A regenerated rice seedling raising whole tray air suction type precision seed metering device with seed cleaning function

Abstract

The application provides a regenerated rice seedling raising whole-disk air suction type precision seed sowing device with seed cleaning function, which comprises a multi-degree-of-freedom mechanical arm, a seed cleaning device, a multi-needle type seed suction disk, a vibrating seed table and a fan device; the multi-degree-of-freedom mechanical arm is connected with the multi-needle type seed suction disk and is used for moving the multi-needle type seed suction disk between a seed suction position and a seed sowing position; the vibrating seed table is located at the seed suction position, the seed cleaning device is installed on a rack of the vibrating seed table, an electric cylinder is arranged in the rack of the vibrating seed table and is used for vibrating the seed table; and the fan device is in communication with a gas inlet of the multi-needle type seed suction disk. The electric cylinder is used for vibrating in accordance with the seed suction demand, the multi-needle type seed suction disk is driven by the mechanical arm to realize seed suction and seed sowing, and the seed cleaning device is used for seed cleaning, so that the sowing precision can be greatly improved, technical support is provided for ensuring factory precision seedling raising and sowing of regenerated rice, and the problems of uneven seed table vibration and poor seed suction / sowing precision in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of regenerative rice factory seedling raising and seeding, and particularly relates to a regenerative rice seedling raising whole-tray air-suction type precision seed metering device with seed cleaning function. BACKGROUND

[0002] As a special type of rice, regenerative rice only needs to be planted once and can be harvested twice. After the first season of rice is harvested, new shoots can germinate on the stubble, and through reasonable water and fertilizer management, the growth of the second season of rice can be realized, thereby improving the yield of rice.

[0003] The regenerative rice seedling raising and seeding stage is an important guarantee for high yield, and it is particularly important to realize precision seeding that meets the agronomic requirements of regenerative rice planting. The traditional mechanical seed metering method has strict requirements on seed size and is prone to seed damage, and it is difficult to meet the needs of precision seeding of regenerative rice, and the seeding efficiency is low and difficult to meet the needs of large-area application and promotion. The whole-tray air-suction type precision seed metering device realizes precision seeding under the premise of ensuring seeding efficiency through whole-tray air-suction type seed metering, and has the characteristics of no seed damage and strong adaptability.

[0004] The seeding accuracy and seed sticking problem of the whole-tray air-suction type seed metering device are still key problems that need to be solved at present. The prior art discloses a field seedling raising air-suction vibrating disc type precision seed metering machine, wherein the vibrating device adopts a crank connecting rod device to realize vibration. The uneven vibration generated by this structure can cause seed migration during movement, resulting in poor seed suction effect. The seed suction device directly sucks seeds after holes are opened on the seed suction plate, resulting in poor seed suction effect. At the same time, the device does not have a seed cleaning function. If seed sticking occurs during seed metering and is not removed, it will affect the next seeding, resulting in continuous generation of voids and affecting the seeding accuracy. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a regenerative rice seedling raising whole-tray air-suction type precision seed metering device with seed cleaning function. The device realizes vibration that meets the seed suction requirements through an electric cylinder, and realizes seed suction and metering through a multi-needle seed suction disc driven by a mechanical arm. The seed cleaning function of the seed cleaning device can greatly improve the seeding accuracy and provide technical support for ensuring the factory precision seedling raising and seeding of regenerative rice. The present application solves the problems of uneven seed tray vibration and poor seed suction / metering accuracy in the prior art.

[0006] The present application achieves the above technical purposes through the following technical means.

[0007] A regenerative rice seedling raising whole-tray air-suction type precision seed metering device with seed cleaning function, comprising a multi-degree-of-freedom mechanical arm, a seed cleaning device, a multi-needle seed suction disc, a vibrating seed table and a fan device.

[0008] The multi-degree-of-freedom mechanical arm is connected with the multi-needle seed suction disc, and is used for moving the multi-needle seed suction disc between a seed suction position and a seed discharge position; the vibrating seed table is located at the seed suction position, the seed cleaning device is installed on a rack of the vibrating seed table, an electric cylinder is arranged in the rack of the vibrating seed table, and the electric cylinder is used for vibrating the seed table; and the fan device is in communication with a gas inlet of the multi-needle seed suction disc.

[0009] Further, the seed cleaning device comprises a fixed cross bar, a brush base, an obliquely arranged brush, a vertically arranged brush and a cylinder, the cylinder is installed on the rack of the vibrating seed table through the fixed cross bar, a stretching rod of the cylinder is connected with the brush base, the brush base is respectively provided with the obliquely arranged brush and the vertically arranged brush, the obliquely arranged brush is located outside the brush base, and the obliquely arranged brush and the vertically arranged brush are driven by the cylinder to move linearly.

[0010] Further, an angle between the obliquely arranged brush and the vertically arranged brush is an acute angle.

[0011] Further, the multi-needle seed suction disc comprises suction needles, suction needle bases, a suction needle flat plate and a gas chamber, one side of the suction needle flat plate is provided with the gas chamber, the other side of the suction needle flat plate is provided with a plurality of uniformly distributed suction needle bases, each suction needle base is provided with a suction needle, and the suction needle is in communication with the gas chamber; the gas chamber is in communication with the fan device, and is used for providing negative pressure required by the suction disc.

[0012] Further, the vibrating seed table comprises a rack, a seed disc base, a seed disc, an electric cylinder and a base, the seed disc is located in the seed disc base, the seed disc base is installed on the rack, the electric cylinder is installed on the rack, one end of the electric cylinder penetrates through the seed disc base and is connected with the seed disc, and the electric cylinder is used for moving the seed disc up and down in the seed disc base.

[0013] Further, the seed disc is divided into a plurality of areas by a plurality of longitudinal and transverse intersecting blocking bars, and at least one impurity removing fine gap is arranged in each area, and the impurity removing fine gap is used for screening impurities.

[0014] Further, the impurity removing fine gap has a length of 36-40 mm and a width of 1-3 mm.

[0015] Further, the gas chamber is divided into two independent left and right gas chambers, the fan device comprises a first high-pressure fan and a second high-pressure fan, the first high-pressure fan is in communication with a first gas source port of the left gas chamber through a corrugated pipe, and the second high-pressure fan is in communication with a second gas source port of the right gas chamber through a corrugated pipe.

[0016] The application has the following beneficial effects:

[0017] 1. The regenerated rice seedling raising integrated disc air suction type precision seed metering device with seed cleaning function, which realizes vibration meeting the seed suction demand through an electric cylinder, realizes seed suction and discharge through a multi-needle type seed suction disc driven by a mechanical arm, and greatly improves the seedling raising precision and guarantees the factory precision seedling raising and sowing of the regenerated rice.

[0018] 2. The regenerated rice seedling raising integrated disc air suction type precision seed metering device with seed cleaning function, which realizes high-frequency and large-amplitude uniform vibration of a seed disc driven by an electric cylinder, so that the seeds are in a discrete motion state, solves the key problems of poor uniformity of a traditional crank connecting rod vibration mechanism and small electromagnetic vibration amplitude, greatly improves the seed suction rate of the suction needles on the seed suction plate, and improves the sowing precision.

[0019] 3. The regenerated rice seedling raising integrated disc air suction type precision seed metering device with seed cleaning function, which is provided with a fine gap for removing impurities in the seed disc, facilitates the removal of impurities, dust and rice awns in the regenerated rice seeds, reduces the probability of suction needle blockage and seed jamming, and maintains the seeds in a fixed area for up-down vibration through partitioning of the seed disc by a baffle, prevents the seeds from deviating and causing accumulation to cause suction needle empty suction, reduces the sowing hole rate, and improves the sowing effect.

[0020] 4. The regenerated rice seedling raising integrated disc air suction type precision seed metering device with seed cleaning function, which comprises a vertical brush and an inclined brush, and when the multi-needle type seed suction disc moves above the seed cleaning brush, multi-angle impurity removal of the suction needles can be realized, the suction needles are ensured to be unblocked, the seed suction precision of the suction needles is improved, and the sowing effect is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. The drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 The structure schematic diagram of the regenerated rice seedling raising integrated disc air suction type precision seed metering device with seed cleaning function.

[0023] Figure 2 The structure schematic diagram of the multi-degree-of-freedom mechanical arm.

[0024] Figure 3 The structure schematic diagram of the seed cleaning device.

[0025] Figure 4 The structure schematic diagram of the multi-needle type seed suction disc.

[0026] Figure 5 Schematic diagram of the suction needle flat plate and the suction needle assembly structure according to the present application.

[0027] Figure 6 Schematic diagram of the air chamber partition structure according to the present application.

[0028] Figure 7 Schematic diagram of the suction needle and the suction needle base assembly structure according to the present application.

[0029] Figure 8 Schematic diagram of the vibration seed tray overall structure according to the present application.

[0030] Figure 9 Schematic diagram of the electric cylinder assembly structure according to the present application.

[0031] Figure 10 Schematic diagram of the seed tray structure according to the present application.

[0032] Figure 11 Schematic diagram of the fan device installation structure according to the present application.

[0033] In the figure:

[0034] 1 - multi-degree-of-freedom mechanical arm; 101 - base; 102 - first rotational degree of freedom; 103 - first positional degree of freedom; 104 - second rotational degree of freedom; 105 - second positional degree of freedom; 106 - third rotational degree of freedom; 107 - third positional degree of freedom; 108 - connecting seat; 2 - seed cleaning device; 201 - first fixed crossbar; 202 - second fixed crossbar; 203 - brush base; 204 - obliquely placed brush; 205 - vertically placed brush; 206 - air cylinder; 3 - multi-needle suction seed tray; 301 - suction needle; 302 - suction needle base; 303 - suction needle flat plate; 304 - flat plate air chamber fixing hole; 305 - air chamber; 306 - first air source port; 307 - suction seed tray mechanical arm fixing hole; 308 - second air source port; 309 - air chamber partition plate; 4 - vibration seed tray; 401 - frame; 402 - seed tray base; 403 - seed tray; 404 - electric cylinder; 405 - electric cylinder base; 406 - impurity removal fine slit; 407 - fixed plate mounting hole; 408 - blocking bar; 409 - seed tray fixing hole; 410 - electric cylinder fixing plate; 411 - electric cylinder fixing hole; 412 - electric cylinder connecting piece; 5 - fan device; 501 - first high-pressure fan; 502 - second high-pressure fan; 503 - air conveying port; 504 - first electromagnetic valve; 505 - second electromagnetic valve. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters throughout the figures denote the same or like elements or components, which detailed description serves the purpose of explanations and is not to be construed as a limitation thereof.

[0036] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are merely intended for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] As shown in Figure 1 The regenerated rice seed cleaning function seedling raising whole tray air suction type precision seed metering device of the present application, as shown in the drawings, comprises a multi-degree-of-freedom mechanical arm 1, a seed cleaning device 2, a multi-needle seed suction disc 3, a vibrating seed table 4 and a fan device 5; the multi-degree-of-freedom mechanical arm 1 is connected with the multi-needle seed suction disc 3, and is used to move the multi-needle seed suction disc 3 between the seed suction position and the seed metering position, the multi-degree-of-freedom mechanical arm 1 is provided with a plurality of rotating pairs and moving pairs, and can realize multi-path movement; the vibrating seed table 4 is located at the seed suction position, the seed cleaning device 2 is installed on the rack of the vibrating seed table 4, and the rack of the vibrating seed table 4 is provided with an electric cylinder 404 for high-frequency vibration of the seed table; the fan device 5 is communicated with the air inlet of the multi-needle seed suction disc 3 through a corrugated pipe.

[0039] As shown in Figure 2As shown, the multi-degree-of-freedom mechanical arm 1 comprises a base 101, a first rotational degree of freedom 102, a first positional degree of freedom 103, a second rotational degree of freedom 104, a second positional degree of freedom 105, a third rotational degree of freedom 106, a third positional degree of freedom 107, and a connecting seat 108; the mechanical arm is fixed on the base 101, and has the first rotational degree of freedom 102, the first positional degree of freedom 103, the second rotational degree of freedom 104, the second positional degree of freedom 105, the third rotational degree of freedom 106, and the third positional degree of freedom 107, which are sequentially connected to realize multi-degree-of-freedom rotation and movement; the base 101 fixes the mechanical arm on the ground, and the connecting seat 108 is arranged on the third positional degree of freedom 107 at the end of the mechanical arm, and is used to connect the multi-needle suction seed tray 3, so that the multi-needle suction seed tray 3 can move between the seed suction position and the seed discharge position, and path planning can be realized according to actual seeding requirements, so as to improve the seeding efficiency while ensuring the seeding effect. When the seed discharger works, the multi-degree-of-freedom mechanical arm 1 realizes the movement between the seed suction position and the seed discharge position of the seed tray according to the pre-set path, and realizes the seed cleaning function according to the seed cleaning requirement in cooperation with the seed cleaning device 2, which realizes the movement and path planning between different position coordinates through the three rotational degrees of freedom and the three positional degrees of freedom, realizes the optimal path planning under the premise of ensuring that the adsorbed seeds do not fall, and improves the seeding effect.

[0040] As shown in Figure 3 , the seed cleaning device comprises a fixed cross bar, a brush base 203, an inclined brush 204, a vertical brush 205, and a cylinder 206, the cylinder 206 is installed on the rack of the vibrating seed table 4 through the first fixed cross bar 201 and the second fixed cross bar 202 at both ends respectively; the stretching rod of the cylinder 206 is connected with the brush base 203, the brush base 203 is provided with the inclined brush 204 and the vertical brush 205 respectively, the inclined brush 204 is located outside the brush base 203, and the inclined brush 204 and the vertical brush 205 are driven to move linearly by the cylinder 206, the inclined brush 204 is 45° to the vertical direction, and the vertical brush 205 is vertically upward. The angle between the inclined brush 204 and the vertical brush 205 is 45°.

[0041] As shown in Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the multi-needle seed suction disc 3 includes suction needles 301, suction needle bases 302, suction needle flat plates 303, and air chambers 305; the flat plate air chamber fixing holes on one side of the suction needle flat plate 303 are connected with the air chambers 305 through fasteners, and the air chambers 305 have cavities therein; a plurality of suction needle bases 302 are evenly arranged on the other side of the suction needle flat plate 303, each suction needle base 302 is provided with a suction needle 301, and the suction needle 301 is in communication with the air chamber 305 through the suction needle base 302; the air chamber 305 is provided with a seed suction disc mechanical arm fixing hole 307 which is butted against the connecting seat 108; the air chamber 305 is divided into two independent left and right air chambers by an air chamber partition plate 309. The left air chamber is provided with a first air source port 306, and the right air chamber is provided with a second air source port 308; the first air source port 306 and the second air source port 308 are respectively in communication with the fan device 5, and are used to provide the required negative pressure for the suction disc.

[0042] In the embodiment, the suction needle 301 is connected with the suction needle base 302, different sizes and numbers of suction needles 301 are selected according to the seeding requirements of different ratooning rice varieties in agriculture, so as to facilitate the seeding of different ratooning rice varieties. Assuming that a 434 (i.e. 14*31) hole seedling tray is used in the embodiment, 434 suction needle bases 302 are installed on the corresponding positions of the suction needle flat plate 303, and then the matching suction needles 301 are installed according to the actual requirements; the suction needle flat plate 303 is connected with the air chamber 305, when the seed suction disc moves above the seed tray 403, the seeds are adsorbed on the negative pressure suction needle 301. When the shapes and sizes of the seeds are different, the suction effect can be optimized by changing the size of the suction hole of the suction needle 301 and the size of the negative pressure.

[0043] As shown in Figure 11 , the fan device 5 includes a first high-pressure fan 501 and a second high-pressure fan 502; the first high-pressure fan 501 is in communication with the first air source port 306 of the left air chamber through a corrugated pipe, and the second high-pressure fan 502 is in communication with the second air source port 308 of the right air chamber through a corrugated pipe, so that the two independent air chambers can provide more stable and uniform pressure for the seed suction disc. The inlet of the first high-pressure fan 501 is provided with a first electromagnetic valve 504, and the inlet of the second high-pressure fan 502 is provided with a second electromagnetic valve 505, and the electromagnetic valves are used to open and close the negative pressure airflow. When the seed suction disc is in the process of seed suction and seed carrying, the first electromagnetic valve 504 and the second electromagnetic valve 505 are opened to maintain stable negative pressure, so that the seeds are adsorbed by the suction needle 301; when the seed suction disc is discharging seeds, the first electromagnetic valve 504 and the second electromagnetic valve 505 are closed, so that the seeds on the suction needle 301 only receive their own gravity, and thus fall into the seedling tray under the condition of their own gravity, completing the seeding.

[0044] As shown in Figure 8 , Figure 9 , and Figure 10As shown, the vibrating seed table 4 comprises a frame 401, a seed tray base 402, a seed tray 403, an electric cylinder 404 and a base 405; the seed tray 403 is located in the seed tray base 402, the seed tray base 402 is installed on the frame 401 through the fixing plate mounting hole 407, the frame 401 is provided with the electric cylinder base 405, the electric cylinder base 405 is installed with the electric cylinder 404, one end of the electric cylinder 404 penetrates through the seed tray base 402 and is connected with the electric cylinder fixing plate 410, the electric cylinder connecting piece 412 is arranged on the stretching rod of one end of the electric cylinder 404, and the electric cylinder connecting piece 412 is butted with the electric cylinder fixing plate 410 through the electric cylinder fixing hole 411. The electric cylinder fixing plate 410 is connected with the seed tray 403 through the seed tray fixing hole 409, so as to make the seed tray 403 move up and down in the seed tray base 402. The seed tray 403 is divided into several areas through a plurality of longitudinal and transverse intersecting blocking strips 408, and at least one impurity removing fine gap 406 is arranged in each area, for screening impurities. The length of the impurity removing fine gap 406 is 36-40 mm, and the width is 1-3 mm.

[0045] When the vibrating seed table 4 works, the electric cylinder 404 realizes intermittent vibration according to the set working frequency and working amplitude, when the seed suction tray moves to above the seed tray, the electric cylinder 404 drives the seed tray 403 to vibrate upward, so that the seeds are dispersed, and then are adsorbed by the suction pins on the seed suction tray. In the embodiment, the seed tray 404 is internally provided with the impurity removing fine gap 406 and is installed with the blocking strip 408, the length of the impurity removing fine gap 406 is 36 mm, the width is 1 mm, and the impurity removing fine gap 406 is uniformly distributed at the bottom of the seed tray 404, so as to facilitate the screening of the impurities, dust and rice awns in the regenerated rice seeds, and the blocking strip 408 divides the seed tray into 28 areas of different sizes, so that the seeds move up and down in the fixed area, to prevent deviation and accumulation.

[0046] When the seed sowing device works, the corrugated pipe is used to connect the air supply port of the multi-pin seed suction tray 3 and the fan device 5, the power supply is started, and the multi-degree-of-freedom mechanical arm 1, the vibrating seed table 4 and the fan device 5 are kept in the running state, the fan device 5 can provide continuous and stable negative pressure for the seed suction tray, the fan device 5 moves to above the seed tray 403 of the vibrating seed table 4, the electric cylinder 404 drives the vibrating seed tray to vibrate upward, the seeds are dispersed due to the upward thrust of the seed tray 403, the gravity of the seeds and the interaction force, the dispersed seeds are adsorbed by the suction pins 301 when passing through the suction pins 301, the seed suction stage is completed, after the seed suction is completed, the multi-degree-of-freedom mechanical arm 1 drives the seed suction tray to move to above the seed tray, the electromagnetic valve installed on the air inlet 503 of the fan device 5 is closed, the seeds on the suction pins 301 realize seed sowing under the gravity of the seeds, and the above steps are repeated to realize sowing. When the suction pins 301 are blocked or receive a seed cleaning instruction, the air cylinder 206 drives the seed cleaning device 2 to move upward, the multi-degree-of-freedom mechanical arm 1 drives the seed suction tray to move from above the seed cleaning device 2, and the seed cleaning is realized.

[0047] The seed cleaning mode includes a regular seed cleaning mode and a manual seed cleaning mode. When the regular seed cleaning is implemented, when the number of sowing reaches the set requirement, the cylinder 206 drives the oblique brush 204 and the vertical brush 205 to move upward, the multi-degree-of-freedom robot arm 1 drives the multi-needle seed suction plate 3 to move from above the seed cleaning brush, the multi-angle seed suction needle 301 is cleaned by the oblique brush 204 and the vertical brush 204 on the seed cleaning device 2, and the seed suction needle 301 is ensured to be not blocked; when the seed suction needle 301 is found to be blocked, the operator can manually start the seed cleaning, the cylinder 206 drives the seed cleaning device 2 to move upward, the multi-degree-of-freedom robot arm 1 drives the multi-needle seed suction plate 3 to move from above the seed cleaning brush, the multi-angle seed suction needle 301 is cleaned by the oblique brush 204 and the vertical brush 205 on the seed cleaning device 2, so that the seed suction needle 301 is ensured to be not blocked, the seed suction precision of the seed suction needle 301 is improved, and the sowing effect is optimized.

[0048] The vertical brush 205 is provided with two layers of sawtooth-shaped bristles, the first layer of bristles is in a low-density sawtooth shape, the sawtooth and pointed parts correspond to the positions of the needle holes of the seed suction needle, when the seed cleaning operation is performed, the seed suction plate moves from above the brush, the sawtooth on the brush extends into the inside of the needle hole of the seed suction needle in sequence, and the blockage in the needle hole of the seed suction needle is cleaned in a fixed position; the second layer of bristles is in a high-density sawtooth shape, and the blockage that is not cleaned by the low-density sawtooth bristles and is not dropped is further cleaned in depth, and the seed cleaning effect is improved. The first layer of bristles is located in front of the second layer of bristles, that is, the first layer of bristles works first; the sawtooth of the first layer of bristles is staggered with the sawtooth of the second layer of bristles. The height of the oblique brush 204 is greater than that of the vertical brush 205, and the hardness of the oblique brush 204 is less than that of the vertical brush 205, so that the foreign matter outside the needle hole can be better cleaned, and the outside of the needle hole will not be scratched, and the hardness of the vertical brush 205 is large, so that the blockage can be easily removed. The oblique brush 204 and the vertical brush 205 realize seed cleaning at different angles, and are used in cooperation, so that multi-dimensional cleaning of three layers of brushes is realized, the seed cleaning effect is ensured, and the precision sowing is ensured.

[0049] It should be understood that although the present specification is described in terms of various embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0050] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A regenerated rice seedling raising whole tray air suction type precision seed metering device with seed cleaning function, characterized in that, It comprises a multi-degree-of-freedom mechanical arm (1), a seed cleaning device (2), a multi-needle seed suction disc (3), a vibrating seed table (4) and a fan device (5); The multi-degree-of-freedom mechanical arm (1) is connected with the multi-needle seed suction disc (3) and is used for moving the multi-needle seed suction disc (3) between a seed suction position and a seed discharge position; the vibrating seed table (4) is located at the seed suction position, the seed cleaning device (2) is installed on a frame of the vibrating seed table (4), an electric cylinder (404) is arranged in the frame of the vibrating seed table (4) and is used for vibrating the seed table; the fan device (5) is communicated with a gas inlet of the multi-needle seed suction disc (3). The vibrating seed table (4) comprises a frame (401), a seed disc base (402), a seed disc (403), the electric cylinder (404) and a base (405); the seed disc (403) is located in the seed disc base (402), the seed disc base (402) is installed on the frame (401), the electric cylinder (404) is installed on the frame (401), one end of the electric cylinder (404) penetrates through the seed disc base (402) and is connected with the seed disc (403), and the electric cylinder (404) is used for moving the seed disc (403) up and down in the seed disc base (402). The seed disc (403) is divided into several areas by a plurality of longitudinal and transverse intersecting blocking bars (408), and at least one impurity removing fine gap (406) is arranged in each area and is used for screening impurities. The seed cleaning device comprises a fixed horizontal rod, a brush base (203), an obliquely arranged brush (204), a vertically arranged brush (205) and a gas cylinder (206); the gas cylinder (206) is installed on the frame of the vibrating seed table (4) through the fixed horizontal rod; a stretching rod of the gas cylinder (206) is connected with the brush base (203), the brush base (203) is respectively provided with the obliquely arranged brush (204) and the vertically arranged brush (205), the obliquely arranged brush (204) is located outside the brush base (203) and is driven by the gas cylinder (206) to move linearly; the vertically arranged brush (205) is provided with two layers of sawtooth-shaped brush hairs, the first layer of brush hairs is in a low-density sawtooth shape, the second layer of brush hairs is in a high-density sawtooth shape, the first layer of brush hairs is located in front of the second layer of brush hairs, the sawteeth of the first layer of brush hairs are staggered with the sawteeth of the second layer of brush hairs, and the hardness of the obliquely arranged brush (204) is less than that of the vertically arranged brush (205).

2. The precision seed sowing device with seed cleaning function according to claim 1, characterized in that, The angle between the obliquely arranged brush (204) and the vertically arranged brush (205) is an acute angle.

3. The precision seed sowing device with seed cleaning function according to claim 1, characterized in that, The multi-needle seed suction disc (3) comprises a suction needle (301), a suction needle base (302), a suction needle flat plate (303) and a gas chamber (305); one side of the suction needle flat plate (303) is provided with the gas chamber (305), the other side of the suction needle flat plate (303) is provided with a plurality of uniformly distributed suction needle bases (302), each suction needle base (302) is provided with a suction needle (301), and the suction needle (301) is communicated with the gas chamber (305); the gas chamber (305) is communicated with the fan device (5) and is used for providing negative pressure required by the suction disc.

4. The precision seed sowing device with seed cleaning function according to claim 1, characterized in that, The length of the impurity removing fine slit (406) is 36-40 mm, and the width is 1-3 mm.

5. The precision seed sowing device with the seed cleaning function according to claim 3, characterized in that, The air chamber (305) is divided into two independent left air chamber and right air chamber, the fan device (5) includes first high pressure fan (501) and second high pressure fan (502); the first high pressure fan (501) is communicated with the first air source port (306) of left air chamber through corrugated pipe, the second high pressure fan (502) is communicated with the second air source port (308) of right air chamber through corrugated pipe.

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