A sunflower sowing device for red soil in the Hetao area

Abstract

The invention discloses a sunflower sowing device for red soil in the Hetao area, belonging to the field of agricultural machinery. The device mainly comprises a roller, a central axis, a frame, a seed taking device, a duck beak and other roller and duck beak hole sowing structures. The device is characterized in that a set of sand supply devices is added to realize the mechanized operation of covering the seeds with sand when sowing the sunflower seeds. The device is used to solve the problems that the red soil in Bayannur City is relatively sticky, the germination rate of sunflower seeds is low after sowing, and the work efficiency of artificial covering with sand is low.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a sunflower sowing machine, and in particular to a sunflower sowing device for red soil in the Hetao region. Background Art

[0002] Among the current hole-seeding technologies, the roller duck-bill hole-seeding technology has become quite mature. It is widely used in various hole-seeding machines because of its advantages such as precise hole spacing, simple adjustment of row spacing and plant spacing, and simple control of hole-seeding depth. This type of hole-seeding machine is suitable for hole-seeding without film, hole-seeding under film, and hole-seeding on film in the northern regions of my country with less precipitation.

[0003] After searching, the relevant hole sowing machines are:

[0004] On June 17, 1998, a Chinese patent document disclosed an air-suction sowing film-laying device, the publication number of which is CN2283960. It consists of a drum, a drum shaft and a film-pressing wheel. The main thing is that the film-pressing wheel is connected to the drum as a whole. A seed chamber, a seed suction disc and a vacuum chamber are arranged in the drum cavity. The seed suction disc is connected to the drum. The seed suction disc, the drum and the film-pressing wheel are installed on the drum shaft. The periphery of the seed suction disc is provided with equidistant seed suction holes. An inoculation bucket is arranged on the inner circumference of the drum. The seed suction holes correspond to the vacuum arc section of the vacuum chamber on the right side of the seed suction disc. The seed unloading arc section on the vacuum chamber corresponds to the inoculation bucket below. The number of seed suction holes matches the number of inoculation buckets. A duckbill hole former corresponding to the inoculation bucket is arranged on the outer circumference of the drum. The number of duckbill hole formers matches the spacing of the sown crops. A ground film is arranged below the drum and the film-pressing wheel. When working, the air-suction seeding device installed in the fertilizer film-laying and sowing mechanism rolls forward under the traction of the tractor. The tractor drives the high-pressure fan to form negative pressure in the vacuum chamber. When the seed suction disc rotates, the seeds in the seed box are adsorbed on the seed suction holes under the action of negative pressure, and the seeds are brought out of the population as the roller rolls. When the seeds are transferred out of the vacuum chamber, they are no longer subject to negative pressure and fall into the corresponding inoculation bucket under the action of gravity, and then slide into the duckbill hole former and fall into the hole formed by the duckbill hole former piercing the ground film. At the same time, the film pressing wheel spreads and presses the ground film, and the film edge and seed belt are covered with soil under the action of the covering device;

[0005] Similar patent technologies include an air-suction precision seed-taking hole-seeding device disclosed in Chinese invention patent application publication number CN101766078A; a multi-plant hole-seeding device disclosed in Chinese invention patent application publication number CN104054438A; an air-suction hole-seeding roller device disclosed in Chinese invention patent authorization announcement number CN101810074B, etc., which are not listed here one by one; the principles of the above devices are basically the same.

[0006] In addition, the structure of the duckbill used in this type of equipment is basically the same. The following is a specific introduction using one of them as an example;

[0007] like Fig. 20 As shown, a plurality of duckbill 2 are evenly arranged on the outer circumference of the drum 1, and the duckbill 2 includes a fixed duckbill 201, a spring pressure plate 203, a switch spring 204, and a duckbill bottom plate 205; the fixed duckbill 201 is a shell structure, the interior of which is a cavity, and the left side is a movable duckbill 202 that can be opened and closed, and the lower edge of the movable duckbill 202 is hinged on the fixed duckbill 201; the spring pressure plate 203 is located on the left side of the fixed duckbill 201, and the lower edge of the spring pressure plate 203 The edge is connected to the lower edge of the movable duckbill 202 as a whole, and the upper edge of the spring pressure plate 203 extends obliquely to the upper left, exceeding the upper edge of the fixed duckbill 201; the switch spring 204 is installed on the left side of the spring pressure plate 203, and its upper end is fixedly connected to the lower surface of the spring pressure plate 203, and its lower end is obliquely fixedly connected to the duckbill bottom plate 205 to the lower left; the duckbill bottom plate 205 is an arc-shaped plate, which matches the outer circumference of the drum 1, and the duckbill bottom plate 205 is fixedly connected to the outer circumference of the drum 1. Fig.21 As shown, a duckbill connection port 206 is provided on the duckbill bottom plate 205, and the duckbill connection port 206 is connected to the internal cavity of the fixed duckbill 201; the duckbill connection port 206 is used to connect the seed taking device;

[0008] like Fig. 20 As shown, the action process of the duckbill 2 is as follows: the drum 1 rolls forward, the fixed duckbill 201 is inserted into the soil to make holes, and continues to roll. The spring pressure plate 203 behind the fixed duckbill 201 contacts the ground and is pressed to drive the movable duckbill 202 to open. At the same time, the switch spring 204 is compressed, and the seeds are sown into the holes from the opened fixed duckbill 201. The drum 1 continues to roll forward, the spring pressure plate 203 leaves the ground, and under the action of the switch spring 204, the movable duckbill 202 closes to complete the seeding process.

[0009] Most of Bayannur City (that is, the Hetao region) is red soil, and sunflowers are planted on a large scale locally, and are generally sown from mid-May to mid-June. The sunflowers planted locally are called hot water sunflowers, and the hot water sunflowers are first covered with mulch and then watered, and the sunflowers are sown when the land is a little dry. Since the local red soil is relatively sticky, the germination rate of sunflower seeds is low after sowing, so the current effective sowing method is to cover the seeds with sand when sowing the sunflower seeds. The existing air-suction hole sowing device cannot meet the sowing needs, so farmers do not use machines to sow, but still use a spot sowing device manually. For this reason, the inventor independently designed and manufactured a red soil sunflower sowing device in the Hetao region, and added a sand supply device on the basis of the existing air-suction hole sowing device, so as to realize the mechanized operation of covering the seeds with sand when sowing the sunflower seeds. Summary of the invention

[0010] The purpose of the present invention is to provide a sunflower sowing device for red soil in the Hetao area. A sand supply device is added on the basis of the existing air-suction hole sowing device, so as to realize the mechanized operation of covering the seeds with sand when sowing the sunflower seeds. The device is used to solve the problems that the red soil in Bayannur City is relatively sticky, the germination rate of sunflower seeds is low after sowing, and the efficiency of manual covering with sand is low.

[0011] The technical solution adopted by the present invention is as follows: a sunflower sowing device for red soil in the Hetao region, comprising a drum, a central axis, a frame, a seed taking device, a duck mouth, and a sand supply device;

[0012] The drum is cylindrical in shape, and a first partition is arranged inside the drum to divide the inside of the drum into a left sand supply chamber on the left and a right seed supply chamber on the right, and a central shaft is installed in the center of the first partition and on the axis of the drum, and the first partition and the central shaft are rotatably connected through a bearing; the central shaft is fixedly connected to the frame and is immovable, and the drum can rotate around the central shaft;

[0013] A circle of first connecting sleeves is extended around the central axis in the left sand supply chamber on the left side of the drum, in the center of the first partition, and around the central axis. The first connecting sleeve is located in the center of the left sand supply chamber and rotates synchronously with the drum; a circular baffle is arranged in the center of the left sand supply chamber and around the first connecting sleeve, and the baffle is fixedly connected to the first partition. The baffle further divides the left sand supply chamber into an outer sand supply channel and an internal sand storage cavity. Three sand supply chambers are evenly distributed in the sand supply channel, each of which is surrounded by two partitions. There are unit sand supply channels between adjacent sand supply chambers, and a first sand supply opening connected to the inside of the sand storage cavity is opened in the center of each unit sand supply channel;

[0014] The sand supply chamber comprises a left baffle and a right baffle, wherein a second sand supply opening is provided on the right baffle, and the second sand supply opening is connected to the sand supply chamber and the unit sand supply channel on the right side thereof; a spiral sand supply pipe is installed in the sand supply chamber, and the spiral sand supply pipe is installed perpendicular to the first partition;

[0015] The spiral sand supply pipe comprises a cylindrical outer pipe sleeve, the rear end of the outer pipe sleeve is integrally connected to a rectangular pipe, the bottom of the rectangular pipe is provided with a sand outlet, and a first sand inlet is provided on the side wall of the outer pipe sleeve; a first spiral rod with spiral blades is installed inside the outer pipe sleeve and on the axis, and the front end of the first spiral rod passes through the front side of the outer pipe sleeve and is fixedly installed with a first gear; the spiral sand supply pipe is installed on the upper inner part of the two baffles and close to the surrounding baffle, and the rear end of the spiral sand supply pipe passes through the spiral pipe through hole opened on the first baffle and extends into the right seed supply chamber; the second sand supply opening opened on the right baffle is close to the inner wall of the drum, and the first sand inlet provided on the side wall of the outer pipe sleeve faces the second sand supply opening; in addition, a first guide plate parallel to the right baffle and a second guide plate perpendicular to the right baffle are provided; the first guide plate is located on the left side of the outer pipe sleeve and close to the side of the outer pipe sleeve; the second guide plate is perpendicular to the second sand supply opening and close to the first sand inlet of the outer pipe sleeve, and the free end of the second guide plate is suspended, and the sand is drained through the first guide plate and the second guide plate;

[0016] The rectangular tube at the rear end of the outer tube sleeve is located on the inner wall of the right seed supply chamber and is installed perpendicular to the inner wall of the drum. The sand outlet provided at the bottom of the rectangular tube is connected to the duck mouth installed on the drum.

[0017] The left sand supply chamber on the left side of the drum is also provided with a front cover plate for the sand supply chamber to seal the sand supply channel. The front cover plate of the sand supply chamber is circular, and the center is a second through hole connected to the sand storage cavity; the front cover plate of the sand supply chamber is also provided with a third through hole corresponding to the three spiral sand supply pipes, and the front end of the first spiral rod in the spiral sand supply pipe passes through the third through hole to install the first gear; a sand receiving box is installed on the outside of the front cover plate of the sand supply chamber and at the second through hole. The sand receiving box is a cylindrical shell, and its center is fixedly connected to the central axis and does not rotate; a sand receiving pipe is provided at the upper end of the sand receiving box, and the sand receiving pipe is connected to the inside of the sand receiving box, and the upper end of the sand receiving pipe is open; a third sand supply opening is provided at the lower part of the back plate behind the sand receiving box, and the third sand supply opening is connected to the inner cavity of the sand receiving box and the sand storage cavity;

[0018] A stirring part is installed in the center of the sand receiving box, and the stirring part includes a central annular sleeve and stirring blades evenly distributed on the annular sleeve; the annular sleeve is sleeved on the first connecting sleeve, and the first connecting sleeve is located in the center of the left sand supply chamber and rotates synchronously with the drum, so the stirring part will also rotate synchronously;

[0019] A circle of circular chain is fixedly installed on the outer circumference of the sand box, and the chain is fixed; the three first gears at the front ends of the three spiral sand supply pipes and the chain form a chain transmission, that is, the rotation of the drum drives the three first gears to rotate, and the three first gears drive the first spiral rods of the spiral sand supply pipes to rotate, and the spiral blades on the first spiral rods push the sand in the pipe into the rectangular pipe at the rear end;

[0020] The sand supply device also includes parts outside the drum, specifically including a sand trough and a sand delivery hose;

[0021] The sand trough is fixedly installed on the frame and is located above the drum; the top of the sand trough is open; a cylindrical sand supply pipe is provided at the bottom of the sand trough, the sand supply pipe is parallel to the length direction of the sand trough and is of equal length, a fourth sand supply port connected to the sand supply pipe is provided at the bottom of the sand trough, a fifth sand supply port is provided at the bottom of the sand supply pipe, the fifth sand supply port is connected to the sand receiving box through a sand delivery hose, and the lower end of the sand delivery hose is inserted from the upper end of the sand receiving pipe; a second spiral rod is installed inside the sand supply pipe and on the axis, and a spiral blade is provided on the second spiral rod, the rear end of the second spiral rod passes through the rear end face of the sand supply pipe and is connected to the bearing on the frame, and the front end of the second spiral rod passes through the front end face of the sand supply pipe and is connected to the bearing on the frame; the front end of the second spiral rod is connected to a power source, and the second spiral rod is driven to rotate by the power source;

[0022] The seed taking device is arranged in the right seed supply chamber of the drum, and the seed taking device is used to select seeds and deliver them into the duck's mouth;

[0023] The duckbill comprises a fixed duckbill, a movable duckbill, a first spring pressure plate, and a first switch spring; the duckbill is a shell structure with a cavity inside, and the right side is a movable duckbill that can be opened and closed, and the first spring pressure plate is fixedly connected to the movable duckbill; the first switch spring is installed on the upper surface of the first spring pressure plate; the duckbill is installed on the side wall of the drum;

[0024] In addition, a trigger mechanism is also provided at the opening at the lower end of the rectangular tube of the spiral sand supply tube, and the trigger mechanism includes a door panel arranged at the opening at the lower end of the rectangular tube, the right side wall of the door panel is hingedly connected to the side wall of the rectangular tube, and an opening connecting rod is hingedly connected to the right edge of the door panel; the trigger mechanism also includes a second spring pressure plate and a second switch spring, the second spring pressure plate is arranged on the left side of the first spring pressure plate, the left side of the second spring pressure plate is hinged on the side wall of the drum, the right side and the upper surface of the second spring pressure plate are hingedly connected to the lower end of the opening connecting rod, the opening connecting rod passes through the drum wall, is located on the right side of the rectangular tube, and is hinged to the right edge of the door panel of the rectangular tube, and the second switch spring is connected to the rotating shaft where the opening connecting rod is hinged to the door panel, the upper end of the second switch spring is fixedly connected to the rotating shaft, and the lower end is fixedly connected to the drum wall.

[0025] Furthermore, the seed taking device is an air suction seed taking device, including a part arranged on the drum and a part arranged outside the drum;

[0026] First, a seed suction disc is installed inside the drum and on the right side of the first partition. The seed suction disc is fixedly connected to the central axis and is immovable. A vacuum chamber is formed between the first partition and the seed suction disc by a circular partition, and the vacuum chamber rotates relative to the seed suction disc; equidistant seed suction holes are arranged on the periphery of the seed suction disc; inoculation buckets are arranged on the inner circumference of the drum, and the number of seed suction holes matches the number of inoculation buckets; duck mouths corresponding to the inoculation buckets are arranged on the outer circumference of the drum, and the number of duck mouths matches the spacing of the crops;

[0027] A circular inoculation box is installed on the outside of the seed suction tray, and an inoculation chamber is formed between the inoculation box and the seed suction tray for temporarily storing seeds. A first seed inlet is provided at the lower right corner of the inoculation box, and a crescent-shaped baffle is also provided inside the inoculation box. The crescent-shaped baffle and the inoculation box shell form a channel, and the end of the channel is a seed outlet; a vertical upward inoculation tube is provided on the outside of the inoculation box, and the top of the inoculation tube is open. The inoculation box is fixedly connected to the central axis and is fixed;

[0028] The central axis passes through the vacuum chamber; the central axis is a hollow tube, and a suction port is provided at the left end thereof for connecting an external electric blower; a second suction hole is provided on the tube wall of the central axis in the vacuum chamber, and the second suction hole is used to suck out the gas in the vacuum chamber to form a negative pressure; a gas blocking rod for blocking the seed suction hole is fixedly connected to the central axis, and the upper end of the gas blocking rod is fixedly connected to the central axis and does not rotate, and a plug is provided at the lower end of the gas blocking rod, which can block the seed suction hole, that is, the rotation path of the seed suction hole passes through the plug;

[0029] The inoculation bucket is arc-shaped and opens toward one side of the center of the drum, and is used to receive the seeds dropped from the inoculation box; the inoculation bucket is fixedly mounted on the inner wall of the drum and rotates with the drum; the seed discharge conduit is a component connected to the discharge port of the inoculation bucket, and is used to guide the seeds in the inoculation bucket into the duck's mouth; the seed discharge conduit consists of a front end horizontal tube, a middle inclined section, and a terminal vertical tube, the front end horizontal tube is connected to the discharge port of the inoculation bucket, and the terminal end of the terminal vertical tube is the seed outlet, which is located in the duck's mouth;

[0030] The rectangular tube at the end of the sand supply device and the seed discharge conduit at the end of the air suction seed taking device are installed in the drum, facing the feed inlet at the upper part of the duck's mouth;

[0031] A rectangular tube at the end of a sand supply device and a seed discharge conduit at the end of an air suction seed taking device are installed at the opening at the upper part of the duck's mouth, and a sand discharge port at the lower end of the rectangular tube and a seed discharge port at the lower end of the seed discharge conduit are in the opening at the upper part of the duck's mouth;

[0032] The air suction seed taking device also includes a seed box arranged outside the drum, the seed box is a box with an open top, used to store sunflower seeds, the seed box is fixedly connected to the frame, the bottom of the seed box is connected to the inoculation box through a seed delivery hose, and the lower end of the seed delivery hose is inserted into the upper end opening of the inoculation tube on the right side of the inoculation box;

[0033] The air suction seed taking device also includes an electric fan and an air suction duct arranged outside the drum; the electric fan is fixed on the frame, and the electric fan is connected to an air suction port 1 at the left end of the central axis through the air suction duct.

[0034] Furthermore, the device is specifically provided with 3 seed suction holes, 3 inoculation buckets, and 3 duck beaks.

[0035] Furthermore, the device is symmetrically provided with two rollers.

[0036] Furthermore, a circle of short rods is arranged on the outer side wall of the drum, and when the drum rolls, the short rods are inserted into the ground.

[0037] The beneficial effects of the present invention are as follows: the sunflower sowing device provided by the present invention is a sunflower sowing device that adds a sand supply device on the basis of the existing air-suction hole sowing device, thereby realizing the mechanized operation of covering the seeds with sand when sowing the sunflower seeds. The device is used to solve the problems that the red soil in Bayannur City is relatively sticky, the germination rate of sunflower seeds is low after sowing, and the work efficiency of manual covering with sand is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The present invention is a schematic diagram of the structural principle of the drum cut from the side.

[0039] Figure 2 This is a schematic diagram of the three-dimensional structure of the device as seen from the left sand supply chamber.

[0040] Figure 3 This is a schematic diagram of the three-dimensional structure of the device as seen from the right seed supply chamber side.

[0041] Figure 4 It is a schematic diagram of the three-dimensional structure of the device from a top view.

[0042] Figure 5 This is a schematic diagram of the structure at the innermost part of the left sand supply chamber.

[0043] Figure 6 This is a detailed structural diagram of the sand supply chamber.

[0044] Figure 7 This is a schematic diagram of the three-dimensional structure of the spiral sand supply pipe.

[0045] Figure 8 It is a schematic diagram of the structure of the seed suction tray.

[0046] Fig. 9 This is a diagram showing the structure of the sand supply device, the end of the air-suction seed taking device, and the duck's mouth.

[0047] Fig.10 It is a structural schematic diagram of the front cover of the sand supply chamber.

[0048] Fig.11 This is a schematic diagram of the structure where the sandbox is connected.

[0049] Fig.12 Schematic diagram of the internal structure of the inoculation box.

[0050] Fig.13 Schematic diagram of the structure inside the vacuum chamber.

[0051] Fig.14 Schematic diagram of the three-dimensional structure with the central axis.

[0052] Fig.15 It is a schematic diagram of the three-dimensional structure of the inoculation bucket and seed discharge duct.

[0053] Fig.16 It is a schematic diagram of the three-dimensional structure of the seed discharge catheter from a top view.

[0054] Fig.17 It is a schematic diagram of the three-dimensional structure of the seed discharge catheter when viewed from above.

[0055] Fig.18 A side view of a duck's beak.

[0056] Fig.19 A top view of a duck's beak.

[0057] Fig. 20 It is a structural schematic diagram of the drum in the background technology.

[0058] Fig.21 A schematic diagram of the structure of a duck's beak in a technical background.

[0059] Fig. 22 This is a real picture seen from the left sand supply chamber of the present invention.

[0060] Fig.23 This is a real picture of the device as seen from the right seed supply chamber side.

[0061] Figure 1-19 Middle: drum 1, first baffle 101, first connecting sleeve 102, baffle plate 103, sand supply channel 104, sand storage chamber 105, sand supply chamber 106, unit sand supply channel 107, first sand supply opening 108, left baffle plate 109, right baffle plate 1010, second sand supply opening 1011, spiral tube through hole 1012, first guide plate 1013, second guide plate 1014;

[0062] Central axis 2, second air intake hole 201, frame 3;

[0063] Spiral sand supply pipe 4, outer pipe sleeve 401, rectangular pipe 402, first sand inlet 403, first spiral rod 404, first gear 405,

[0064] Duckbill 5, fixed duckbill 501, movable duckbill 502, first spring pressure plate 503, first switch spring 504;

[0065] The front cover plate 6 of the sand supply chamber, the second through hole 601, the third through hole 602,

[0066] Connect to sand box 7, connect to sand pipe 701, third sand supply opening 702,

[0067] Stirring part 8, annular sleeve 801, stirring blade 802,

[0068] Chain 9, sand trough 10, sand supply pipe 1001, fourth sand supply port 1002, fifth sand supply port 1003, second spiral rod 1004,

[0069] Sand delivery hose 11, seed suction plate 12, seed suction hole 1201, circular partition 13, vacuum chamber 14, inoculation bucket 15, inoculation box 16, inoculation chamber 1601, first seed inlet 1602, crescent-shaped baffle 1603, inoculation tube 1604,

[0070] Air blocking rod 17, plug 1701, seed discharging conduit 18, front end transverse tube 1801, middle inclined section 1802, end vertical tube 1803,

[0071] Trigger mechanism 19, door plate 1901, opening link 1902, second spring pressure plate 1903, second switch spring 1904,

[0072] Seed box 20, seed delivery hose 21, electric fan 22, air suction duct 23, short rod 24. DETAILED DESCRIPTION

[0073] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings. The following description is only used to illustrate the technical solution of the present invention rather than to limit it.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention; in addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features; thus, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0075] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0076] The structure of this device is relatively complex, and the structure of this device is explained in detail below.

[0077] A sunflower sowing device for red soil in the Hetao region mainly comprises a drum 1, a central axis 2, a frame 3, a sand supply device, an air suction seed taking device, and a duck mouth 5.

[0078] like Figure 2 As shown, the drum 1 is cylindrical in shape. Figure 1 As shown, a first partition 101 is arranged inside the drum 1 to divide the inside of the drum 1 into a left sand supply chamber on the left side and a right seed supply chamber on the right side, and a central shaft 2 is installed in the center of the first partition 101 and on the axis of the drum 1, and the first partition 101 is rotatably connected to the central shaft 2 through a bearing; the central shaft 2 is fixedly connected to the frame 3 and is immovable, and the drum 1 can rotate around the central shaft 2;

[0079] like Figure 5 The figure is a schematic diagram of the internal structure of the left sand supply chamber on the left side of the drum 1. A circle of first connecting sleeves 102 is extended from the center of the first partition 101 and around the central axis 2. The first connecting sleeve 102 is located in the center of the left sand supply chamber and rotates synchronously with the drum 1. A circular baffle plate 103 is arranged in the center of the left sand supply chamber and around the first connecting sleeve 102. The baffle plate 103 is fixedly connected to the first partition 101. The baffle plate 103 further divides the left sand supply chamber into an outer sand supply channel 104 and an internal sand storage chamber 105. Three sand supply chambers 106 are evenly distributed in the sand supply channel 104. Figure 5 As shown, each sand supply chamber 106 is surrounded by two partitions, and a unit sand supply channel 107 is formed between adjacent sand supply chambers 106. A first sand supply opening 108 communicating with the interior of the sand storage chamber 105 is opened in the center of each unit sand supply channel 107;

[0080] like Figure 6 , which is a detailed structural diagram of the sand supply chamber 106. The sand supply chamber 106 includes a left baffle 109 and a right baffle 1010. The right baffle 1010 is provided with a second sand supply opening 1011, and the second sand supply opening 1011 connects the sand supply chamber 106 and the unit sand supply channel 107 on the right side thereof; a spiral sand supply pipe 4 is installed in the sand supply chamber 106, and the spiral sand supply pipe 4 is installed perpendicular to the first partition plate 101, as shown in FIG. Figure 7 The figure is a schematic diagram of the three-dimensional structure of the spiral sand supply pipe 4, which includes a cylindrical outer pipe sleeve 401, the rear end of the outer pipe sleeve 401 is integrally connected to a rectangular pipe 402, the bottom of the rectangular pipe 402 is provided with a sand outlet, and the side wall of the outer pipe sleeve 401 is provided with a first sand inlet 403; a first spiral rod 404 with spiral blades is installed inside the outer pipe sleeve 401 and on the axis, and a first gear 405 is fixedly installed on the front side of the outer pipe sleeve 401 at the front end of the first spiral rod 404; Figure 6 The figure shows the installation schematic diagram of the spiral sand supply pipe 4 with the first gear 405 removed. The spiral sand supply pipe 4 is installed in the upper part of the two baffles, close to the baffle plate 103, and the rear end of the spiral sand supply pipe 4 passes through the spiral pipe through hole 1012 opened on the first partition plate 101 and extends into the right seed supply chamber (such as Figure 8 Schematic diagram of the spiral tube through hole 1012 is shown); Figure 6 As shown, the second sand supply opening 1011 provided on the right baffle plate 1010 is close to the inner wall of the drum 1, and the first sand inlet 403 provided on the side wall of the outer tube sleeve 401 faces the second sand supply opening 1011; in addition, a first guide plate 1013 parallel to the right baffle plate 1010 and a second guide plate 1014 perpendicular to the right baffle plate 1010 are provided; the first guide plate 1013 is located on the left side of the outer tube sleeve 401, close to the side of the outer tube sleeve 401; the second guide plate 1014 is perpendicular to the second sand supply opening 1011, close to the first sand inlet 403 of the outer tube sleeve 401, and the free end of the second guide plate 1014 is suspended, and the sand is drained through the first guide plate 1013 and the second guide plate 1014;

[0081] The connection structure at the rear end of the spiral sand supply pipe 4 is as follows: Fig. 9 As shown, the rectangular tube 402 at the rear end of the outer tube sleeve 401 is located on the inner wall of the right seed supply chamber and is installed perpendicular to the inner wall of the drum 1. The sand outlet provided at the bottom of the rectangular tube 402 is connected to the duck mouth 5 installed on the drum 1.

[0082] like Fig.10 As shown, the left sand supply chamber on the left side of the drum 1 is also provided with a sand supply chamber front cover plate 6 for sealing the sand supply channel 104. The sand supply chamber front cover plate 6 is circular, and the center is a second through hole 601 connected to the sand storage chamber 105; the sand supply chamber front cover plate 6 is also provided with third through holes 602 corresponding to the three spiral sand supply tubes 4, and the front end of the first spiral rod 404 in the spiral sand supply tube 4 passes through the third through hole 602 to install the first gear 405;

[0083] like Fig.11The figure is a schematic diagram of the structure of the outer side of the front cover plate 6 of the sand supply chamber. A sand receiving box 7 (the front end cover of the sand receiving box 7 is removed) is installed at the outer side of the front cover plate 6 of the sand supply chamber and at the second through hole 601. The sand receiving box 7 is a cylindrical shell, the center of which is fixedly connected to the central axis 2 and does not rotate. A sand receiving pipe 701 is provided at the upper end of the sand receiving box 7. The sand receiving pipe 701 is connected to the inside of the sand receiving box 7, and the upper end of the sand receiving pipe 701 is open. A third sand supply opening 702 is provided at the lower part of the back plate behind the sand receiving box 7. The third sand supply opening 702 is connected to the inner cavity of the sand receiving box 7 and the sand storage cavity 105 behind it.

[0084] like Fig.11 As shown, a stirring part 8 is installed in the center of the sand receiving box 7, and the stirring part 8 includes a central annular sleeve 801 and stirring blades 802 evenly distributed on the annular sleeve 801. In this device, three stirring blades 802 are specifically arranged; the annular sleeve 801 is sleeved on the first connecting sleeve 102 extending from the center of the first partition 101 and around the central axis 2. The first connecting sleeve 102 is located in the center of the left sand supply chamber and rotates synchronously with the drum 1, so the stirring part 8 will also rotate synchronously;

[0085] like Fig.11 As shown, a circle of circular chain 9 is fixedly installed on the outer circumference of the sand receiving box 7, and the chain 9 is fixed; the three first gears 405 at the front ends of the three spiral sand supply tubes 4 and the chain 9 form a chain transmission, that is, the rotation of the drum 1 drives the three first gears 405 to rotate, and the three first gears 405 drive the first spiral rod 404 of the spiral sand supply tube 4 to rotate, and the spiral blades on the first spiral rod 404 push the sand in the tube into the rectangular tube 402 at the rear end;

[0086] The above structure is the part of the sand supply device arranged inside the drum 1 . The sand supply device also includes a part outside the drum 1 , specifically including a sand trough 10 and a sand delivery hose 11 .

[0087] like Figure 1 , 2 As shown, the sand trough 10 is fixedly mounted on the frame 3 and is located above the drum 1; the sand trough 10 is preferably designed as a U-shaped trough with an open top; a cylindrical sand supply pipe 1001 is provided at the bottom of the sand trough 10, and the sand supply pipe 1001 is parallel to the length direction of the sand trough 10 and has the same length, and a fourth sand supply port 1002 (such as Figure 4 As shown in FIG. 1 ), a fifth sand supply port 1003 is provided at the bottom of the sand supply pipe 1001 (as shown in FIG. 1 ). Figure 2As shown), the fifth sand supply port 1003 is connected to the sand receiving box 7 through the sand delivery hose 11, and the lower end of the sand delivery hose 11 is inserted from the upper end of the sand receiving pipe 701; a second spiral rod 1004 is installed in the sand supply pipe 1001 and on the axis, and the second spiral rod 1004 is provided with spiral blades. The rear end of the second spiral rod 1004 passes through the sand supply pipe 1001 and the rear end face is connected to the bearing on the frame 3, and the front end of the second spiral rod 1004 passes through the front end face of the sand supply pipe 1001 and is connected to the bearing on the frame 3; the front end of the second spiral rod 1004 is connected to a power source, such as a motor with a deceleration function, and the second spiral rod 1004 is driven to rotate by the power source.

[0088] The sand's path is: Figure 1 As shown, first, the sand is stored in the sand trough 10. When the drum 1 rolls forward on the ground, the power source of the second screw rod 1004 is turned on, the second screw rod 1004 rotates, and the spiral blades on the second screw rod 1004 push the sand in the sand supply pipe 1001 to be transported from the fifth sand supply port 1003 to the sand receiving box 7 below through the sand delivery hose 11; the sand in the sand trough 10 continuously replenishes the sand into the sand supply pipe 1001 through the fourth sand supply port 1002, and the speed of supplying sand to the sand receiving box 7 is controlled by controlling the rotation speed of the screw rod, so that the sand supply is controllable; thereafter, the stirring part 8 in the sand receiving box 7 rotates together with the drum 1, and the stirring part 8 pushes the sand in the sand receiving box 7 through the third sand supply opening 702 to the sand storage chamber 105 behind it; as shown in FIG. Figure 5 , 6 As shown, sand enters the unit sand supply channel 107 from the sand storage chamber 105 through the first sand supply opening 108, and enters the sand supply chamber 106 through the second sand supply opening 1011 opened on the right baffle 1010. Figure 7 As shown, the sand enters the outer sleeve 401 through the first sand inlet 403 provided on the side wall of the outer sleeve 401, is rotated and transported to the rectangular tube 402 at the rear end of the outer sleeve 401 by the first spiral rod 404, and falls into the duck mouth 5 from the opening at the lower end of the rectangular tube 402.

[0089] The above-mentioned air suction seed taking device and duck mouth 5 are prior art, such as a model 2BQP-2 air suction precision film laying and spot seeder designed by Hangjinhouqi Dabao Agricultural Machinery Manufacturing Co., Ltd. Therefore, the air suction seed taking device is briefly introduced below, mainly introducing the connection relationship with the sand supply device.

[0090] like Figure 1 As shown, the air suction seed taking device includes a part arranged on the drum 1 and a part arranged outside the drum 1; first, a seed suction disc 12 is installed inside the drum 1 and on the right side of the first partition 101, and the seed suction disc 12 is fixedly connected to the central axis 2 and is immovable. A vacuum chamber 14 is surrounded by a circular partition 13 between the first partition 101 and the seed suction disc 12, and the vacuum chamber 14 is rotatable relative to the seed suction disc 12; Figure 8 As shown, the periphery of the seed suction tray 12 is provided with equally spaced seed suction holes 1201 (three holes are provided in this device); Figure 3 As shown, an inoculation bucket 15 is provided on the inner circumference of the drum 1, and the number of the seed suction holes 1201 matches the number of the inoculation buckets 15; a duck mouth 5 corresponding to the inoculation buckets 15 is provided on the outer circumference of the drum 1, and the number of the duck mouths 5 matches the spacing of the crops; in this device, three seed suction holes 1201, three inoculation buckets 15, and three duck mouths 5 are specifically provided;

[0091] like Figure 1 , 3 As shown, a circular inoculation box 16 is installed outside the seed suction tray 12, and an inoculation chamber 1601 is formed between the inoculation box 16 and the seed suction tray 12 for temporary storage of seeds. Fig.12 The figure shows the internal structure of the inoculation box 16 (an existing product). A first seed inlet 1602 is provided at the lower right corner of the inoculation box 16, and a crescent-shaped baffle 1603 is provided inside. The crescent-shaped baffle 1603 and the inoculation box 16 shell form a channel, and the end of the channel is a seed outlet; Figure 3 As shown, the outer structure of the inoculation box 16 is that a vertically upward inoculation tube 1604 is provided on the outer side of the inoculation box 16, and the top of the inoculation tube 1604 is open. The inoculation box 16 is fixedly connected to the central axis 2 and is stationary;

[0092] like Fig.13 The figure shows the interior of the vacuum chamber 14, wherein the central axis 2 passes through the vacuum chamber 14; Fig.14 FIG. 2 is a schematic diagram of the three-dimensional structure of the central shaft 2. The central shaft 2 is a hollow tube, and a suction port 1 is provided at the left end thereof for connecting an external electric blower 22. A second suction hole 201 is provided on the tube wall of the central shaft 2 located in the vacuum chamber 14. The second suction hole 201 is used to suck out the gas in the vacuum chamber 14 to form a negative pressure. Fig.13 As shown, a blocking rod 17 for blocking the seed suction hole 1201 is fixedly connected to the central shaft 2, the upper end of the blocking rod 17 is fixedly connected to the central shaft 2 and does not rotate, and a plug 1701 is provided at the lower end of the blocking rod 17 to block the seed suction hole 1201, that is, the rotation path of the seed suction hole 1201 passes through the plug 1701;

[0093] like Fig.15 1 is a schematic diagram of the structure of the inoculation bucket 15 and the seed discharge conduit 18. The inoculation bucket 15 is arc-shaped and opens toward the center of the drum 1 to receive the seeds dropped from the inoculation box 16. Figure 3 As shown, the inoculation bucket 15 is fixedly mounted on the inner wall of the drum 1 and rotates with the drum 1; Fig.15 As shown, the seed discharge conduit 18 is a component connected to the discharge port of the inoculation bucket 15, and is used to introduce the seeds in the inoculation bucket 15 into the duck's mouth 5; Fig.16 , 17 The structure is shown in the figure, the seed discharge conduit 18 is composed of a front transverse tube 1801, a middle inclined section 1802, and a terminal vertical tube 1803. The front transverse tube 1801 is connected to the discharge port of the inoculation bucket 15, and the terminal end of the terminal vertical tube 1803 is the seed outlet, which is located in the duck mouth 5;

[0094] like Fig. 9 The structure of the sand supply device and the end of the air suction seed taking device and the duck mouth 5 is shown. The rectangular tube 402 at the end of the sand supply device and the seed discharge conduit 18 at the end of the air suction seed taking device are installed in the drum 1 and face the feed port on the upper part of the duck mouth 5.

[0095] like Fig.18 , 19 The figure shows a three-dimensional structural schematic diagram of the duckbill 5, which includes a fixed duckbill 501, a movable duckbill 502, a first spring pressure plate 503, and a first switch spring 504; the duckbill 5 is a shell structure with a cavity inside, and the right side is an openable and closable movable duckbill 502, and the first spring pressure plate 503 is fixedly connected to the movable duckbill 502; the first switch spring 504 is installed on the upper surface of the first spring pressure plate 503;

[0096] like Fig. 9 As shown, the duck mouth 5 is installed on the side wall of the drum 1, and the side wall of the drum 1 needs to be opened. The rectangular tube 402 at the end of the sand supply device and the seed discharge conduit 18 at the end of the air suction seed taking device are installed at the opening at the top of the duck mouth 5. The sand discharge port at the lower end of the rectangular tube 402 and the seed discharge port at the lower end of the seed discharge conduit 18 are in the opening at the top of the duck mouth 5. Fig. 9 The right side of the middle is a rectangular tube 402, and the left side is a seed discharge conduit 18;

[0097] In order to realize the process of covering the sunflower seeds with sand when sowing the seeds, a trigger mechanism 19 is also provided at the opening at the lower end of the rectangular tube 402. Figure 7 As shown, the trigger mechanism 19 includes a door panel 1901 disposed at the lower opening of the rectangular tube 402, the right side wall of the door panel 1901 is hingedly connected to the side wall of the rectangular tube 402, and an opening link 1902 is hingedly connected to the right edge of the door panel 1901; Fig. 9As shown, the trigger mechanism 19 also includes a second spring pressure plate 1903 and a second switch spring 1904. The second spring pressure plate 1903 is arranged on the left side of the first spring pressure plate 503. The left side of the second spring pressure plate 1903 is hinged on the side wall of the drum 1. The right side and the upper surface of the second spring pressure plate 1903 are hingedly connected to the lower end of the opening link 1902. The opening link 1902 passes through the wall of the drum 1 and is located on the right side of the rectangular tube 402 and is hinged to the right edge of the door panel 1901 of the rectangular tube 402. The second switch spring 1904 is connected to the rotating shaft where the opening link 1902 is hinged to the door panel 1901. The upper end of the second switch spring 1904 is fixedly connected to the rotating shaft, and the lower end is fixedly connected to the wall of the drum 1.

[0098] like Figure 1 As shown, the air suction seed taking device also includes a seed box 20 arranged outside the drum 1. The seed box 20 is a box with an open top for storing sunflower seeds. The seed box 20 is fixedly connected to the frame 3. The bottom of the seed box 20 is connected to the inoculation box 16 through a seed delivery hose 21. The lower end of the seed delivery hose 21 is inserted into the upper end opening of the inoculation tube 1604 on the right side of the inoculation box 16.

[0099] The air suction seed taking device also includes an electric fan 22 and an air suction duct 23 arranged outside the drum 1; Figure 1 As shown, the electric fan 22 is fixed on the frame 3, and the electric fan 22 is connected to the air intake port 1 at the left end of the central axis 2 through the air intake duct 23.

[0100] The following is an overview of the entire action process of the air suction seed taking device: Figure 1 As shown, first, sunflower seeds are stored in a seed box 20, and the seeds are transported to the inoculation chamber 1601 in the inoculation box 16 through the seed delivery hose 21 at the bottom; after the electric fan 22 is started, the electric fan 22 sucks out the gas in the vacuum chamber 14 through the air suction duct 23 and the central axis 2 to form a negative pressure; the seed suction hole 1201 on the seed suction plate 12 sucks a seed from the inoculation chamber 1601 and rotates with the drum 1, when the plug 1701 set at the lower end of the air blocking rod 17 blocks the seed suction hole 1201 during the rotation of the vacuum chamber 14, the seeds adsorbed by the seed suction hole 1201 will lose suction and fall into the inoculation bucket 15, and the seeds in the inoculation bucket 15 enter the seed discharge duct 18 during the rotation of the drum 1, and finally fall into the duck's mouth 5.

[0101] like Fig. 9As shown, since a trigger mechanism 19 is also provided at the opening at the lower end of the rectangular tube 402, the sand will not fall into the duck mouth 5 immediately. During the counterclockwise rotation of the drum 1, only when the second spring pressure plate 1903 is compressed, the second spring pressure plate 1903 pushes the opening link 1902 to move upward, and the opening link 1902 drives the door plate 1901 at the opening at the lower end of the rectangular tube 402 to rotate counterclockwise and open, the sand will fall into the duck mouth 5; when the opening link 1902 moves upward, the second switch spring 1904 will be stretched at the same time, and when the second spring pressure plate 1903 leaves the ground, it will reset and the door plate 1901 will close; therefore, the seeds will enter the duck mouth 5 first, and then the sand will enter;

[0102] The drum 1 continues to roll and presses the first spring pressure plate 503, which drives the movable duckbill 502 to open, sowing sand and seeds together into the ground; the first switch spring 504 plays a resetting role.

[0103] It should be noted that the present invention mainly realizes the mechanized operation process of covering seeds with sand when sowing sunflower seeds by adding a sand supplying device, and does not limit the structure of the seed taking device, that is, it is not limited to an air suction seed taking device, and other types of seed taking structures are also acceptable. After the seed taking device takes the seeds into the duck's mouth 5, sand is supplied into the duck's mouth 5 through the sand supplying device of the present invention, and finally the duck's mouth 5 is used to sow the seeds covered with sand into the ground.

[0104] Further, if Figure 4 As shown, the device can be symmetrically provided with two rollers 1, or more rollers 1 can be provided to sow multiple rows simultaneously, and the device can be used by being towed by a tractor.

[0105] Further, if Fig.11 As shown, in order to prevent the drum 1 from slipping, a circle of short rods 24 is arranged on the outer side wall of the drum 1. When the drum 1 rolls, the short rods 24 are inserted into the ground.

[0106] Although the present invention has been described in detail with reference to the aforementioned examples, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sunflower sowing device for red soil in the Hetao region, comprising a drum, a central axis, a frame, a seed taking device, and a duck mouth, characterized in that: A sand supply device is also provided; The drum is cylindrical in shape, and a first partition is arranged inside the drum to divide the inside of the drum into a left sand supply chamber on the left and a right seed supply chamber on the right, and a central shaft is installed in the center of the first partition and on the axis of the drum, and the first partition and the central shaft are rotatably connected through a bearing; the central shaft is fixedly connected to the frame and is immovable, and the drum can rotate around the central shaft; A circle of first connecting sleeves is extended around the central axis in the left sand supply chamber on the left side of the drum, in the center of the first partition, and around the central axis. The first connecting sleeve is located in the center of the left sand supply chamber and rotates synchronously with the drum; a circular baffle is arranged in the center of the left sand supply chamber and around the first connecting sleeve, and the baffle is fixedly connected to the first partition. The baffle further divides the left sand supply chamber into an outer sand supply channel and an internal sand storage cavity. Three sand supply chambers are evenly distributed in the sand supply channel, each of which is surrounded by two partitions. There are unit sand supply channels between adjacent sand supply chambers, and a first sand supply opening connected to the inside of the sand storage cavity is opened in the center of each unit sand supply channel; The sand supply chamber comprises a left baffle and a right baffle, wherein a second sand supply opening is provided on the right baffle, and the second sand supply opening is connected to the sand supply chamber and the unit sand supply channel on the right side thereof; a spiral sand supply pipe is installed in the sand supply chamber, and the spiral sand supply pipe is installed perpendicular to the first partition; The spiral sand supply pipe comprises a cylindrical outer pipe sleeve, the rear end of the outer pipe sleeve is integrally connected to a rectangular pipe, the bottom of the rectangular pipe is provided with a sand outlet, and a first sand inlet is provided on the side wall of the outer pipe sleeve; a first spiral rod with spiral blades is installed inside the outer pipe sleeve and on the axis, and the front end of the first spiral rod passes through the front side of the outer pipe sleeve and is fixedly installed with a first gear; the spiral sand supply pipe is installed on the upper inner part of the two baffles and close to the surrounding baffle, and the rear end of the spiral sand supply pipe passes through the spiral pipe through hole opened on the first baffle and extends into the right seed supply chamber; the second sand supply opening opened on the right baffle is close to the inner wall of the drum, and the first sand inlet provided on the side wall of the outer pipe sleeve faces the second sand supply opening; in addition, a first guide plate parallel to the right baffle and a second guide plate perpendicular to the right baffle are provided; the first guide plate is located on the left side of the outer pipe sleeve and close to the side of the outer pipe sleeve; the second guide plate is perpendicular to the second sand supply opening and close to the first sand inlet of the outer pipe sleeve, and the free end of the second guide plate is suspended, and the sand is drained through the first guide plate and the second guide plate; The rectangular tube at the rear end of the outer tube sleeve is located on the inner wall of the right seed supply chamber and is installed perpendicular to the inner wall of the drum. The sand outlet provided at the bottom of the rectangular tube is connected to the duck mouth installed on the drum. The left sand supply chamber on the left side of the drum is also provided with a front cover plate for the sand supply chamber to seal the sand supply channel. The front cover plate of the sand supply chamber is circular, and the center is a second through hole connected to the sand storage cavity; the front cover plate of the sand supply chamber is also provided with a third through hole corresponding to the three spiral sand supply pipes, and the front end of the first spiral rod in the spiral sand supply pipe passes through the third through hole to install the first gear; a sand receiving box is installed on the outside of the front cover plate of the sand supply chamber and at the second through hole. The sand receiving box is a cylindrical shell, and its center is fixedly connected to the central axis and does not rotate; a sand receiving pipe is provided at the upper end of the sand receiving box, and the sand receiving pipe is connected to the inside of the sand receiving box, and the upper end of the sand receiving pipe is open; a third sand supply opening is provided at the lower part of the back plate behind the sand receiving box, and the third sand supply opening is connected to the inner cavity of the sand receiving box and the sand storage cavity; A stirring part is installed in the center of the sand receiving box, and the stirring part includes a central annular sleeve and stirring blades evenly distributed on the annular sleeve; the annular sleeve is sleeved on the first connecting sleeve, and the first connecting sleeve is located in the center of the left sand supply chamber and rotates synchronously with the drum, so the stirring part will also rotate synchronously; A circle of circular chain is fixedly installed on the outer circumference of the sand box, and the chain is fixed; the three first gears at the front ends of the three spiral sand supply pipes and the chain form a chain transmission, that is, the rotation of the drum drives the three first gears to rotate, and the three first gears drive the first spiral rods of the spiral sand supply pipes to rotate, and the spiral blades on the first spiral rods push the sand in the pipe into the rectangular pipe at the rear end; The sand supply device also includes parts outside the drum, specifically including a sand trough and a sand delivery hose; The sand trough is fixedly installed on the frame and is located above the drum; the top of the sand trough is open; a cylindrical sand supply pipe is provided at the bottom of the sand trough, the sand supply pipe is parallel to the length direction of the sand trough and is of equal length, a fourth sand supply port connected to the sand supply pipe is provided at the bottom of the sand trough, a fifth sand supply port is provided at the bottom of the sand supply pipe, the fifth sand supply port is connected to the sand receiving box through a sand delivery hose, and the lower end of the sand delivery hose is inserted from the upper end of the sand receiving pipe; a second spiral rod is installed inside the sand supply pipe and on the axis, and a spiral blade is provided on the second spiral rod, the rear end of the second spiral rod passes through the rear end face of the sand supply pipe and is connected to the bearing on the frame, and the front end of the second spiral rod passes through the front end face of the sand supply pipe and is connected to the bearing on the frame; the front end of the second spiral rod is connected to a power source, and the second spiral rod is driven to rotate by the power source; The seed taking device is arranged in the right seed supply chamber of the drum, and the seed taking device is used to select seeds and deliver them into the duck's mouth; The duckbill comprises a fixed duckbill, a movable duckbill, a first spring pressure plate, and a first switch spring; the duckbill is a shell structure with a cavity inside, and the right side is a movable duckbill that can be opened and closed, and the first spring pressure plate is fixedly connected to the movable duckbill; the first switch spring is installed on the upper surface of the first spring pressure plate; the duckbill is installed on the side wall of the drum; In addition, a trigger mechanism is also provided at the opening at the lower end of the rectangular tube of the spiral sand supply tube, and the trigger mechanism includes a door panel arranged at the opening at the lower end of the rectangular tube, the right side wall of the door panel is hingedly connected to the side wall of the rectangular tube, and an opening connecting rod is hingedly connected to the right edge of the door panel; the trigger mechanism also includes a second spring pressure plate and a second switch spring, the second spring pressure plate is arranged on the left side of the first spring pressure plate, the left side of the second spring pressure plate is hinged on the side wall of the drum, the right side and the upper surface of the second spring pressure plate are hingedly connected to the lower end of the opening connecting rod, the opening connecting rod passes through the drum wall, is located on the right side of the rectangular tube, and is hinged to the right edge of the door panel of the rectangular tube, and the second switch spring is connected to the rotating shaft of the hinged connection between the opening connecting rod and the door panel, the upper end of the second switch spring is fixedly connected to the rotating shaft, and the lower end is fixedly connected to the drum wall; Specifically, three stirring blades are arranged in the device, and the sand trough is designed as a U-shaped trough.

2. The sunflower sowing device for red soil in the Hetao region according to claim 1, characterized in that: The seed taking device is an air suction type seed taking device, including a part arranged on the drum and a part arranged outside the drum; First, a seed suction disc is installed inside the drum and on the right side of the first partition. The seed suction disc is fixedly connected to the central axis and is immovable. A vacuum chamber is formed between the first partition and the seed suction disc by a circular partition, and the vacuum chamber rotates relative to the seed suction disc; equidistant seed suction holes are arranged on the periphery of the seed suction disc; inoculation buckets are arranged on the inner circumference of the drum, and the number of seed suction holes matches the number of inoculation buckets; duck mouths corresponding to the inoculation buckets are arranged on the outer circumference of the drum, and the number of duck mouths matches the spacing of the crops; A circular inoculation box is installed on the outside of the seed suction tray, and an inoculation chamber is formed between the inoculation box and the seed suction tray for temporarily storing seeds. A first seed inlet is provided at the lower right corner of the inoculation box, and a crescent-shaped baffle is also provided inside the inoculation box. The crescent-shaped baffle and the inoculation box shell form a channel, and the end of the channel is a seed outlet; a vertical upward inoculation tube is provided on the outside of the inoculation box, and the top of the inoculation tube is open. The inoculation box is fixedly connected to the central axis and is fixed; The central axis passes through the vacuum chamber; the central axis is a hollow tube, and a suction port is provided at the left end thereof for connecting an external electric blower; a second suction hole is provided on the tube wall of the central axis in the vacuum chamber, and the second suction hole is used to suck out the gas in the vacuum chamber to form a negative pressure; a gas blocking rod for blocking the seed suction hole is fixedly connected to the central axis, and the upper end of the gas blocking rod is fixedly connected to the central axis and does not rotate, and a plug is provided at the lower end of the gas blocking rod, which can block the seed suction hole, that is, the rotation path of the seed suction hole passes through the plug; The inoculation bucket is arc-shaped and opens toward the center of the drum to receive the seeds dropped from the inoculation box. The inoculation bucket is fixedly mounted on the inner wall of the drum and rotates with the drum. The seed discharge guide tube is a component connected to the discharge port of the inoculation bucket and is used to guide the seeds in the inoculation bucket into the duck's mouth. The seed discharge conduit is composed of a front horizontal tube, a middle inclined section, and a terminal vertical tube. The front horizontal tube is connected to the discharge port of the inoculation bucket, and the terminal end of the terminal vertical tube is the seed outlet, which is located in the duck's mouth. The rectangular tube at the end of the sand supply device and the seed discharge conduit at the end of the air suction seed taking device are installed in the drum, facing the feed inlet at the upper part of the duck's mouth; A rectangular tube at the end of a sand supply device and a seed discharge conduit at the end of an air suction seed taking device are installed at the opening at the upper part of the duck's mouth, and a sand discharge port at the lower end of the rectangular tube and a seed discharge port at the lower end of the seed discharge conduit are in the opening at the upper part of the duck's mouth; The air suction seed taking device also includes a seed box arranged outside the drum, the seed box is a box with an open top, used to store sunflower seeds, the seed box is fixedly connected to the frame, the bottom of the seed box is connected to the inoculation box through a seed delivery hose, and the lower end of the seed delivery hose is inserted into the upper end opening of the inoculation tube on the right side of the inoculation box; The air suction seed taking device also includes an electric fan and an air suction duct arranged outside the drum; the electric fan is fixed on the frame, and the electric fan is connected to an air suction port 1 at the left end of the central axis through the air suction duct.

3. The sunflower sowing device for red soil in the Hetao region according to claim 2, characterized in that: The device is specifically provided with 3 seed suction holes, 3 inoculation buckets and 3 duck mouths.

4. The sunflower sowing device for red soil in the Hetao region according to claim 3 is characterized by: The device has two rollers symmetrically arranged.

5. The sunflower sowing device for red soil in the Hetao region according to any one of claims 1 to 4, characterized in that: A circle of short rods is arranged on the outer side wall of the drum, and when the drum rolls, the short rods are inserted into the ground.

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