Tray hole type precision dibbler

Abstract

The invention relates to the field of agricultural machinery, in particular to a tray hole type precision dibbler which mainly comprises a dibbling nozzle and is characterized by further comprising a driving tray, a driven tray ring, a seed blocking cover, a seed guiding and dibbling combined device and a seed taking combined device, and the seed guiding and dibbling combined device and the seed taking combined device are used in cooperation with the dibbling nozzle. The seed guiding and dibbling combined device mainly comprises a seed guiding module and a dibbling pressure plate which are matched with the dibbling nozzle for use; the seed taking combined device is mounted on the inner side of a seed blocking cover of the dibbler and mainly comprises a core disc, a seed taking disc and a seed blocking disc, the dibbling device is reasonable in structure, economical, practical, flexible, convenient and stable in performance, precise seed taking is achieved, accurate dibbling and seed metering can be completed, all sub-components of the dibbling device are stably assembled, accessories are convenient to replace and maintain, and the seed guiding and dibbling combined device and the seed taking combined device are matched with each other and form an organic whole with the driving disc, the auxiliary driving disc ring and the seed blocking cover. The working efficiency is higher, and the whole dibbling operation efficiency and quality of the dibbler can be improved.

Description

Technical Field

[0001] The invention relates to the field of sowing agricultural machinery, in particular to a disc-type precision seeding device used on a seeding machine. Background Art

[0002] In the prior art, precision seeders have been well used in agricultural crop seeding operations. The main components of precision seeders usually include a moving disk, a fixed disk, a seed chamber, and a seeding nozzle. The moving disk is buckled together with the fixed disk, and the seed chamber is provided with a seed taking device, which is connected to the seeder frame through the fixed disk. The seeding nozzle mainly includes a fixed nozzle and a moving nozzle. The moving nozzle is hinged on the fixed nozzle and can be rotated along the hinge point to complete the opening and closing of the seed outlet. When the seed taking device of the seeding device throws the seeds into the fixed nozzle, the seeds will automatically slide down and fall into the seed hole from the seed outlet to complete the seeding process. Usually, the fixed nozzle and the moving nozzle are used in combination. When seeding on the film, a film hole should be cut on the surface of the ground film, and the seeds should be planted in the soil in the middle of the film hole.

[0003] In recent years, the disc hole type precision spot seeder has been increasingly used in the spot seeding of agricultural crops, and the improvement of its sub-components has become more and more perfect, wherein the seed taking and spot seeding components can cooperate with each other to achieve the technical effect of precision spot seeding. In order to achieve a better precision sowing technical effect, the present invention combines the various components of the disc hole type precision spot seeder, such as the seed taking, seed guiding, and spot seeding devices, to better achieve high precision and high quality in the precision spot seeding operation, and can also save seeds, and the seedlings emerge neatly without holes or dislocations, so that the sowing efficiency is higher and the seedling quality is better. Summary of the invention

[0004] The purpose of the present invention is to provide a disc-hole type precision seeding device which has a reasonable structure, is economical and practical, has more complete seed guiding and seed spotting functions, has higher working efficiency through mutual cooperation of various sub-components, and can improve the quality of seed spotting operations.

[0005] The invention discloses a disc hole type precision seeding device, which mainly comprises a seeding nozzle, an active disc, an auxiliary disc ring, a seed blocking cover, a seed guiding and seeding combination device and a seed taking combination device used in conjunction with the seeding nozzle.

[0006] The seed guiding and seed spotting combined device mainly comprises a seed guiding module and an acupoint pressing plate used in conjunction with the seed spotting nozzle; The acupoint pressing plate mainly comprises an annular body, the outer periphery of which is provided with a flange, and a plurality of acupoint insertion holes are provided along the circumferential direction of the flange; an acupoint mark is provided on the upper surface of the flange at a position corresponding to each acupoint insertion hole.

[0007] The seed guide module mainly includes a module body, which includes a horizontal plate I, a horizontal plate II, and a vertical plate. The horizontal plate I and the horizontal plate II are both vertically arranged on the vertical plate. The horizontal plate II is provided with a threaded hole. The length of the horizontal plate II is shorter than that of the vertical plate. At one end of the horizontal plate I, a horizontal plate bending block that bends downward is provided; at one end of the vertical plate and close to the horizontal plate bending block, a vertical plate bending block that bends inward is provided, and the shape and size of the vertical plate bending block are compatible with the shape and size of the acupoint socket on the acupoint pressure plate; the outer side surface of the vertical plate is the seed guide surface.

[0008] A plurality of seed guide modules are distributed along the circumferential direction of the acupoint pressure plate, and a vertical plate of each seed guide module is bent into a card block and embedded in the acupoint socket on the acupoint pressure plate; the other end of each seed guide module is fixedly connected to a seeding nozzle, and a seed guide surface of the seed guide module is obliquely arranged on one side of the seed inlet of the seeding nozzle.

[0009] The seed taking assembly device is installed on the inner side of the seed blocking cover of the seeding device, and mainly comprises a core plate, a seed taking plate, and a seed blocking plate; The core disk is a bowl-shaped disk body, which includes a core disk body, on which a bearing mounting hole, a positioning screw, and a positioning convex edge arranged on the inner side; the seed-blocking disk is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-casting recess; the seed-blocking disk is buckled on the outer periphery of the positioning convex edge of the core disk and is detachably connected.

[0010] The seed taking plate is a circular plate body, on which a seed guide module mounting hole is provided, and a plurality of seed taking openings in the shape of notches are evenly distributed around the inner circle of the seed taking plate, and the openings of the seed taking openings are arranged in a clockwise or counterclockwise direction.

[0011] The lower part of the seed taking port is the seed taking hole, and the seed taking hole is composed of a built-in seed taking nest and a trumpet-shaped seed discharge port. The central axis of the seed taking nest and the seed discharge port is set in an inclined direction, and the opening faces the inner wall of the seed taking plate; the seed taking nest is arranged at the bottom of the seed taking hole, and its shape is a concave nest with a geometric shape similar to that of half a truncated cone, the concave nest has a small bottom and a large upper mouth, and the upper part of the seed taking nest extends and expands upward to form an incomplete trumpet-shaped seed discharge port.

[0012] The lower bottom of the seed taking nest, which is located at the outer side of the seed taking hole, is provided with a seed blocking wall protruding outwards, and the shape is an arc-shaped protrusion that is approximately semicircular.

[0013] The front end of the seed removal port is transitioned forward to be provided with a seed cleaning slope, which is an inclined extension surface, and one side of the rear end of the seed removal port is provided with a seed scraping angle, which is a wedge-shaped body, one surface of which is a part of the annular inner circumference, and the other surface is the upper end of the rear side wall surface of the seed removal hole. The above two surfaces extend and transition to form an intersection, and after the intersection, an angle is formed, which is a wedge-shaped angle A, and the wedge-shaped angle A is an acute angle.

[0014] The seed taking plate is buckled on top of the seed blocking plate, and the seed taking plate can rotate along the circumferential direction of the seed blocking plate. During the rotation of the seed taking plate, the seeds in the seed taking hole of the seed taking plate rotate together with the seed taking plate. When passing through the seed dropping recess of the seed blocking plate, the seeds fall from the seed taking hole along the seed discharge port into the seed dropping recess.

[0015] Preferably, the active disk is a basin-shaped disk body and an active disk shaft. The basin-shaped disk body is provided with a main and auxiliary active disk connecting rod hole I and an acupoint pressure disk fixing installation hole. The outer center of the basin-shaped disk body is provided with a concave axial hole, and the inner center is provided with a protruding shaft sleeve. The axial hole is communicated with the shaft sleeve. The inner side surface of the basin-shaped disk body is provided with an annular groove for the seed nozzle and an annular groove for the seed guide module; the shape and size of the horizontal plate bending block of each of the seed guide modules are adapted to the shape and size of the annular groove of the seed guide module; the horizontal plate bending block of each of the seed guide modules is embedded in the annular groove of the seed guide module along the circumferential direction.

[0016] The auxiliary moving disc ring is an annular disc body, provided with a main and auxiliary moving disc connecting rod hole II, and a seeding nozzle insert positioning groove on the inner side.

[0017] The seed retaining cover comprises a cover body, on which a central axis hole, a seed inlet, a seed inlet observation port, a seed quantity regulator fixing hole, a seed adjustment fan-shaped hole, a seed adjustment digital mark, and a seed cleaning port are mainly provided; a seed retaining cover centering block is provided at the central axis hole, a seed quantity regulator is provided at the seed quantity regulator fixing hole, and the seed inlet is connected to a seed inlet elbow; the seed quantity regulator structure comprises a sheet body, on which a regulator fan-shaped hole, a regulator rotation centering hole, a digital observation hole, a seed quantity adjustment connecting pin hole, and a regulator convex plate are provided; the regulator fan-shaped hole on the seed quantity regulator is connected to the seed quantity regulator fixing hole on the seed retaining cover through a regulator fixing screw; the seed quantity regulator connecting pin hole on the seed quantity regulator is connected to the seed adjustment fan-shaped hole on the seed retaining cover through a positioning screw on the core disk; the regulator rotation centering hole on the seed quantity regulator is sleeved on the central axis hole on the seed retaining cover.

[0018] The seed taking combination device is arranged on the inner side of the seed blocking cover, and the space between the core disk and the seed blocking cover is the seed chamber. The positioning screw of the core disk passes through the seed adjustment fan-shaped hole on the seed blocking cover and the seed amount adjustment connecting pin hole on the seed amount regulator, and is fixed by a nut. The bearing mounting hole of the core disk is provided with a core disk bearing I and a core disk bearing II. The shaft sleeve of the active disk is connected to the core disk through the core disk bearing I and the core disk bearing II, and a core disk retaining spring is provided on the outer side of the core disk bearing II.

[0019] The seed guiding and seeding combination device is located between the active disk and the seed taking combination device, wherein the seed taking disk and the seed guiding module are fixedly connected by means of screws passing through the threaded holes of the horizontal plate I and the mounting holes of the seed guiding module; the acupuncture point pressure plate and the active disk are fixedly connected by means of screws passing through the pressure plate fixing holes and the acupuncture point pressure plate fixing holes; the auxiliary movable disk ring is arranged on the outer periphery of the seed blocking cover, and the active disk and the auxiliary movable disk ring are fixedly connected by means of the main and auxiliary movable disk connecting rods passing through the main and auxiliary disk connecting rod holes I and the main and auxiliary movable disk connecting rod holes II.

[0020] Preferably, a seed pusher is further provided on the inner side of the seed blocking cover, and the seed pusher structure includes a base, a truncated cone-shaped body, and a fastening screw hole. The pusher is made of rubber elastic material and is located between the seed inlet and the seed cleaning port.

[0021] Preferably, in the seed guide and seeding combination device, the acupoint sockets are in the shape of square recessed holes; the upper surface of the annular body of the acupoint pressure plate is provided with 360-degree scale lines along the circumferential direction, and the acupoint sockets are evenly distributed on the flange, and the number of the acupoint sockets is 12, 13, 14, 15, 16, 18, 20, 24, 26, 28 or 30; correspondingly, on the upper surface of the flange, at the position corresponding to each acupoint socket, there are acupoint marks in the form of Arabic numerals, and the Arabic numerals are 12, 13, 14, 15, 16, 18, 20, 24, 26, 28 or 30.

[0022] Preferably, in the seed guide and seeding combination device, the acupoint sockets are in the shape of square recessed holes; the upper surface of the annular body of the acupoint pressure plate is provided with 360-degree scale lines along the circumferential direction, and a plurality of groups of evenly distributed acupoint sockets are provided on the flange, and the plurality of groups refer to: the number of evenly distributed acupoint sockets can be any two or more of 12, 13, 14, 15, 16, 18, 20, 24, 26, 28, and 30; correspondingly, on the upper surface of the flange, at the position corresponding to each acupoint socket, acupoint markings are provided in the form of Arabic numerals, which are 12, 13, 14, 15, 16, 18, 20, 24, 26, 28, or 30.

[0023] Preferably, the seeding nozzle is a cockscomb knife membrane-breaking seeding nozzle, mainly comprising: a movable nozzle, a fixed nozzle, and an opening and closing device; wherein the front end of the movable nozzle is a groove-shaped end, the front end of the fixed nozzle is also a groove-shaped end, the movable nozzle and the fixed nozzle are hinged, and the groove-shaped end of the movable nozzle is wrapped in the groove-shaped end of the fixed nozzle, and the movable nozzle and the fixed nozzle are buckled to form a seed delivery chamber; the opening and closing device is installed between the movable nozzle and the fixed nozzle to open or buckle the movable nozzle and the fixed nozzle; the lower part of the fixed nozzle is connected to a positioning plug plate with a seed inlet, and the seed guide surface of the seed guide module is inclined to one side of the seed inlet of the seeding nozzle, so that the seeds sliding down through the seed guide surface enter the seed inlet of the seeding nozzle; the shape and size of the positioning plug plate are adapted to the shape and size of the annular slot of the seeding nozzle on the active disk; the positioning plug plate of each seeding nozzle is embedded in the annular slot of the seeding nozzle along the circumferential direction.

[0024] Preferably, in the seeding nozzle structure, the specific structure of the fixed nozzle and the movable nozzle is: the cross-sectional shape of the groove-shaped ends of the fixed nozzle and the movable nozzle are both arc-shaped, which are a thin plate bent into an arc to form a groove shape, and its front edge is an arc-shaped arc, and the groove-shaped end is provided with a knife-shaped edge, and the knife-shaped edge is a double-edged edge or a single-edged edge; the groove-shaped ends of the fixed nozzle and the movable nozzle are interlocked with each other in a bite-shaped shape.

[0025] The back sides of the grooved ends of the fixed nozzle and the movable nozzle are both provided with film-breaking blades. The film-breaking blade on the fixed nozzle is a cockscomb-shaped blade body when viewed from the side. The pointed end of the cockscomb-shaped blade body is arranged outward, and the two side edges of the cockscomb-shaped blade body have cutting edges to form a side knife and an upper knife. The upper knife is higher than the top of the grooved end of the fixed nozzle and extends toward the opening direction of the movable nozzle.

[0026] The fixed nozzle and the movable nozzle are hinged by a hinge, and the hinge comprises a small hinge plate, a large hinge plate, and a hinge shaft. The fixed nozzle is fixedly connected to the large hinge plate, and the movable nozzle is fixedly connected to the small hinge plate.

[0027] The opening and closing device is a compression spring. A spring fixing plate is provided on the fixed nozzle. One end of the compression spring is fixed on the spring fixing plate of the fixed nozzle, and the other end is fixed on the small hinge plate.

[0028] Preferably, in the seed guide and seed spotting combination device, the seed guide surface of the seed guide module is obliquely arranged on the side of the seed inlet of the seed spotting nozzle, and is arranged close to the back of the fixed nozzle and on the same side as the film breaking blade of the fixed nozzle, so that the seed guide surface and the cut surface of the back of the fixed nozzle form an angle A, and the angle A is an obtuse angle greater than 90 degrees; the horizontal plate bending block of the seed guide module is embedded in the annular groove of the seed guide module along the circumferential direction, so that the seed guide surface and the tangent direction of the embedding point of the horizontal plate bending block in the annular groove of the seed guide module form an angle B, and the angle B is an obtuse angle greater than 90 degrees.

[0029] Preferably, in the seed collection combination device, its structure also includes a seed cleaning brush and a seed remover, and the seed cleaning brush and the seed remover are both arranged on the inner side of the seed blocking cover and fixedly connected to the seed blocking cover, and the positions of the seed cleaning brush and the seed remover are both arranged close to the seed collection tray.

[0030] Preferably, the structure of the seed cleaning brush includes bristles and a bristle base, and the structure of the seed remover includes a seed removing head and a spring body. The seed cleaning brush is fixed on the seed blocking cover, and the bristles are facing the seed taking disk. In the rotation direction of the seed taking disk, the installation position of the seed cleaning brush is close to the seed cleaning slope of the seed taking disk; the seed remover, the seed removing head is facing the seed taking disk, and the installation position of the seed remover on the seed blocking cover is closer to the seed inlet on the seed blocking cover than the installation position of the seed cleaning brush.

[0031] Preferably, in the seed removal combination device, the seed cleaning slope of the seed removal plate is an arc-shaped beveled slope extending obliquely from the outer wall toward the annular inner circumference; the evenly distributed seed removal ports have an acute angle B formed by their opening shape; the core plate is fixedly connected to the seed retaining cover by the positioning screw, and the inner side of the core plate body is provided with reinforcing ribs.

[0032] With reference to the embodiments, the structure and working principle of the present invention are specifically described as follows: In the structure of the present invention, the active disk 19 and the auxiliary movable disk ring 2 are equivalent to the movable disk of the seed drill in the prior art, the core disk 5 and the seed blocking cover 7 are equivalent to the fixed disk in the prior art, and the seed nozzle 1 is clamped between the active disk 19 and the auxiliary movable disk ring 2, and is fixedly connected to the seed drill frame through the shaft on the seed blocking cover 7.

[0033] In the seed guiding and seeding combined device described in the present invention, a pressure plate fixing hole 22 is provided on the acupoint pressure plate 4, and the acupoint pressure plate 4 is fixedly connected to the active plate of the precision seeding device through the pressure plate fixing hole 22, that is, it is fixed to the acupoint pressure plate fixing installation hole 17 on the active plate 19.

[0034] The seeding nozzle is inserted into the seeding nozzle annular slot 16 on the active disk 19 by using the positioning plug plate at the bottom, and the seeding nozzle seed inlet 17 is connected to the seed guiding surface 1-16 of the seed guiding module, so that the seeds can enter the seeding nozzle along the seed guiding surface. The seeding nozzle 1, the seed guiding module 21 and the active disk and the auxiliary dynamic disk are connected in this pluggable manner, which is convenient for replacing the seeding nozzle 1 and the seed guiding module 21. Since the positioning plug plate provided under the fixed nozzle of the present invention is used, the fixed nozzle and the dynamic nozzle are hinged, and the entire seeding device is easy to replace and has strong practicality. In addition, the horizontal plate bending block on the seed guide module is inserted into the annular groove of the seed guide module of the active disk, and the vertical plate bending block 1-4 of each of the seed guide modules is embedded in the acupoint socket on the acupoint pressure plate 4; the entire seeding nozzle 1 and the seed guide module 21 are clamped between the active disk 19 and the auxiliary disk ring 2, and the acupoint pressure plate 4 and the active disk 19 are used to fix the components up and down, so that the installation position of the seed guide module 21, the seeding nozzle 1 and the acupoint pressure plate 4 is stable, the replacement is convenient, and the practicality is strong.

[0035] During operation, the seeds enter the seeding disc 3 from the seed chamber of the precision seeding device, and then fall on the seed guiding surface of the seed guiding module 21 through the seed guiding notch 5-3 of the core disc 5, and enter the seeding nozzle 1 along the seed guiding surface. The acupuncture point pressure disc 4 is fixedly connected to the active disc 19 of the precision seeding device through the pressure disc fixing hole 22. The lower part of the seed guiding module 21 is fixed tightly against the inner wall of the active disc 19, so the lower part of the seed guiding module 21 is closed, and the outer side is blocked by the auxiliary dynamic disc ring, so the seeds can smoothly enter the seed inlet 1-17 of the seeding nozzle from the seed guiding surface 1-16.

[0036] In the seed taking assembly device described in the present invention, the core disk 5 is provided with a positioning screw 13, and the positioning screw 13 is fixedly connected to the seed quantity regulator 8 on the seed blocking cover 7 of the sowing device. The seed taking disk 3 is provided with a seed guide module mounting hole 3-1, which is fixedly connected to the threaded hole 1-3-1 on the seed guide module. The seed taking disk 3 is buckled above the seed blocking disk 5-4, and the seed taking disk 3 can rotate along the circumferential direction of the seed blocking disk 5-4. There is a seed chamber between the seed taking disk and the seed blocking cover. As the seed taking disk 3 rotates, the seed taking nest of the seed taking disk 3 takes seeds from the seed chamber, and the seeds in the seed taking nest 3-13 rotate with the seed taking disk 3. The pusher 7-12 is used to push the seeds. The seed blocking disk 5-4 is blocked below, and the seeds in the seed taking nest 3-13 will not fall down. The seeds will rotate with the movement of the seed taking disk 3. When passing through the seeding recess of the core disk 5, the seeds fall from the seed taking nest 3-13 along the seed discharge port 3-12 into the seeding recess 5-3. At the same time, the seed cleaning brush 28 fixed at the end of the seeding notch in the direction of the rotation route can scrape off the excess seeds that have not fallen off, so that the excess seeds fall back into the seed chamber. The seeds that fall into the seeding notch will enter the seeding nozzle along the seeding channel and be planted in the soil. The function of the seeding device 29 is that after the seeds are taken from the seeding hole, the seeds naturally slide down the seeding nozzle guide surface at a slow speed, and the seeding speed can be accelerated by the seeding device.

[0037] The seed taking tray 3 provided by the present invention, when in use, seeds are put into the seed chamber 6 of the spot seeder, and when the spot seeder rotates, the scraping angle 3-4 scrapes the seeds into the seed taking holes 3-8 of the seed taking tray 3, and during rotation, the excess seeds are removed by the seed clearing inclined surface 3-5, and the accurately pre-selected seeds are blocked by the seed blocking wall 3-3 and retained in the concave seed taking nest 3-13 with a semi-conical geometric shape. As the seed taking nest 3-13 rotates, the seeds roll from the bottom of the seed taking nest 3-13 to the nest mouth, and since the seed taking nest 3-13 is in the semi-conical geometric shape, its outlet is large, and the seeds can be delivered to the seed discharge port 3-12, that is, the trumpet-shaped seed discharge channel, and the seeds slide down along the trumpet-shaped seed discharge channel, and the process of seed taking and seed discharge is successfully completed.

[0038] The seed taking combination device provided by the present invention utilizes the mutual cooperation of the core plate 5 and the seed taking plate 3 to complete the accurate seed taking with high quality, which provides the prerequisite for the precise sowing of the spot seeding operation, ensures that the spot seeding device saves seeds and there are no empty holes during operation, and because the whole process from seed feeding to seed taking is short and the process is fast, sowing can be avoided, thus ensuring accurate sowing and sowing speed, improving efficiency, shortening the sowing period, and further ensuring the uniform emergence of seedlings in the later stage.

[0039] The seed retaining cover 7 in the structure of the present invention can be provided with a traction point 7-3 and a spare traction point 7-10 as required, and fixedly connected to the frame of the seed drill to increase the stability of the seeding device and the frame. A spare seed inlet 7-9 is also provided, and the seed inlet 7-6 can be set at different left and right positions according to the installation position relationship between the seeding device and the frame. In addition, a seed retaining cover centering block 11 is provided, which serves to enhance the gravity of the seed retaining cover 7 and increase the stability of the connection with the frame. A seed inlet observation port 7-1 and a spare seed inlet observation port 7-11 are provided to facilitate people to observe the situation in the seed chamber.

[0040] The seed retaining cover 7 is provided with a seed adjustment fan-shaped hole 7-5, and the positioning screw 13 on the core disk 5 passes through the seed adjustment fan-shaped hole 7-5 and the seed amount adjustment connecting pin hole 8-5 on the seed amount regulator 8, and then is fixedly connected. Its function is: when the positioning screw 13 is loosened, the seed amount regulator 8 and the left and right tightening position of the positioning screw 13 on the seed adjustment fan-shaped hole 7-5 are adjusted, the relative position of the core disk 5 and the seed retaining cover 7 is adjusted, the seeding recess 5-3 on the core disk 5 is changed relative to the seeding position of the entire seeding device, and the time and position of the seed taking disk 3 to guide the seed module to sow are changed. When the seed disc 3 rotates clockwise and the taken seed particles are small, the positioning position of the positioning screw 13 on the seed adjustment fan-shaped hole 7-5 is adjusted, so that the seeding recess 5-3 of the core disc 5 moves forward, which prolongs the seed feeding time and allows excess seeds to have time to fall into the seed chamber when taking seeds, thereby playing a role in precise seed taking; when the taken seed particles are large, the positioning position of the positioning screw 13 on the seed adjustment fan-shaped hole 7-5 causes the seeding recess 5-3 of the core disc 5 to move backward, thereby shortening the seed feeding time, and the seed disc 3 can accurately take seeds, thereby playing a technical effect of early seed feeding.

[0041] In addition, a digital marking 7-4 is provided above the seed adjustment fan-shaped hole 7-5, and the adjustment position can be checked through the digital observation hole 8-4 on the seed quantity regulator 8, thereby increasing the positioning accuracy of the positioning screw 13 and facilitating more accurate fixing of the screw at the desired adjustment position.

[0042] A seed pusher 7-12 is also provided on the inner side of the seed blocking cover. The seed pusher structure includes a base 7-14, a truncated cone-shaped body 7-15, and a fastening screw hole 7-13. The pusher 7-12 is made of rubber elastic material and is located next to the seed cleaning port 7-7.

[0043] The function of the seed pusher: the seed drill rotates forward during operation, driving the seed tray to rotate at the same time, and the seeds in the seed chamber are lifted up and slide upward. In order to reduce the seeds from sliding too high upward, control the horizontal height of the seeds, and increase the accuracy of seed removal from the seed tray, a seed pusher is designed to push the seeds to the seed holes. The seed pusher is installed in the seed chamber at the bottom of the seed retaining tray, next to the seed cleaning port.

[0044] A seed stop cover centering block 11 is provided on the active disk shaft 10 passing through the seed stop cover 7. The other end of the active disk shaft 10 extends into the axial hole of the active disk 19 and is connected to the active disk 19 through the movable disk bearing Ⅰ24 and the movable disk bearing Ⅱ25. The outer sides of the movable disk bearing Ⅰ24 and the movable disk bearing Ⅱ25 are tightly sealed by the plug cover 18. The movable disk bearing Ⅰ24 and the movable disk bearing Ⅱ25 are respectively located on both sides of a boss in the axial hole of the active disk 19, and their function is to prevent the positions of the left movable disk bearing Ⅰ24 and the movable disk bearing Ⅱ25 from being displaced, so that the active disk shaft 10 and the active disk 19 are installed more stably. The core disk bearing Ⅰ31 and the core disk bearing Ⅱ32 are installed in the axial hole of the core disk and are sleeved on the active disk shaft 10. A core disk retaining spring is provided on the outer side of the movable disk bearing Ⅱ25 to achieve the purpose of positioning.

[0045] The inner sides of the active disk 19 and the auxiliary disk ring 2 of the present invention are respectively provided with a seeding nozzle annular groove 16 and a seeding nozzle insert positioning groove 14, which facilitates the left and right insertion of the positioning insert plate 1-15 of the seeding nozzle, so that the seeding nozzle located between the active disk 1 and the auxiliary disk ring 2 is more firmly connected.

[0046] Compared with the prior art, the disc-hole type precision seeding device provided by the present invention has the advantages of reasonable structure, economy and practicality. It can not only realize precise seed taking, but also complete accurate seeding and seeding, is flexible and convenient, and has stable performance. The various components of the seeding device are stably assembled, and the accessories are easy to replace and maintain. The seed guide and seeding combination device and the seed taking combination device cooperate with each other to form an organic whole with the active disc, the auxiliary disc ring, and the seed blocking cover. The precision seeding device is worthy of promotion, has higher working efficiency, and can improve the overall seeding operation efficiency and quality of the seeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the main structure in Example 1 of the present invention.

[0048] Figure 2 for Figure 1 Schematic diagram of the AA cross-sectional structure.

[0049] Figure 3 It is a schematic diagram of the main structure of the seed guide and seeding combination device in Example 1 of the present invention.

[0050] Figure 4 for Figure 3 Schematic diagram of the BB cross-section structure.

[0051] Figure 5 Schematic diagram of the main structure of the active disk in an embodiment of the present invention.

[0052] Figure 6 It is a schematic diagram of the cross-sectional connection relationship structure of the active disk in an embodiment of the present invention.

[0053] Figure 7 The figure shows a schematic diagram of the structure of the acupoint pressing plate in the main view. The figure shows a schematic diagram of the combination of acupoint insertion holes in the eighth embodiment of the present invention, wherein the number of the acupoint insertion holes is 12, 13, 14, 15, 16, and 18.

[0054] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure in the CC direction.

[0055] Fig. 9 for Figure 7 Schematic diagram of the rear view structure of the middle acupoint pressure plate.

[0056] Fig.10 This is a schematic diagram of the main structure of the seed guide module and the seed nozzle combined together in Example 1 of the present invention.

[0057] Fig.11 for Fig.10 Schematic diagram of the top view structure.

[0058] Fig.12 for Fig.10 Schematic diagram of the structure viewed from above.

[0059] Fig.13 This is a schematic diagram of the connection relationship structure of the seed guide module, the seed nozzle and the active disk in Example 1 of the present invention.

[0060] Fig.14 for Fig.10 Schematic diagram of the cross-section structure.

[0061] Fig.15 It is a schematic diagram of the structure of the top view of the movable nozzle and the fixed nozzle of the seeding nozzle of the present invention in the open state.

[0062] Fig.16 for Fig.14 Schematic diagram of the structure of the film-breaking blade of the middle fixed nozzle.

[0063] Fig.17 for Fig.14 Schematic diagram of the half-section structure of the middle moving mouth.

[0064] Fig.18 for Fig.17 Schematic diagram of the structure of the middle moving mouth viewed from direction E.

[0065] Fig.19 This is a schematic diagram of the main structure of the combined device in Example 1 of the present invention.

[0066] Fig. 20 for Fig.19 Schematic diagram of the cross-sectional structure in the DD direction.

[0067] Fig.21 for Fig.19 Schematic diagram of the main structure after the core disk and the seed blocking disk are combined.

[0068] Fig. 22 for Fig.21 Schematic diagram of the cross-sectional structure in the EE direction.

[0069] Fig.23 for Fig.21 Schematic diagram of the rear view structure after the core disk and the seed blocking disk are combined.

[0070] Fig.24 for Fig.19 Schematic diagram of the main structure of the core disk.

[0071] Fig.25 for Fig.24 Schematic diagram of the cross-sectional structure in the FF direction.

[0072] Fig.26 for Fig.24 Schematic diagram of the rear view structure of the core disk.

[0073] Fig. 27 for Fig.19 Schematic diagram of the main structure of the middle-block seed tray.

[0074] Fig.28 This is a schematic diagram of the main structure of the seed tray in Example 1 of the present invention.

[0075] Fig.29 for Fig.28 Schematic diagram of the cross-sectional structure of GG.

[0076] Fig.30 middle Fig.28 Schematic diagram of the structure of the partially enlarged part.

[0077] Fig.31 for Fig.30 Schematic diagram of the left view structure.

[0078] Fig.32 for Fig.28 Schematic diagram of the rear view structure.

[0079] Fig.33 for Fig.32 Schematic diagram of the structure of the partially enlarged part.

[0080] Fig.34 It is a schematic structural diagram of the seed cleaning brush of the present invention.

[0081] Fig.35 It is a structural schematic diagram of the seed diverter of the present invention.

[0082] Fig.36 The figure is a schematic diagram of the structure of the seed combination device of the present invention when in use.

[0083] Fig.37It is a structural schematic diagram of the installation position relationship of each main sub-component of the present invention.

[0084] Fig.38 It is a schematic diagram of the cross-sectional structure of the core disc retaining spring.

[0085] Fig.39 It is a schematic diagram of the main structure of the core disc retaining spring.

[0086] Fig.40 It is a schematic diagram of the front structure of the seed retaining cover of the present invention.

[0087] Fig.41 It is a schematic diagram of the cross-sectional structure of the seed retaining cover in the HH direction.

[0088] Fig.42 The diagram is a schematic diagram of the main structure of the seed pusher provided on the inner side of the seed retaining cover of the present invention.

[0089] Fig.43 for Fig.42 Schematic diagram of the top view of the central seed pusher.

[0090] Fig.44 The present invention is a schematic structural diagram of the connection relationship between the seed retaining cover, the seed quantity regulator and the seed inlet elbow.

[0091] Fig.45 It is a schematic diagram of the cross-sectional structure of the seed quantity regulator.

[0092] Fig.46 This is a schematic diagram of the main structure of the seed quantity regulator.

[0093] Fig.47 It is a schematic diagram of the main structure of the auxiliary dynamic disc.

[0094] Fig.48 It is a schematic diagram of the cross-sectional structure of the auxiliary dynamic disc.

[0095] Fig.49 It is a schematic diagram of the rear view structure of the auxiliary dynamic disc.

[0096] As shown in the figure, 1 is a seeding nozzle, 1-1 is a horizontal plate bending block, 1-2 is a horizontal plate I, 1-3 is a horizontal plate II, 1-3-1 is a threaded hole, 1-4 is a vertical plate bending block, 1-5 is a vertical plate, 1-6 is a fixed nozzle, 1-7 is a fixed nozzle film-breaking blade, 1-8 is a movable nozzle film-breaking blade, 1-9 is a movable nozzle, 1-10 is a small hinge plate, 1-11 is a dovetail plate, 1-12 is a compression spring, 1-13 is a large hinge plate, 1-14 is a spring fixing plate, 1-15 is a positioning plug plate, 1-16 is a seed guide surface, 1-17 is a seeding nozzle seed inlet, 1-18 is a knife-shaped edge, 1-19 is a cockscomb-shaped knife body, 1-20 is a pointed end, 1-21 is a side knife, 1-22 is an upper knife, 1-23 is a groove-shaped end, and 1-24 is an arc-shaped front edge.

[0097] As shown in the figure, 2 is the auxiliary driving disc, 3 is the seed taking disc, 3-1 is the installation hole of the seed guide module, 3-2 is the seed taking port, 3-3 is the seed blocking wall, 3-4 is the seed scraping angle, 3-5 is the seed cleaning slope, 3-6 is the annular inner circumference, 3-7 is the wedge-shaped angle A, 3-8 is the seed taking hole, 3-9 is the outer wall, 3-10 is the angle B, 3-11 is the rear wall of the seed taking hole, 3-12 is the seed discharge port, and 3-13 is the seed taking nest; 4 is the acupoint pressure plate, 4-1 is the flange, 4-2 is the acupoint plug hole, 4-3 is the acupoint mark, and 4-4 is the 360-degree scale line.

[0098] As shown in the figure, 5 is a core plate, 5-1 is a bearing mounting hole, 5-2 is a reinforcing rib, 5-3 is a seeding recess, 5-4 is a seed retaining plate, 5-5 is a core plate body, and 5-6 is a positioning convex edge.

[0099] As shown in the figure, 6 is the seed chamber, 7 is the seed retaining cover, 7-1 is the seed input observation port, 7-2 is the seed quantity regulator fixing hole, 7-3 is the traction point, 7-4 is the seed adjustment digital mark, 7-5 is the seed adjustment fan-shaped hole, 7-6 is the seed input port, 7-7 is the seed cleaning port, 7-8 is the central axis hole, 7-9 is the seed input spare port, 7-10 is the spare traction point, 7-11 is the spare seed input observation port, 7-12 is the seed pusher, 7-13 is the fastening screw hole, 7-14 is the base, and 7-15 is the truncated cone body.

[0100] As shown in the figure, 8 is a seed quantity regulator, 8-1 is a regulator fixing screw, 8-2 is a regulator fan-shaped hole, 8-3 is a regulator rotation centering hole, 8-4 is a digital observation hole, 8-5 is a seed quantity adjustment connecting pin hole, 8-6 is a regulator convex plate, 8-7 is a seed quantity addition and subtraction mark, 8-8 is an adjustment direction arrow; 9 is a core disk retaining spring, 10 is an active disk shaft, 11 is a seed stop cover centering block, 12 is a seed inlet elbow, 13 is a positioning screw, 14 is a seeding nozzle insert positioning groove, 15 is a main and auxiliary active disk connecting rod, 16 is a seeding nozzle annular slot, 17 is acupoint pressure plate fixed installation hole, 18 is a plug cover , 19 is the active disk, 20 is the annular groove of the seed guide module, 21 is the seed guide module, 22 is the pressure plate fixing hole, 23 is the main and auxiliary movable disk connecting rod hole Ⅰ, 24 is the movable disk bearing Ⅰ, 25 is the movable disk bearing Ⅱ, 26 is the angle A, 27 is the angle B, 28 is the seed cleaning brush, 28-1 is the bristle, 28-2 is the bristle base, 29 is the seed remover, 29-1 is the seed remover head, 29-2 is the spring body, 30 is the seed, 31 is the core disk bearing Ⅰ, 32 is the core disk bearing Ⅱ, 33 is the core disk retaining spring, 34 is the seed cleaning brush mounting hole, 35 is the seed remover mounting hole, 36 is the main and auxiliary movable disk connecting rod hole Ⅱ. DETAILED DESCRIPTION

[0101] Embodiment 1: Referring to the attached drawings, a disc hole type precision seeding device mainly includes a seeding nozzle 1, an active disc 19, an auxiliary disc ring 2, a seed blocking cover 7, and a seed guiding and seeding combination device and a seed taking combination device used in conjunction with the seeding nozzle 1.

[0102] The seed guiding and seed spotting combined device mainly comprises a seed guiding module 21 and an acupoint pressing plate 4 used in conjunction with the seed spotting nozzle 1 .

[0103] The acupoint pressing plate 4 mainly comprises an annular body, the periphery of which is provided with a flange 4-1, and along the circumferential direction of the flange, a plurality of acupoint insertion holes 4-2 are provided, each acupoint insertion hole 4-2 is a square recess; on the upper surface of the flange 4-1, an acupoint mark 4-3 is provided at a position corresponding to each acupoint insertion hole 4-2.

[0104] The seed guide module 21 mainly includes a module body, which includes a horizontal plate Ⅰ1-2, a horizontal plate Ⅱ1-3, and a vertical plate 1-5. The horizontal plate Ⅰ1-2 and the horizontal plate Ⅱ1-3 are both vertically arranged on the vertical plate 1-5. The horizontal plate Ⅱ1-3 is provided with a threaded hole 1-3-1. The length of the horizontal plate Ⅱ1-3 is shorter than that of the vertical plate 1-5. At one end of the horizontal plate Ⅰ1-2, a horizontal plate bending block 1-1 bent downward is provided; on the vertical plate 1-5 and close to one end of the horizontal plate bending block, a vertical plate bending block 1-4 bent inward is provided, and the shape and size of the vertical plate bending block 1-4 are adapted to the shape and size of the acupoint plug hole 4-2 on the acupoint pressing plate 4; the outer side surface of the vertical plate 1-5 is a seed guide surface 1-16.

[0105] The plurality of seed guide modules 21 are distributed along the circumferential direction of the acupoint pressure plate 4, and the vertical plate bending block 1-4 of each of the seed guide modules 21 is embedded in the acupoint socket 4-2 on the acupoint pressure plate 4; the other end of each of the seed guide modules 21 is fixedly connected to a seeding nozzle 1, and the seed guide surface 1-16 of the seed guide module is obliquely arranged on one side of the seed inlet 1-17 of the seeding nozzle.

[0106] The seed taking assembly device is installed on the inner side of the seed blocking cover 7 of the seeding device 1, and mainly comprises a core plate 5, a seed taking plate 3, and a seed blocking plate 5-4; The core disk 5 is a bowl-shaped disk body, comprising a core disk body 5-5, on which a bearing mounting hole 5-1, a positioning screw 13, and a positioning convex edge 5-6 arranged on the inner side; the seed-blocking disk 5-4 is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-dropping recess 5-3; the seed-blocking disk 5-4 is buckled on the outer periphery of the positioning convex edge 5-6 of the core disk 5 and is detachably connected.

[0107] The seed taking plate 3 is a circular plate body, and a seed guide module mounting hole 3-1 is provided on the seed taking plate body. A plurality of seed taking openings 3-2 in the shape of notches are evenly distributed around the inner circle of the seed taking plate 3, and the openings of the seed taking openings 3-2 are arranged in a clockwise or counterclockwise direction.

[0108] The lower part of the seed taking port 3-2 is a seed taking hole 3-8, and the seed taking hole 3-8 is composed of a built-in seed taking nest 3-13 and a trumpet-shaped seed discharging port 3-12. The central axes of the seed taking nest 3-13 and the seed discharging port 3-12 are set in an inclined direction, and the opening faces the inner wall of the seed taking plate; the seed taking nest 3-13 is arranged at the bottom of the seed taking hole 3-8, and the shape is a concave nest with a geometric shape approximating half a truncated cone, the concave nest has a small bottom and a large upper mouth, and the upper part of the seed taking nest 3-13 extends and expands upward to form an incomplete trumpet-shaped seed discharging port 3-12.

[0109] The lower bottom of the seed taking nest 3-13, which is located at the outer side of the seed taking hole 3-8, is provided with a seed blocking wall 3-3 protruding outwards, which is in the shape of an arc-shaped protrusion that is approximately semicircular.

[0110] The front end of the seed taking port 3-2 transitions forward to be provided with a seed cleaning slope 3-5, and the seed cleaning slope 3-5 is an inclined extension surface. A seed scraping angle 3-4 is provided on one side of the rear end of the seed taking port 3-2. The seed scraping angle 3-4 is wedge-shaped, one surface of which is a part of the annular inner circumference, and the other surface is the upper end of the rear side wall 3-11 of the seed taking hole. The above two surfaces extend and transition to form an intersection, and after the intersection, an angle is formed, which is a wedge-shaped angle A3-7, and the wedge-shaped angle A3-7 is an acute angle.

[0111] The seed taking plate 3 is buckled on top of the seed blocking plate 5-4, and the seed taking plate 3 can rotate along the circumferential direction of the seed blocking plate 5-4. During the rotation of the seed taking plate 3, the seeds in the seed taking hole 3-13 of the seed taking plate 3 rotate together with the seed taking plate 3. When passing through the seed dropping recess 5-3 of the seed blocking plate 5-4, the seeds fall from the seed taking hole 3-13 along the seed discharge port 3-12 into the seed dropping recess 5-3.

[0112] The active disk 19 is a basin-shaped disk body and an active disk shaft 10. The basin-shaped disk body is provided with a main and auxiliary active disk connecting rod hole Ⅰ23 and an acupoint pressure disk fixing installation hole 17. The outer center of the basin-shaped disk body is provided with a concave shaft hole, and the inner center is provided with a protruding shaft sleeve. The shaft hole is communicated with the shaft sleeve. The inner side surface of the basin-shaped disk body is provided with a seed nozzle annular groove 16 and a seed guide module annular groove 20; the shape and size of the transverse plate bending block 1-1 of each of the seed guide modules 21 are adapted to the shape and size of the annular groove 20 of the seed guide module; the transverse plate bending block 1-1 of each of the seed guide modules is embedded in the annular groove 20 of the seed guide module along the circumferential direction.

[0113] The auxiliary moving disc ring 2 is an annular disc body, provided with a main and auxiliary moving disc connecting rod hole II 36, and a seeding nozzle insert positioning groove 14 on the inner side.

[0114] The seed retaining cover 7 comprises a cover body, on which a central axis hole 7-8, a seed inlet 7-6, a seed inlet observation port 7-1, a seed quantity regulator fixing hole 7-2, a seed adjustment fan-shaped hole 7-5, a seed adjustment digital mark 7-4, and a seed cleaning port 7-7 are mainly provided; a seed retaining cover centering block 11 is provided at the central axis hole 7-8, a seed quantity regulator 8 is provided at the seed quantity regulator fixing hole, and a seed inlet elbow 12 is connected to the seed inlet; the seed quantity regulator 8 structure comprises a sheet body, on which a regulator fan-shaped hole 8-2, a regulator rotation centering hole are provided 8-3, digital observation hole 8-4, seed quantity adjustment connecting pin hole 8-5, regulator convex plate 8-6; the regulator fan-shaped hole 8-2 on the seed quantity regulator 8 is connected to the seed quantity regulator fixing hole 7-2 on the seed blocking cover 7 through the regulator fixing screw 8-1; the seed quantity regulator connecting pin hole 8-5 on the seed quantity regulator 8 is connected to the seed adjustment fan-shaped hole 7-5 on the seed blocking cover 7 through the positioning screw 13 on the core disk 5; the regulator rotation centering hole 8-3 on the seed quantity regulator 8 is sleeved on the central axis hole 7-8 on the seed blocking cover 7.

[0115] The seed taking assembly device is arranged on the inner side of the seed blocking cover 7, and the space between the core disk 5 and the seed blocking cover 7 is the seed chamber 6. The positioning screw 13 of the core disk 5 passes through the seed adjustment fan-shaped hole 7-5 on the seed blocking cover 7 and the seed amount adjustment connecting pin hole 8-5 on the seed amount regulator 8, and is fixed by a nut. The bearing mounting hole of the core disk 5 is provided with a core disk bearing I 31 and a core disk bearing II 32. The shaft sleeve of the active disk 19 is connected to the core disk 5 through the core disk bearing I 31 and the core disk bearing II 32. The outer side of the core disk bearing II 32 is provided with a core disk retaining spring 33.

[0116] The seed guiding and seeding combination device is located between the active disk 19 and the seed taking combination device, wherein the seed taking disk 3 and the seed guiding module 21 are fixedly connected by a screw passing through the threaded hole 1-3-1 and the seed guiding module mounting hole 3-1; the acupuncture point pressure plate 4 and the active disk 19 are fixedly connected by a screw passing through the pressure plate fixing hole 22 and the acupuncture point pressure plate fixing mounting hole 17; the auxiliary movable disk ring 2 is arranged on the outer periphery of the seed blocking cover 7, and the active disk 19 and the auxiliary movable disk ring are fixedly connected by the main and auxiliary movable disk connecting rod 15 passing through the main and auxiliary disk connecting rod hole Ⅰ23 and the main and auxiliary movable disk connecting rod hole Ⅱ36.

[0117] The upper surface of the annular body of the acupoint pressing plate 4 is provided with 360-degree scale lines 4-4 along the circumferential direction, and acupoint holes 4-2 are evenly distributed on the flange 4-1, and the number of acupoint holes 4-2 is 14. Correspondingly, on the upper surface of the flange 4-1, at the position corresponding to each acupoint hole 4-2, an acupoint mark 4-3 is provided with Arabic numerals, and the Arabic numeral of each acupoint mark 4-3 is 14.

[0118] The seeding nozzle is a cockscomb knife membrane-breaking seeding nozzle, which mainly includes: a movable nozzle 1-9, a fixed nozzle 1-6, and an opening and closing device; wherein the front end of the movable nozzle 1-9 is a groove-shaped end 1-23, and the front end of the fixed nozzle 1-6 is also a groove-shaped end 1-23, the movable nozzle 1-9 and the fixed nozzle 1-6 are hinged, and the groove-shaped end 1-23 of the movable nozzle 1-9 is wrapped in the groove-shaped end 1-23 of the fixed nozzle 1-6, and the movable nozzle 1-9 and the fixed nozzle 1-6 are buckled to form a seed delivery chamber; the opening and closing device is installed between the movable nozzle 1-9 and the fixed nozzle 1-6 to deliver the seed. The movable nozzle and the fixed nozzle are opened or buckled; the lower part of the fixed nozzle 1-6 is connected with a positioning plug plate 1-15 with a seed inlet, and the seed guide surface 1-16 of the seed guide module 21 is tilted on one side of the seed inlet of the seeding nozzle 1, so that the seeds sliding through the seed guide surface 1-16 enter the seed inlet 1-17 of the seeding nozzle; the shape and size of the positioning plug plate 1-15 are adapted to the shape and size of the annular groove 16 of the seeding nozzle on the active disk 19; the positioning plug plate 1-15 of each seeding nozzle is embedded in the annular groove 16 of the seeding nozzle along the circumferential direction.

[0119] In the structure of the seeding nozzle 1, the specific structures of the fixed nozzle 1-6 and the movable nozzle 1-9 are as follows: the cross-sectional shapes of the groove-shaped ends 1-23 of the fixed nozzle and the movable nozzle are both arc-shaped, which are a thin plate bent into an arc to form a groove shape, and its front edge 1-24 is an arc-shaped arc, and the groove-shaped end 1-23 is provided with a knife-shaped cutting edge 1-18, and the knife-shaped cutting edge 1-18 is a double-edged edge or a single-edged edge; the groove-shaped ends 1-23 of the fixed nozzle and the movable nozzle are interlocked with each other in a bite-shaped state.

[0120] The back sides of the grooved ends 1-23 of the fixed nozzle 1-6 and the movable nozzle 1-9 are provided with film-breaking blades. The fixed nozzle film-breaking blade 1-7 is a cockscomb-shaped blade body 1-19 when viewed from the side. The pointed end 1-20 of the cockscomb-shaped blade body 1-19 is arranged outward, and the two side edges of the cockscomb-shaped blade body 1-19 have cutting edges to form a side knife 1-21 and an upper knife 1-22. The upper knife 1-22 is higher than the top of the grooved end 1-23 of the fixed nozzle and extends toward the opening direction of the movable nozzle 1-9.

[0121] The fixed nozzle 1-6 and the movable nozzle 1-9 are hinged by hinges, and the hinges include a small hinge plate 1-10, a large hinge plate 1-13, and a hinge axis. The fixed nozzle 1-6 is fixedly connected to the large hinge plate 1-13, and the movable nozzle 1-9 is fixedly connected to the small hinge plate 1-10.

[0122] The opening and closing device is a compression spring 1-12, and a spring fixing plate 1-14 is provided on the fixed nozzle 1-6. One end of the compression spring 1-12 is fixed on the spring fixing plate 1-14 of the fixed nozzle, and the other end is fixed on the small hinge plate 1-10.

[0123] The disc-hole type precision seeding device provided in the embodiment of the present invention has the advantages of reasonable structure, economy and practicality, can realize precise seed taking, and can complete accurate seeding and seeding, is flexible and convenient, has stable performance, and the various components of the seeding device are stably assembled and the accessories are easy to replace and repair. The seed guide and seeding combination device and the seed taking combination device cooperate with each other to form an organic whole with the active disc, the auxiliary disc ring, and the seed blocking cover. The precision seeding device is worthy of promotion, has higher work efficiency, and can improve the overall seeding operation efficiency and quality of the seeding device.

[0124] Embodiment 2: Compared with Embodiment 1, the difference of this embodiment is: A seed pusher 7-12 is also provided on the inner side of the seed blocking cover. The seed pusher structure includes a base 7-14, a truncated cone-shaped body 7-15, and a fastening screw hole 7-13. The pusher 7-12 is made of rubber elastic material and is located next to the seed cleaning port 7-7.

[0125] Embodiment 3: Compared with Embodiment 2, the difference of this embodiment is: In the seed guide and seed spotting combined device, the seed guide surface 1-16 of the seed guide module 21 is obliquely arranged on the side of the seed spotting nozzle inlet 1-17, and its arrangement position is close to the back of the fixed nozzle 1-6, and is located on the same side as the fixed nozzle film breaking blade 1-7, so that the seed guide surface 1-16 and the cut surface of the back of the fixed nozzle form an angle A26, and the angle A26 is an obtuse angle of 100 degrees; the transverse plate bending block 1-1 of the seed guide module 21 is embedded in the annular groove 20 of the seed guide module along the circumferential direction, so that the seed guide surface 1-16 and the tangent direction of the embedding point of the transverse plate bending block 1-1 in the annular groove 20 of the seed guide module form an angle B27, and the angle B27 is an obtuse angle of 100 degrees.

[0126] Embodiment 4: Compared with Example 3, the difference of this embodiment is: In the seed guide and seed spotting combined device, the seed guide surface 1-16 of the seed guide module 21 is obliquely arranged on the side of the seed spotting nozzle inlet 1-17, and its arrangement position is close to the back of the fixed nozzle 1-6, and is located on the same side as the fixed nozzle film breaking blade 1-7, so that the seed guide surface 1-16 and the cut surface of the back of the fixed nozzle form an angle A26, and the angle A26 is an obtuse angle of 120 degrees; the transverse plate bending block 1-1 of the seed guide module is embedded in the annular groove 20 of the seed guide module along the circumferential direction, so that the seed guide surface 1-16 and the tangent direction of the embedding point of the transverse plate bending block 1-1 embedded in the annular groove 20 of the seed guide module form an angle B27, and the angle B27 is an obtuse angle of 120 degrees.

[0127] Embodiment 5: Compared with Example 4, the difference of this embodiment is: In the seed collection combination device, its structure also includes a seed cleaning brush 28 and a seed remover 29. The seed cleaning brush 28 and the seed remover 29 are both arranged on the inner side of the seed blocking cover 7 and fixedly connected to the seed blocking cover 7. The positions of the seed cleaning brush 28 and the seed remover 29 are both arranged close to the seed collection plate 3.

[0128] The structure of the seed cleaning brush 28 includes bristles 28-1 and a bristle base 28-2, and the structure of the seed remover 29 includes a seed removing head 29-1 and a spring body 29-2. The seed cleaning brush 28 is fixed on the seed blocking cover 7, and the bristles are facing the seed taking disk 3. In the rotation direction of the seed taking disk 3, the installation position of the seed cleaning brush 28 is close to the seed cleaning slope 3-5 of the seed taking disk; the seed remover 29, the seed removing head 29-1 is facing the seed taking disk 3, and the installation position of the seed remover 29 on the seed blocking cover 7 is closer to the seed inlet 7-6 on the seed blocking cover 7 than the installation position of the seed cleaning brush 28.

[0129] Embodiment 6: Compared with Example 5, the difference of this embodiment is: In the seed taking combination device, the seed cleaning slope of the seed taking plate is an arc-shaped beveled slope extending obliquely from the outer wall toward the annular inner circumference; the angle B3-10 formed by the opening shape of the evenly distributed seed taking openings is an acute angle, and reinforcing ribs are provided on the inner side of the core plate body.

[0130] Embodiment 7: Compared with Example 1, the difference of this embodiment is that: in the seed guide and seeding combination device, the upper surface of the annular body is provided with a 360-degree scale line 4-4 along the circumferential direction, and acupoint holes 4-2 are evenly distributed on the flange 4-1, and the number of acupoint holes 4-2 is 12, that is, in the circumferential direction, there are 12 acupoint holes 4-2 evenly distributed around the annular body; correspondingly, on the upper surface of the flange 4-1, at the position corresponding to each acupoint hole 4-2, an acupoint mark 4-3 is provided with an Arabic numeral, and the Arabic numeral of each acupoint mark 4-3 is 12.

[0131] Embodiment 8: Compared with Example 4, the difference of this embodiment is that: the upper surface of the annular body of the acupoint pressing plate 4 is provided with 360-degree scale lines 4-4 along the circumferential direction, and acupoint holes 4-2 are evenly distributed on the flange 4-1, and the number of acupoint holes 4-2 is 15, that is, in the circumferential direction, there are 15 acupoint holes 4-2 evenly distributed around the annular body; correspondingly, on the upper surface of the flange 4-1, at the position corresponding to each acupoint hole 4-2, an Arabic numeral is provided for acupoint marking 4-3, and the Arabic numeral of each acupoint marking 4-3 is 15.

[0132] Embodiment 9: Compared with Example 1, the difference of this embodiment is that: the upper surface of the annular body of the acupoint pressing plate 4 is provided with 360-degree scale lines 4-4 along the circumferential direction, and acupoint holes 4-2 are evenly distributed on the flange, and the number of acupoint holes 4-2 is 30, that is, in the circumferential direction, 30 acupoint holes 4-2 are evenly distributed around the annular body; correspondingly, on the upper surface of the flange 4-1, at the position corresponding to each acupoint hole 4-2, an Arabic numeral is provided for acupoint marking 4-3, and the Arabic numeral of each acupoint marking 4-3 is 30.

[0133] Embodiment 10: Compared with Example 8, the difference of this embodiment lies in that: in the seed guide and seeding combination device, the upper surface of the annular body is provided with a 360-degree scale line 4-4 along the circumferential direction, and two groups of evenly distributed acupoint holes 4-2 are provided on the flange 4-1, and the two groups refer to: the number of the evenly distributed acupoint holes 4-2 in one group is 12, that is, in the circumferential direction, there are 12 acupoint holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupoint hole 4-2 is provided with an acupoint mark 4-3 with the Arabic numeral 12; the number of the other group of evenly distributed acupoint holes 4-2 is 16, that is, in the circumferential direction, there are 16 acupoint holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupoint hole 4-2 is provided with an acupoint mark 4-3 with the Arabic numeral 16.

[0134] Embodiment 11: Compared with Example 10, the difference of this embodiment lies in that: in the seed guide and seeding combination device, the upper surface of the annular body is provided with a 360-degree scale line 4-4 along the circumferential direction, and three groups of evenly distributed acupoint holes 4-2 are provided on the flange 4-1, and the three groups refer to: the number of the evenly distributed acupoint holes 4-2 in one group is 14, that is, in the circumferential direction, there are 14 acupoint holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupoint hole 4-2 is provided with an acupoint mark 4-3 with the Arabic numeral 14; the number of the other group of evenly distributed acupoint holes 4-2 is 16, that is, in the circumferential direction, there are 16 acupoint holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupoint hole 4-2 is provided with an acupoint mark 4-3 with the Arabic numeral 16. There is also a group of 20 acupuncture point holes 4-2 evenly distributed, that is, along the circumferential direction, there are 20 acupuncture point holes 4-2 evenly distributed around the annular body, and an acupuncture point mark 4-3 with the Arabic numeral 20 is provided at the position corresponding to each acupuncture point hole 4-2.

[0135] Embodiment 12: Compared with Example 10, the difference of this embodiment lies in that: in the seed guide and seeding combination device, the upper surface of the annular body is provided with a 360-degree scale line 4-4 along the circumferential direction, and six groups of evenly distributed acupuncture point holes 4-2 are provided on the flange, and the six groups refer to: the number of the evenly distributed acupuncture point holes 4-2 in one group is 12, that is, in the circumferential direction, there are 12 acupuncture point holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupuncture point hole 4-2 is provided with an acupuncture point mark 4-3 with the Arabic numeral 12; the number of the evenly distributed acupuncture point holes 4-2 in one group is 13, that is, in the circumferential direction, there are 13 acupuncture point holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupuncture point hole 4-2 is provided with an acupuncture point mark 4-3 with the Arabic numeral 13 ; The number of acupoint sockets 4-2 in one group is 14, that is, in the circumferential direction, there are 14 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with the Arabic numeral 14 is provided at a position corresponding to each acupoint socket 4-2; the number of acupoint sockets 4-2 in one group is 15, that is, in the circumferential direction, there are 15 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with the Arabic numeral 15 is provided at a position corresponding to each acupoint socket 4-2; the number of another group of evenly distributed acupoint sockets 4-2 is 16, that is, in the circumferential direction, there are 16 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with the Arabic numeral 16 is provided at a position corresponding to each acupoint socket 4-2. There is also a group of 18 acupuncture point holes 4-2 evenly distributed, that is, in the circumferential direction, 18 acupuncture point holes 4-2 are evenly distributed around the annular body, and an acupuncture point mark 4-3 with the Arabic numeral 18 is provided at the position corresponding to each acupuncture point hole 4-2.

[0136] Embodiment 13: Compared with Example 10, the difference of this embodiment lies in that: in the seed guide and seeding combination device, the upper surface of the annular body is provided with a 360-degree scale line 4-4 along the circumferential direction, and five groups of evenly distributed acupuncture point holes 4-2 are provided on the flange 4-1, and the six groups refer to: the number of the evenly distributed acupuncture point holes 4-2 in one group is 20, that is, in the circumferential direction, there are 20 acupuncture point holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupuncture point hole 4-2 is provided with an acupuncture point mark 4-3 with the Arabic numeral 20; the number of the evenly distributed acupuncture point holes 4-2 in one group is 24, that is, in the circumferential direction, there are 24 acupuncture point holes 4-2 evenly distributed around the annular body, and the position corresponding to each acupuncture point hole 4-2 is provided with an acupuncture point mark 4-3 with the Arabic numeral 2 4; the number of acupoint sockets 4-2 evenly distributed in one group is 26, that is, in the circumferential direction, there are 26 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with Arabic numerals 26 is provided at a position corresponding to each acupoint socket 4-2; the number of acupoint sockets 4-2 evenly distributed in one group is 28, that is, in the circumferential direction, there are 28 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with Arabic numerals 28 is provided at a position corresponding to each acupoint socket 4-2; and the number of acupoint sockets 4-2 evenly distributed in another group is 30, that is, in the circumferential direction, there are 30 acupoint sockets 4-2 evenly distributed around the annular body, and an acupoint mark 4-3 with Arabic numerals 30 is provided at a position corresponding to each acupoint socket 4-2.

Claims

1. A disc-type precision seeding device, mainly comprising a seeding nozzle, characterized in that It also includes an active disk, an auxiliary disk ring, a seed blocking cover, and a seed guiding and seed spotting combined device and a seed taking combined device used in conjunction with the seed spotting nozzle; The seed guiding and seed spotting combined device mainly comprises a seed guiding module and an acupoint pressing plate used in conjunction with the seed spotting nozzle; The acupoint pressing plate mainly comprises an annular body, the outer periphery of the annular body is provided with a flange, and a plurality of acupoint insertion holes are provided along the circumferential direction of the flange; an acupoint mark is provided on the upper surface of the flange at a position corresponding to each acupoint insertion hole; The seed guiding module mainly comprises a module body, which comprises a horizontal plate I, a horizontal plate II and a vertical plate. The horizontal plate I and the horizontal plate II are both vertically arranged on the vertical plate. The horizontal plate II is provided with a threaded hole. The length of the horizontal plate II is shorter than that of the vertical plate. At one end of the horizontal plate I, a horizontal plate bending block bending downward is provided; at one end of the vertical plate close to the horizontal plate bending block, a vertical plate bending block bending inward is provided. The shape and size of the vertical plate bending block are adapted to the shape and size of the acupuncture point plug hole on the acupuncture point pressing plate; the outer side surface of the vertical plate is a seed guiding surface; The plurality of seed guide modules are distributed along the circumferential direction of the acupuncture point pressure plate, and the vertical plate of each seed guide module is bent into a card block and embedded in the acupuncture point insertion hole on the acupuncture point pressure plate; the other end of each seed guide module is fixedly connected to a seeding nozzle, and the seed guide surface of the seed guide module is obliquely arranged on one side of the seed inlet of the seeding nozzle; The seed taking assembly device is installed on the inner side of the seed blocking cover of the seeding device, and mainly comprises a core plate, a seed taking plate, and a seed blocking plate; The core plate is a bowl-shaped plate body, including a core plate body, on which a bearing mounting hole, a positioning screw, and a positioning convex edge arranged on the inner side are provided; the seed-blocking plate is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-casting notch; the seed-blocking plate is buckled on the outer periphery of the positioning convex edge of the core plate and is detachably connected; The seed taking plate is a circular plate body, and a seed guide module installation hole is provided on the seed taking plate body. A plurality of seed taking openings in the shape of notches are evenly distributed on the inner circle of the seed taking plate, and the openings of the seed taking openings are arranged in a clockwise or counterclockwise direction; The lower part of the seed taking port is a seed taking hole, and the seed taking hole is composed of a built-in seed taking nest and a trumpet-shaped seed discharging port. The central axis of the seed taking nest and the seed discharging port is arranged in an inclined direction, and the opening faces the inner wall of the seed taking plate; the seed taking nest is arranged at the bottom of the seed taking hole, and the shape is a concave nest with a geometric shape similar to that of a half truncated cone, the concave nest has a small bottom and a large upper mouth, and the upper part of the seed taking nest extends upward to expand to form an incomplete trumpet-shaped seed discharging port; The lower bottom of the seed taking hole, which is located outside the seed taking hole, is provided with a seed blocking wall protruding outwards, and the shape is an arc-shaped protrusion that is approximately semicircular; The front end of the seed taking port is provided with a seed cleaning slope at the transition forward, the seed cleaning slope is an inclined extension surface, and a seed scraping angle is provided on one side of the rear end of the seed taking port, the seed scraping angle is a wedge-shaped body, one surface of which is a part of the annular inner circumference, and the other surface is the upper end of the rear side wall surface of the seed taking hole, the above two surfaces extend and transition to form an intersection, and an angle is formed after the intersection, which is a wedge-shaped angle A, and the wedge-shaped angle A is an acute angle; The seed taking plate is buckled on top of the seed blocking plate, and the seed taking plate can rotate along the circumferential direction of the seed blocking plate. During the rotation of the seed taking plate, the seeds in the seed taking hole of the seed taking plate rotate together with the seed taking plate. When passing through the seed dropping recess of the seed blocking plate, the seeds fall from the seed taking hole along the seed discharge port into the seed dropping recess.

2. The disc-type precision broadcasting device as claimed in claim 1, characterized in that The active disk is a basin-shaped disk body and an active disk shaft. The basin-shaped disk body is provided with a main and auxiliary active disk connecting rod hole I and an acupoint pressure disk fixing installation hole. The outer center of the basin-shaped disk body is provided with a concave shaft hole, and the inner center is provided with a protruding shaft sleeve. The shaft hole is connected with the shaft sleeve. The inner side surface of the basin-shaped disk body is provided with a ring-shaped groove for the seeding nozzle and a ring-shaped groove for the seed guide module; the shape and size of the horizontal plate bending block of each of the seed guide modules are adapted to the shape and size of the ring-shaped groove of the seed guide module; the horizontal plate bending block of each of the seed guide modules is embedded in the ring-shaped groove of the seed guide module along the circumferential direction; The auxiliary moving disc ring is an annular disc body, provided with a main and auxiliary moving disc connecting rod hole II, and a seeding nozzle insert positioning groove on the inner side; The seed retaining cover comprises a cover body, on which a central axis hole, a seed inlet, a seed inlet observation port, a seed quantity regulator fixing hole, a seed adjustment fan-shaped hole, a seed adjustment digital mark, and a seed cleaning port are mainly provided; a seed retaining cover centering block is provided at the central axis hole, a seed quantity regulator is provided at the seed quantity regulator fixing hole, and the seed inlet is connected to a seed inlet elbow; the seed quantity regulator structure comprises a sheet body, on which a regulator fan-shaped hole, a regulator rotation centering hole, a digital observation hole, a seed quantity adjustment connecting pin hole, and a regulator convex plate are provided; the regulator fan-shaped hole on the seed quantity regulator is connected to the seed quantity regulator fixing hole on the seed retaining cover through a regulator fixing screw; the seed quantity regulator connecting pin hole on the seed quantity regulator is connected to the seed adjustment fan-shaped hole on the seed retaining cover through a positioning screw on the core disk; the regulator rotation centering hole on the seed quantity regulator is sleeved on the central axis hole on the seed retaining cover.

3. The disc-type precision broadcasting device as claimed in claim 2, characterized in that The seed taking assembly device is arranged on the inner side of the seed blocking cover, the space between the core disc and the seed blocking cover is the seed chamber, the positioning screw of the core disc passes through the seed adjustment fan-shaped hole on the seed blocking cover and the seed quantity adjustment connecting pin hole on the seed quantity regulator, and is fixed by a nut, the core disc bearing I and the core disc bearing II are arranged in the bearing mounting hole of the core disc, the shaft sleeve of the active disc is connected to the core disc through the core disc bearing I and the core disc bearing II, and the core disc retaining spring is arranged on the outer side of the core disc bearing II; The seed guiding and seeding combination device is located between the active disk and the seed taking combination device, wherein the seed taking disk and the seed guiding module are fixedly connected by a screw passing through a threaded hole and a mounting hole of the seed guiding module; the acupuncture point pressure plate and the active disk are fixedly connected by a screw passing through a pressure plate fixing hole and acupuncture point pressure plate fixing mounting hole; the auxiliary movable disk ring is arranged on the outer periphery of the seed blocking cover, and the active disk and the auxiliary movable disk ring are fixedly connected by a main and auxiliary movable disk connecting rod passing through the main and auxiliary disk connecting rod hole Ⅰ and the main and auxiliary movable disk connecting rod hole Ⅱ.

4. The disc-type precision broadcasting device as claimed in claim 3, characterized in that A seed pusher is also provided on the inner side of the seed blocking cover. The seed pusher structure includes a base, a truncated cone-shaped body, and a fastening screw hole. The pusher is made of rubber elastic material and is located between the seed inlet and the seed cleaning port.

5. The disc-type precision broadcasting device as claimed in claim 1, 2, 3 or 4, characterized in that In the seed guide and seeding combination device, the shape of the acupoint socket is a square concave hole; the upper surface of the annular body of the acupoint pressure plate is provided with 360-degree scale lines along the circumferential direction, and the acupoint sockets are evenly distributed on the flange, and the number of the acupoint sockets is 12, 13, 14, 15, 16, 18, 20, 24, 26, 28 or 30; correspondingly, on the upper surface of the flange, at the position corresponding to each acupoint socket, there is an Arabic numeral indicating the acupoint, and the Arabic numerals are 12, 13, 14, 15, 16, 18, 20, 24, 26, 28 or 30.

6. The disc-type precision broadcasting device as claimed in claim 1, 2, 3 or 4, characterized in that In the seed guide and seeding combination device, the shape of the acupoint socket is a square concave hole; the upper surface of the annular body of the acupoint pressure plate is provided with 360-degree scale lines along the circumferential direction, and a plurality of groups of evenly distributed acupoint sockets are provided on the flange, and the plurality of groups refers to: the number of evenly distributed acupoint sockets can be any two or more of 12, 13, 14, 15, 16, 18, 20, 24, 26, 28, 30; correspondingly, on the upper surface of the flange, at the position corresponding to each acupoint socket, there is an Arabic numeral indicating the acupoint, which is 12, 13, 14, 15, 16, 18, 20, 24, 26, 28 or 30.

7. The disc-type precision broadcasting device as claimed in claim 1, 2, 3 or 4, characterized in that The seeding nozzle is a cockscomb knife membrane breaking seeding nozzle, which mainly includes: a moving nozzle, a fixed nozzle, and an opening and closing device; The front end of the movable nozzle is a groove-shaped end, and the front end of the fixed nozzle is also a groove-shaped end. The movable nozzle and the fixed nozzle are hinged, and the groove-shaped end of the movable nozzle is wrapped in the groove-shaped end of the fixed nozzle. The movable nozzle and the fixed nozzle are buckled to form a seed delivery chamber; The opening and closing device is installed between the movable nozzle and the fixed nozzle to open or close the movable nozzle and the fixed nozzle; the lower part of the fixed nozzle is connected with a positioning plug plate with a seed inlet, and the seed guide surface of the seed guide module is inclined to one side of the seed inlet of the seeding nozzle, so that the seeds sliding down through the seed guide surface enter the seed inlet of the seeding nozzle; the shape and size of the positioning plug plate are adapted to the shape and size of the annular groove of the seeding nozzle on the active disk; the positioning plug plate of each seeding nozzle is embedded in the annular groove of the seeding nozzle along the circumferential direction.

8. The disc-type precision broadcasting device as claimed in claim 6, characterized in that The seeding nozzle is a cockscomb knife membrane breaking seeding nozzle, which mainly includes: a moving nozzle, a fixed nozzle, and an opening and closing device; The front end of the movable nozzle is a groove-shaped end, and the front end of the fixed nozzle is also a groove-shaped end. The movable nozzle and the fixed nozzle are hinged, and the groove-shaped end of the movable nozzle is wrapped in the groove-shaped end of the fixed nozzle. The movable nozzle and the fixed nozzle are buckled to form a seed delivery chamber; The opening and closing device is installed between the movable nozzle and the fixed nozzle to open or close the movable nozzle and the fixed nozzle; the lower part of the fixed nozzle is connected with a positioning plug plate with a seed inlet, and the seed guide surface of the seed guide module is inclined to one side of the seed inlet of the seeding nozzle, so that the seeds sliding down through the seed guide surface enter the seed inlet of the seeding nozzle; the shape and size of the positioning plug plate are adapted to the shape and size of the annular groove of the seeding nozzle on the active disk; the positioning plug plate of each seeding nozzle is embedded in the annular groove of the seeding nozzle along the circumferential direction.

9. The disc-type precision broadcasting device as claimed in claim 8, characterized in that In the seeding nozzle structure, the specific structure of the fixed nozzle and the movable nozzle is as follows: the cross-sectional shape of the groove-shaped end of the fixed nozzle and the movable nozzle is an arc-shaped, which is a thin plate bent into an arc to form a groove shape, and its front edge is an arc-shaped arc, and the groove-shaped end is provided with a knife-shaped edge, and the knife-shaped edge is a double-edged edge or a single-edged edge; the groove-shaped ends of the fixed nozzle and the movable nozzle are interlocked with each other, forming a bite shape; The back sides of the groove-shaped ends of the fixed nozzle and the movable nozzle are both provided with film-breaking blades. The film-breaking blade on the fixed nozzle is a cockscomb-shaped blade body when viewed from the side. The pointed end of the cockscomb-shaped blade body is arranged outward. The two sides of the cockscomb-shaped blade body have blade edges to form a side blade and an upper blade. The upper blade is higher than the top of the groove-shaped end of the fixed nozzle and extends toward the opening direction of the movable nozzle. The fixed nozzle and the movable nozzle are hinged by a hinge, and the hinge includes a small hinge plate, a large hinge plate, and a hinge shaft. The fixed nozzle is fixedly connected to the large hinge plate, and the movable nozzle is fixedly connected to the small hinge plate. The opening and closing device is a compression spring. A spring fixing plate is provided on the fixed nozzle. One end of the compression spring is fixed on the spring fixing plate of the fixed nozzle, and the other end is fixed on the small hinge plate.

10. The disc-type precision broadcasting device as claimed in claim 9, characterized in that In the seed guide and seed spotting combined device, the seed guide surface of the seed guide module is obliquely arranged on the side of the seed inlet of the seed spotting nozzle, and its arrangement position is close to the back of the fixed nozzle and is located on the same side as the film breaking blade of the fixed nozzle, so that the seed guide surface and the cut surface of the back of the fixed nozzle form an angle A, and the angle A is an obtuse angle greater than 90 degrees; the horizontal plate bending block of the seed guide module is embedded in the annular groove of the seed guide module along the circumferential direction, so that the seed guide surface and the tangent direction of the embedding point of the horizontal plate bending block in the annular groove of the seed guide module form an angle B, and the angle B is an obtuse angle greater than 90 degrees.

11. The disc-type precision broadcasting device according to claim 1, 2, 3 or 4, characterized in that In the seed collection combination device, its structure also includes a seed cleaning brush and a seed remover, which are both arranged on the inner side of the seed blocking cover and fixedly connected to the seed blocking cover, and are both located close to the seed collection plate.

12. The disc-type precision broadcasting device according to claim 10, characterized in that In the seed collection combination device, its structure also includes a seed cleaning brush and a seed remover, which are both arranged on the inner side of the seed blocking cover and fixedly connected to the seed blocking cover, and are both located close to the seed collection plate.

13. The disc-type precision broadcasting device as claimed in claim 12, characterized in that The structure of the seed cleaning brush includes bristles and a bristle base, and the structure of the seed remover includes a seed removing head and a spring body. The seed cleaning brush is fixed on the seed blocking cover, and the bristles are facing the seed taking disk. In the rotation direction of the seed taking disk, the installation position of the seed cleaning brush is close to the seed cleaning inclined surface of the seed taking disk; the seed remover, the seed removing head is facing the seed taking disk, and the installation position of the seed remover on the seed blocking cover is closer to the seed inlet on the seed blocking cover than the installation position of the seed cleaning brush.

14. The disc-type precision broadcasting device as claimed in claim 13, characterized in that In the described seed taking combination device, the seed cleaning slope of the described seed taking plate is an arc-shaped beveled slope extending obliquely from the outer wall toward the annular inner circumference; the angle B formed by the opening shape of the described evenly distributed seed taking openings is an acute angle; the described core plate is fixedly connected to the seed retaining cover by the described positioning screw, and the inner side of the described core plate body is provided with reinforcing ribs.

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