequence; the double-pass pipe (5) is in an "L" shape; The seeding tube (8) includes an air cone (801) and an accelerating tube (802) in sequence from top to bottom; the air cone (801) is in the shape of a circular truncated cone with a large upper end and a small lower end, and the upper end of the air cone (801) has a gas cone (801). tightly socketed at the bottom end of the mixing pipe (703); Wheat seeds are shot into the soil after being accelerated by high pressure air flow. 2 . The wheat pneumatic acceleration seeding device according to claim 1 , wherein the acute included angle α between the seed feeding tube (704) and the mixing tube (703) is 35°. 3 . 3 . The wheat pneumatic acceleration seeding device according to claim 1 , wherein the gas nozzle ( 701 ), the seed feeding pipe ( 704 ) and the mixing pipe ( 703 ) have wall thicknesses of 2 to 6 mm; 3 . The inner diameter of the gas nozzle (701) is 5-20 mm; the length of the gas nozzle (701) is 70-120 mm; the inner diameter of the mixing pipe (703) is 6-15 mm larger than the inner diameter of the gas nozzle (701); the mixing pipe (703) ) is 40 to 60 mm in length. 4. The wheat pneumatic acceleration seeding device according to claim 3, characterized in that: the wall thickness of the gas nozzle (701), the seed feeding pipe (704) and the mixing pipe (703) is 3 mm; The inner diameter of (701) is 6mm; the length of the gas nozzle (701) is 85mm; the inner diameter of the mixing pipe (703) is 10mm larger than that of the gas nozzle (701); the length of the mixing pipe (703) is 50mm. 5. The wheat pneumatic acceleration and seeding device according to claim 1, characterized in that: the taper of the air cone (801) is 0.25-0.5; the length of the acceleration tube (802) is 300mm-1500mm. 6 . The wheat pneumatic acceleration seeding device according to claim 5 , wherein the taper of the air cone ( 801 ) is 0.3; the length of the acceleration tube ( 802 ) is 600 mm. 7 .

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