A device for simultaneously sowing bean, grass and pasture seeds by using the method of surrounding air blowing type seed metering

Abstract

The present application belongs to the technical field of forage grass seeding machinery, and more particularly to a bean-forage grass seed mixed sowing device with surrounding air blowing type seed sowing. The present application aims to provide a bean-forage grass seed mixed sowing device with surrounding air blowing type seed sowing. The device is not affected by the shape and size of the seeds, and can mix and sow the seeds of multi-morphology forage grasses such as legumes and gramineae in the same row, and has good adaptability. The device can realize the smooth and orderly migration of legume and gramineae forage grass seeds in the tube, and improve the consistency of the sowing amount of each row and the uniformity in the row during the mixed sowing process. A bean-forage grass seed mixed sowing device with surrounding air blowing type seed sowing, characterized in that the device comprises a rack (1), a seed supply device (2) and a surrounding air blowing type seed sowing device (3).

Description

Technical Field

[0001] This invention belongs to the field of forage seeding machinery research and technology, and more specifically relates to a device for simultaneous sowing of soybean and forage seeds using a surrounding air-blowing method. Background Technology

[0002] Mixed sowing of leguminous and grassy forage seeds is an important planting technique and a crucial method for establishing artificial grasslands and turf. Different forage species differ significantly in their biology, ecology, and plant nutrition metabolism. Proper mixed sowing can fully utilize the advantages of different forages while avoiding their disadvantages, achieving complementary benefits. Currently, there is a lack of suitable sowing equipment in China for mixed sowing of leguminous and grassy forage seeds, especially equipment for simultaneous sowing of leguminous and grassy forages.

[0003] Currently, most forage seeding devices in China use external grooved wheel or friction disc seeders, which are poorly adapted to small-diameter forage seeds such as alfalfa, resulting in poor seeding efficiency and difficulty in seeding. Air-pumped seeders, on the other hand, are highly adaptable to both legume and grass forage seeds and are highly efficient, making them the main trend in domestic seeder development. Due to significant differences in the morphology, size, and flowability of legume and grass forage seeds, existing mixed seeding methods primarily rely on manual sowing, which is uneven and labor-intensive. Research on multi-variety mixed seeding devices is limited both domestically and internationally. Existing mixed seeding devices generally use two different seeders to mix different seeds, resulting in complex structures. Summary of the Invention

[0004] The purpose of this invention is to provide a circular air-blowing seed mixing device for legume and grass forage seeds. This device is unaffected by seed shape and size, and can perform parallel mixing and seeding of various forage seed forms, including legumes and grasses, exhibiting good adaptability. This device enables stable and orderly transport of legume and grass forage seeds within the tube, improving the uniformity of the legume and grass seed ratio within the row during the mixing and seeding process.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for simultaneous sowing of soybean and forage grass seeds using a surrounding air-blowing seed metering system, wherein the device includes a frame 1, a seed supply device 2, and a surrounding air-blowing seed metering device 3.

[0007] The frame 1 includes wheels 101, columns 102, upper longitudinal beams 103, lower crossbeams 104, horizontal support plates 105, lower longitudinal beams 106, end upper crossbeams 1071, middle upper crossbeams 1072, longitudinal support plates 108, and pulleys 109; wherein, each column 102 is provided with a wheel 101 at its bottom end, so that the device can move to a suitable position for operation;

[0008] Two end upper crossbeams 1071 are respectively fixed to the two ends of two upper longitudinal beams 103, forming an upper rectangular frame; a middle upper crossbeam 1072 is fixed to the middle of the two upper longitudinal beams 103; a longitudinal support plate 108 is fixed to the middle upper crossbeam 1072 and one end upper crossbeam 1071, and a transverse support plate 105 is fixed to the other side of the two upper longitudinal beams 103; the transverse support plate 105 is fixed to the fan 302 by bolts, and the longitudinal support plate 108 is fixedly connected to the motor 207 and the seed box 202;

[0009] Two lower crossbeams 104 located at both ends are fixed to the two lower longitudinal beams 106 located at both ends, forming a lower rectangular frame. The two lower crossbeams 104 located at both ends are connected to the two lower longitudinal beams 106 located in the middle by four sets of pulleys 109, which can realize the two lower longitudinal beams 106 located in the middle to move back and forth. The two lower longitudinal beams 106 located at both ends are connected to the two lower crossbeams 104 located in the middle by four sets of pulleys 109, which can realize the two lower crossbeams 104 located in the middle to move left and right. The two lower longitudinal beams 106 located in the middle and the two lower crossbeams 104 located in the middle form a rectangle for placing the gas-solid coupler housing 304 and supporting the annular gap type gas delivery seed conveying device 3, which can realize the movement of the gas-solid coupler housing 304 and supporting the annular gap type gas delivery seed conveying device 3 in the back-and-forth direction and the left and right direction.

[0010] The seed supply device 2 includes a seed box partition plate 201, a seed box 202, a "Y"-shaped mixing pipe 203, a fixed wheel 204, a seed supply wheel 205, a coupling 206, a motor 207, and a seed box outlet pipe 208;

[0011] The seed box 202 is divided into two areas by the seed box partition 201, which are used to hold legume forage seeds and grass forage seeds respectively.

[0012] The bottom of each of the two areas of the seed box 202 is provided with a seed supply wheel 205. The input end of each seed supply wheel 205 is connected to each motor 207 through a coupling 206. The output end of each seed supply wheel 205 is connected to the seed box outlet tube 208 through a fixed wheel 204.

[0013] The two inlets at the upper end of the “Y”-shaped mixing pipe 203 are respectively connected to the two seed box outlet pipes 208, and the opening at the lower end of the “Y”-shaped mixing pipe 203 is connected to the seed supply pipe 306 of the surrounding air-blowing seed metering device 3.

[0014] The surrounding air-blowing seed metering device 3 includes a fan connecting pipe 301, a fan 302, a seed conveying pipe 303, a gas-solid coupler housing 304, an airflow inlet pipe 305, a seed supply pipe 306, a spiral throat pipe 307, a guide pipe 308, and a corrugated pipe 309.

[0015] The fan 302 is horizontally fixed to the horizontal support plate 105 of the frame 1, and the fan 302 is connected to the airflow inlet pipe 305 through the fan connecting pipe 301.

[0016] The upper end of the guide tube 308 is provided with a first hole, the diameter of which is the same as the outer diameter of the spiral throat tube 307. The upper end of the spiral throat tube 307 is connected to the seed supply tube 306, and the lower end of the spiral throat tube 307 is inserted into the first hole at the upper end of the guide tube 308. The side of the guide tube 308 is provided with a second hole, and the airflow inlet tube 305 is connected to the second hole through a pipe.

[0017] The lower end of the guide tube 308 is connected to the upper end of the seed delivery tube 303 through the corrugated tube 309, and the center lines of the spiral throat tube 307, guide tube 308, corrugated tube 309 and seed delivery tube 303 coincide and are all arranged vertically.

[0018] The seed delivery pipe 303, airflow inlet pipe 305, seed supply pipe 306, spiral throat pipe 307, guide pipe 308 and corrugated pipe 309 are all vertically assembled and arranged in the gas-solid coupler housing 304. The three through holes of the gas-solid coupler housing 304 are respectively connected to the airflow inlet pipe 305, seed supply pipe 306 and seed delivery pipe 303.

[0019] The lower end of the spiral throat tube 307 is inserted into the hole at the upper end of the guide tube 308 by at least 15cm, so that the lower end of the guide tube 308 enters the interior of the seed delivery tube 303 by 5-8cm.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The surrounding air-blowing seeding device for simultaneous sowing of soybeans and rice is simple in structure and easy to install, operate and maintain.

[0022] 2. The surrounding air-blowing seed metering device used in this invention enables the seeds in the seed delivery tube to be delivered smoothly and evenly under the action of high-speed surrounding airflow, which can improve the uniformity of the proportion of soybean and grass seeds in the row during the mixed sowing process.

[0023] 3. This invention, through a seed supply device and a surrounding air-blowing seed metering device, combined with the agronomic requirements for mixed sowing of leguminous and gramineous forage seeds, can adjust the motor speed according to the seeding rate and mixing ratio of leguminous and gramineous forage seeds, and precisely control the seed supply, thus achieving precise control of the mixed sowing ratio and seeding rate. Attached Figure Description

[0024] Figure 1 An isometric view of a parallel sowing device for soybean and forage grass seeds using an air-blowing seed metering system according to the present invention.

[0025] Figure 2This is a front view of the inside of the seed box of the feeding device of the bean and grass seed mixing device of the present invention, which is a surrounding air-blowing seed metering device.

[0026] Figure 3 This is an internal isometric view of the surrounding air-blowing seed metering device of the present invention;

[0027] Figure 4 This is a schematic diagram of the surrounding air-blowing seed metering principle of the present invention.

[0028] The reference numerals in the attached figures are:

[0029] 1. Rack

[0030] 101. Walking wheels 102. Upright column

[0031] 103. Upper longitudinal beam; 104. Lower transverse beam

[0032] 105. Horizontal support plate; 106. Lower longitudinal beam

[0033] 1071. End upper crossbeam; 1072. Middle upper crossbeam

[0034] 108. Longitudinal support plate; 109. Pulley

[0035] 2. Seed supply device

[0036] 201. Seed box divider 202. Seed box

[0037] 203. Y-shaped mixing pipe; 204. Fixed wheel

[0038] 205. Seed feed reel; 206. Coupling

[0039] 207. Motor; 208. Seed box and seed outlet tube

[0040] 3. Circular air-blowing seed metering and conveying device

[0041] 301. Fan connecting pipe; 302. Fan.

[0042] 303. Seed delivery tube; 304. Gas-solid coupler housing

[0043] 305. Airflow inlet pipe; 306. Seed supply pipe

[0044] 307. Spiral throat tube; 308. Drainage tube

[0045] 309. Corrugated pipe Detailed Implementation

[0046] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0047] like Figure 1As shown, the sowing device for co-sowing soybean and forage grass seeds by air-blowing includes a frame 1, a seed supply device 2, and an air-blowing seed metering device 3.

[0048] The frame 1 includes wheels 101, columns 102, upper longitudinal beams 103, lower crossbeams 104, horizontal support plates 105, lower longitudinal beams 106, end upper crossbeams 1071, middle upper crossbeams 1072, longitudinal support plates 108, and pulleys 109. Each column 102 has a wheel 101 at its bottom, allowing the device to move to a suitable position for operation.

[0049] Two end upper crossbeams 1071 are fixed to the two ends of two upper longitudinal beams 103, forming an upper rectangular frame. A middle upper crossbeam 1072 is fixed to the middle of the two upper longitudinal beams 103. A longitudinal support plate 108 is fixed to the middle upper crossbeam 1072 and one end upper crossbeam 1071, and a transverse support plate 105 is fixed to the other side of the two upper longitudinal beams 103. The transverse support plate 105 is fixed to the fan 302 with bolts, and the longitudinal support plate 108 is fixedly connected to the motor 207 and the seed box 202.

[0050] Two lower crossbeams 104 at both ends are fixed to the ends of two lower longitudinal beams 106 at both ends, forming a lower rectangular frame. Four sets of pulleys 109 connect the two lower crossbeams 104 at both ends to the two lower longitudinal beams 106 in the middle, allowing the two lower longitudinal beams 106 in the middle to move forward and backward. Four sets of pulleys 109 also connect the two lower crossbeams 104 in the middle, allowing the two lower crossbeams 104 in the middle to move left and right. The two lower longitudinal beams 106 and the two lower crossbeams 104 in the middle form a rectangle for housing the gas-solid coupler housing 304 and supporting the annular gap gas-carrying seed conveying device 3, allowing the gas-solid coupler housing 304 and the supporting annular gap gas-carrying seed conveying device 3 to move in the forward-backward and left-right directions.

[0051] like Figure 1 and Figure 2 As shown, the seed supply device 2 includes a seed box partition plate 201, a seed box 202, a "Y"-shaped mixing pipe 203, a fixed wheel 204, a seed supply wheel 205, a coupling 206, a motor 207, and a seed box outlet pipe 208.

[0052] The seed box 202 is divided into two areas by the seed box partition 201, which are used to hold legume forage seeds and grass forage seeds respectively.

[0053] The bottom of each of the two areas of the seed box 202 is provided with a seed supply wheel 205. The input end of each seed supply wheel 205 is connected to each motor 207 via a coupling 206. The output end of each seed supply wheel 205 is connected to the seed box outlet pipe 208 via a fixed wheel 204.

[0054] The two inlets at the upper end of the “Y”-shaped mixing pipe 203 are respectively connected to the two seed box outlet pipes 208, and the opening at the lower end of the “Y”-shaped mixing pipe 203 is connected to the seed supply pipe 306 of the surrounding air-blowing seed metering device 3.

[0055] The motor 207 drives the seed supply wheel 205 to rotate, delivering the seeds to the seed supply tube 306, thereby achieving seed supply.

[0056] like Figure 1 and Figure 3 As shown, the surrounding air-blowing seed metering device 3 includes a fan connecting pipe 301, a fan 302, a seed conveying pipe 303, a gas-solid coupler housing 304, an airflow inlet pipe 305, a seed supply pipe 306, a spiral throat pipe 307, a guide pipe 308, and a corrugated pipe 309.

[0057] The fan 302 is horizontally fixed to the horizontal support plate 105 of the frame 1, and the fan 302 is connected to the airflow inlet pipe 305 through the fan connecting pipe 301.

[0058] The upper end of the guide tube 308 has a first hole, the diameter of which is the same as the outer diameter of the spiral throat tube 307. The upper end of the spiral throat tube 307 is connected to the seed supply tube 306, and the lower end of the spiral throat tube 307 is inserted into the first hole at the upper end of the guide tube 308. The side of the guide tube 308 has a second hole, and the airflow inlet tube 305 is connected to the second hole through a pipe.

[0059] The lower end of the guide tube 308 is connected to the upper end of the seed delivery tube 303 via a corrugated tube 309, and the centerlines of the spiral throat tube 307, guide tube 308, corrugated tube 309, and seed delivery tube 303 coincide and are all arranged vertically. Preferably, the lower end of the spiral throat tube 307 is inserted into the hole at the upper end of the guide tube 308 by at least 15 cm, so that the lower end of the guide tube 308 enters the interior of the seed delivery tube 303 by 5-8 cm.

[0060] The seed delivery pipe 303, airflow inlet pipe 305, seed supply pipe 306, spiral throat pipe 307, guide pipe 308 and corrugated pipe 309 are all vertically assembled and arranged in the gas-solid coupler housing 304. The three through holes of the gas-solid coupler housing 304 are respectively connected to the airflow inlet pipe 305, seed supply pipe 306 and seed delivery pipe 303.

[0061] like Figure 4As shown, the airflow and seed flow in the surrounding air-blowing seed metering device 3 enter from the airflow inlet pipe 305 and the seed supply pipe 306, respectively. A two-phase flow of seeds and air is formed within the seed delivery pipe 303, and after being pressurized by the corrugated pipe 309, it is discharged uniformly, stably, and orderly. The guide pipe 308 is a conical nozzle-type guide structure with a taper of 0.4 to 0.8. Gas enters the guide pipe 308 from the airflow inlet pipe 305 and flows into the seed delivery pipe 303 along the outer wall of the spiral throat pipe 307 under the guidance of the guide pipe 308. Simultaneously, mixed seeds enter the spiral throat pipe 307 from the seed supply pipe 306 and then slide down the inner wall of the spiral throat pipe 307 into the seed delivery pipe 303, forming a two-phase flow of seeds and air. During the seed delivery process, the conical nozzle-type guide pipe 308 surrounding the air-blowing seed metering device 3 can provide surrounding airflow, increase the airflow velocity at the inner wall of the seed delivery pipe, and generate airflow velocity differences on each cross section of the seed delivery pipe 303, which can effectively reduce the collision between the seeds and the pipe wall, and ensure the smooth and orderly delivery of the seeds.

[0062] This invention, through a seed supply device and a surrounding air-blowing seed metering device, combined with the agronomic requirements for mixed sowing of leguminous and gramineous forage seeds, can adjust the speed of motor 207 according to the seed sowing amount and mixing ratio of leguminous and gramineous forage seeds, thereby precisely controlling the seed supply and achieving precise control of the mixed sowing ratio and sowing amount.

Claims

1. A device for simultaneous sowing of soybean and forage grass seeds using a circular air-blowing method, characterized in that: The device includes a frame (1), a seed supply device (2), and a surrounding air-blowing seed metering device (3); The frame (1) includes a traveling wheel (101), a column (102), an upper longitudinal beam (103), a lower crossbeam (104), a horizontal support plate (105), a lower longitudinal beam (106), an end upper crossbeam (1071), a middle upper crossbeam (1072), a longitudinal support plate (108), and a pulley (109); wherein, each column (102) is provided with a traveling wheel (101) at its bottom end, so that the device can move to a suitable position to work; Two end upper crossbeams (1071) are fixed to the two ends of two upper longitudinal beams (103) respectively, forming an upper rectangular frame; a middle upper crossbeam (1072) is fixed to the middle of the two upper longitudinal beams (103); a longitudinal support plate (108) is fixed to the middle upper crossbeam (1072) and one end upper crossbeam (1071), and a transverse support plate (105) is fixed to the other side of the two upper longitudinal beams (103); the transverse support plate (105) is fixed to the fan (302) by bolts, and the longitudinal support plate (108) is fixedly connected to the motor (207) and the seed box (202); Two lower crossbeams (104) located at both ends are fixed to the two lower longitudinal beams (106) located at both ends, forming a lower rectangular frame; the two lower crossbeams (104) located at both ends are connected to the two lower longitudinal beams (106) located in the middle by four sets of pulleys (109), which enables the two lower longitudinal beams (106) located in the middle to move back and forth; the two lower longitudinal beams (106) located at both ends are connected to the two lower crossbeams (104) located in the middle by four sets of pulleys (109), which enables the two lower crossbeams (104) located in the middle to move left and right; the two lower longitudinal beams (106) located in the middle and the two lower crossbeams (104) located in the middle form a rectangle for placing the gas-solid coupler housing (304), which enables the gas-solid coupler housing (304) to move in the front-back direction and the left and right direction; The seed supply device (2) includes a seed box partition plate (201), a seed box (202), a "Y"-shaped mixing pipe (203), a fixed wheel (204), a seed supply wheel (205), a coupling (206), a motor (207), and a seed box outlet pipe (208). The seed box (202) is divided into two areas by a seed box partition (201), which are used to hold legume forage seeds and grass forage seeds respectively; The bottom of each of the two areas of the seed box (202) is provided with a seed supply wheel (205), and the input end of each seed supply wheel (205) is connected to each motor (207) through a coupling (206); the output end of each seed supply wheel (205) is connected to the seed box outlet pipe (208) through a fixed wheel (204); The two inlets at the upper end of the "Y"-shaped mixing pipe (203) are respectively connected to the two seed box outlet pipes (208), and the opening at the lower end of the "Y"-shaped mixing pipe (203) is connected to the seed supply pipe (306) of the surrounding air-blowing seed metering device (3). The surrounding air-blowing seed metering device (3) includes a fan connecting pipe (301), a fan (302), a seed conveying pipe (303), a gas-solid coupler housing (304), an airflow inlet pipe (305), a seed supply pipe (306), a spiral throat pipe (307), a guide pipe (308), and a corrugated pipe (309). The fan (302) is horizontally fixed to the horizontal support plate (105) of the frame (1), and the fan (302) is connected to the airflow inlet pipe (305) through the fan connecting pipe (301); The upper end of the guide tube (308) is provided with a first hole, the diameter of which is the same as the outer diameter of the spiral throat tube (307). The upper end of the spiral throat tube (307) is connected to the seed supply tube (306), and the lower end of the spiral throat tube (307) is inserted into the first hole at the upper end of the guide tube (308). The guide tube (308) is a conical nozzle-type guide structure with a taper of 0.4 to 0.

8. The side of the guide tube (308) is provided with a second hole, and the airflow inlet pipe (305) is connected to the second hole through a pipe. The lower end of the guide tube (308) is connected to the upper end of the seed delivery tube (303) through the corrugated tube (309), and the center lines of the spiral throat tube (307), guide tube (308), corrugated tube (309) and seed delivery tube (303) coincide and are all arranged vertically; The seed delivery pipe (303), airflow inlet pipe (305), seed supply pipe (306), spiral throat pipe (307), guide pipe (308) and corrugated pipe (309) are all vertically assembled and arranged inside the gas-solid coupler housing (304). The three through holes of the gas-solid coupler housing (304) are respectively connected to the airflow inlet pipe (305), the seed supply pipe (306) and the seed delivery pipe (303).

2. The circular air-blowing seed mixing device for soybean and forage grass seeds as described in claim 1, characterized in that: The lower end of the spiral throat tube (307) is inserted into the hole at the upper end of the guide tube (308) by at least 15 cm, so that the lower end of the guide tube (308) enters the interior of the seed delivery tube (303) by 5-8 cm.

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