CN113179713A

CN113179713A - Seed screening type seeder based on agricultural seeding and use method thereof

Info

Publication number: CN113179713A
Application number: CN202110574246.XA
Authority: CN
Inventors: 崇国华
Original assignee: Individual
Current assignee: Shandong Agricultural Technology Extension Center Shandong Agricultural And Rural Development Research Center
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-07-30
Anticipated expiration: 2041-05-25
Also published as: CN113179713B

Abstract

The invention relates to the technical field of agricultural seeders, in particular to a seed screening type seeder based on agricultural seeding and a use method thereof. It includes the screening broadcast seeder, and the screening broadcast seeder includes at least: the fixed support is provided with an installation plate, the installation plate is provided with an installation support, the installation plate is connected with a traction rod, the fixed support is provided with a rolling opening, and the fixed support is provided with a ditching plow and a pressing body; the seed feeding body comprises a first screening body, the first screening body comprises a hopper, the hopper is provided with a second sliding groove, the second sliding groove is connected with an oversize screening plate, and the hopper is communicated with the second screening body; the moving body comprises a broadcasting disc, the broadcasting disc is provided with a rotating shaft, the rotating shaft is connected with wheels, and the broadcasting disc is provided with a plurality of transfer bins. The invention mainly provides a seeder capable of screening seeds and a use method thereof.

Description

Seed screening type seeder based on agricultural seeding and use method thereof

Technical Field

The invention relates to the technical field of agricultural seeders, in particular to a seed screening type seeder based on agricultural seeding and a use method thereof.

Background

The planter uses crop seeds as planting object, mainly used for the planting operation of small-sized seeds such as grain, vegetable, forage grass, etc., during the operation, drive the rotation of the seed metering wheel by the walking wheel, the seed in the seed box is discharged into the seed conveying pipe according to the required seeding quantity, and fall into the good ditch groove through the furrow opener, then cover the seed by the earthing and pressing device and compact, the crop after emerging becomes parallel equidistant row, however, the existing planter can not screen the seed, make the seed quality unqualified and difficult to survive the growth, the seed size too big or undersized seed is also sowed in the soil, waste the cultivated land area, therefore need a planter and its application method that can screen the seed size.

Disclosure of Invention

The invention aims to provide a seed screening type seeder based on agricultural seeding and a use method thereof, so as to solve the problems in the background technology.

In order to achieve the above object, one of the objects of the present invention is to provide a seed screening-type sowing machine for agricultural sowing, comprising a screening sowing machine, wherein the screening sowing machine at least comprises:

the device comprises a fixed support, wherein the top of the fixed support is provided with a mounting plate, the mounting plate is provided with a mounting support, the mounting plate is connected with a traction rod, the fixed support is provided with a rolling port penetrating through the surface of the fixed support, and the bottom of the fixed support is provided with a ditching plow and a suppressing body;

the seed feeding body comprises a first screening body connected with the mounting plate, the first screening body comprises a hopper, the hopper is provided with a second sliding groove penetrating through the surface of the hopper, an oversize screening plate is connected in the second sliding groove in a sliding manner, and the bottom of the hopper is communicated with the second screening body;

the moving body, the moving body includes broadcast sowing dish, broadcast sowing dish is provided with the rotation axis, the rotation axis with roll the mouth and rotate and be connected, the rotation axis surface is connected with the wheel, the wheel is provided with the shaft groove that runs through its surface, the rotation axis with the shaft groove cooperation of pegging graft, broadcast sowing dish's surface is provided with a plurality of transfer storehouses, broadcast sowing dish with No. two screening physically contact.

As a further improvement of the technical scheme, the oversize screening plate is provided with a plurality of meshes penetrating through the surface of the oversize screening plate, a first moving groove is formed in the oversize screening plate, a transverse moving plate is arranged in the first moving groove, a second moving groove is formed in the oversize screening plate, a third moving groove is correspondingly formed in the transverse moving plate, and a longitudinal moving plate is arranged in the second moving groove and the third moving groove.

As a further improvement of the technical scheme, a cleaning frame is connected in the second sliding groove in a sliding mode, a first recycling box is communicated with the side face of the hopper, and the first recycling box is installed at the top of the installing support.

As a further improvement of the technical scheme, a undersize screening pipe is arranged at the top of the second screening body and communicated with the bottom of the hopper, a vertical pipe and an inclined pipe are communicated with the bottom of the undersize screening pipe, the size of the vertical pipe is smaller than that of the inclined pipe, and the vertical pipe is located under the undersize screening pipe.

As a further improvement of the technical scheme, the vertical pipe is communicated with a recovery pipe, the recovery pipe is communicated with a second recovery box, and the second recovery box is positioned at the top of the mounting bracket.

As a further improvement of the technical scheme, a sealing groove is formed in the transfer bin, a sealing body is arranged in the sealing groove and comprises a sealing plate, a contact rod is arranged on the sealing plate and provided with a return spring, the return spring is connected with the sealing body, the second screening body is correspondingly provided with a second contact body, the fixed support is correspondingly provided with a first contact body, and the first contact body and the second contact body are in contact with the contact rod.

As a further improvement of the technical scheme, the top plate is arranged at the top of the furrow plough and provided with a sliding body, the sliding body is a T-shaped structure protrusion, the bottom of the fixed support is correspondingly provided with a sliding groove, the sliding groove is a T-shaped structure groove, and the sliding body is in sliding connection with the sliding groove.

As a further improvement of this technical scheme, the fixed bolster is provided with the rotation groove, the suppression body is including the suppression board, the suppression board is provided with the regulation that runs through its surface and wears the mouth, it wears the mouth for the circular mouth of wearing of interior screwed to adjust to wear the mouth, it has the threaded rod to adjust to wear a female connection, the threaded rod bottom is provided with the rotation connector, rotate the connector with the rotation groove rotates and is connected.

As a further improvement of the technical scheme, the wheel is provided with an insertion port, the rotating shaft is correspondingly provided with a fixed penetrating port penetrating through the surface of the rotating shaft, the fixed penetrating port is provided with an insertion body, and the insertion body penetrates through the fixed penetrating port to be in insertion fit with the insertion port.

The invention also aims to provide a use method of the seed screening type seeder based on agricultural seeding, which comprises any one of the seed screening type seeders based on agricultural seeding, and comprises the following steps:

s1, transversely moving the transverse moving plate in the first moving groove and longitudinally moving the longitudinal moving plate in the second moving groove and the third moving groove;

s2, placing a large number of seeds into a hopper;

s3, intercepting oversize seeds on the surface of the oversize screening plate, and vertically passing the seeds through the screen mesh downwards through the undersize screening pipe;

s4, directly dropping the undersized seeds into the vertical tube, and moving the seeds with proper size along the inclined tube;

s5, driving the screening and sowing machine to move by the agricultural machine through the traction rod;

s6, rotating the wheels to drive the sowing plate to rotate;

s7, the contact rod is in contact with the second contact body to drive the closing plate to move until the middle rotating bin is exposed;

s8, feeding the seeds in the inclined tube into a transfer bin;

s9, the sowing plate rotates, and the return spring pushes the closing plate to return to close the transfer bin containing the seeds;

s10, the sowing disc rotates until the contact rod contacts with the first contact body to make the closing plate move to make the seeds fall into the ditches reclaimed by the ditching plow;

s11, the screening and sowing machine continues to move, and the soil is flattened by the compacting body.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the seed screening type seeder for agricultural seeding and the using method thereof, the transverse moving plate and the longitudinal moving plate are arranged to change the area of the sieving holes through which seeds can pass, so that oversize seeds can be screened out, the vertical pipe is arranged to screen out the undersize seeds, and the seeding efficiency of the device can be ensured.

2. According to the seed screening type seeder for agricultural seeding and the use method thereof, the transfer bin can be sealed by the sealing body, so that the seeds in the transfer bin are prevented from accidentally falling out when the seeding plate rotates, and the normal seeding of the seeds is ensured.

3. In the seed screening type seeder based on agricultural seeding and the use method thereof, the plug bodies are arranged to enable the seeding disc to synchronously rotate along with the wheels during seeding, and the seeding disc does not need to synchronously rotate along with the wheels during moving in a non-seeding area, so that the service life of the seeding disc is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the screening broadcast sowing machine of the present invention;

FIG. 3 is a cross-sectional view of the fixing bracket of the present invention;

FIG. 4 is a schematic diagram of a seed feeding body according to the present invention;

FIG. 5 is a schematic cross-sectional view of a screening body of the present invention;

FIG. 6 is a schematic cross-sectional structural view of an oversized screening plate of the present invention;

FIG. 7 is a schematic cross-sectional view of the second screening body of the present invention;

FIG. 8 is a schematic view of a movable body according to the present invention;

FIG. 9 is a schematic cross-sectional view of the broadcast plate of the present invention;

FIG. 10 is a schematic view of the closure panel of the present invention;

FIG. 11 is a schematic view of the furrow plow configuration of the present invention;

fig. 12 is a schematic view of the structure of the press body of the present invention.

The various reference numbers in the figures mean:

100. screening the broadcast sower;

110. fixing a bracket;

111. mounting a plate; 112. a draw bar; 113. rolling the opening; 114. mounting a bracket; 115. a rotating groove; 116. a first contact body; 117. a first sliding groove;

120. seed throwing bodies;

121. screening body No. one; 122. screening body II; 123. a hopper; 124. a second sliding groove; 125. oversize screening plate; 1251. screening; 1252. a first moving groove; 1253. transversely moving the plate; 1254. a second moving groove; 1255. a third moving groove; 1256. longitudinally moving the plate; 126. cleaning the frame; 1261. a first recycling bin; 127. sieving out the pipe; 1271. a vertical tube; 1272. an inclined tube; 128. a second contact body; 129. a recovery pipe; 1291. a second recycling bin;

130. a moving body;

131. a broadcast sowing plate; 132. a wheel; 133. a wheel axle slot; 134. an interface; 135. an insertion body; 136. a transfer bin; 137. closing the groove; 1371. an enclosure; 1372. a closing plate; 1373. a contact lever; 1374. a return spring; 138. a rotating shaft; 139. fixing the through hole;

140. a furrow plough;

141. a top plate; 142. a sliding body;

150. a compacting body;

151. pressing the plate; 152. adjusting the penetration; 153. a threaded rod; 154. the connecting body is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Example 1

Referring to fig. 1 to 10, an object of the present embodiment is to provide a seed screening-type sowing machine for agricultural sowing, including a screening sowing machine 100, wherein the screening sowing machine 100 includes:

the fixing support 110, the top of the fixing support 110 has mounting plates 111, the mounting plate 111 has mounting supports 114, the mounting plate 111 connects with the draw bar 112, the fixing support 110 has rolling ports 113 which run through its surface, the rolling ports 113 are round through ports, the bottom of the fixing support 110 has furrowing plows 140, the ballast 150;

the seed feeding body 120 comprises a first screening body 121 connected with the mounting plate 111, the first screening body 121 comprises a hopper 123, the hopper 123 is provided with a second sliding groove 124 penetrating through the surface of the hopper, an oversize screening plate 125 is slidably connected in the second sliding groove 124, and the bottom of the hopper 123 is communicated with a second screening body 122;

the moving body 130 comprises a broadcasting disc 131, the broadcasting disc 131 is provided with a rotating shaft 138, the rotating shaft 138 is rotatably connected with the rolling port 113, the surface of the rotating shaft 138 is connected with wheels 132, the wheels 132 are provided with wheel shaft grooves 133 penetrating through the surface of the wheels, the wheel shaft grooves 133 are circular penetrating ports, the rotating shaft 138 is in inserted fit with the wheel shaft grooves 133, the surface of the broadcasting disc 131 is provided with a plurality of transfer bins 136, the transfer bins 136 are semi-cylindrical grooves, and the broadcasting disc 131 is in contact with the second screening body 122.

In the specific use of the embodiment, the screening size adjustment of the seeds is preset, the transverse moving plate 1253 in the oversize screening plate 125 moves transversely in the first moving groove 1252 and the longitudinal moving plate 1256 moves longitudinally in the second moving groove 1254 and the third moving groove 1255, so that the accessible area of the screening holes 1251 is reduced to a suitable size, that is, the oversize seeds are not allowed to fall into the bottom through the screening holes 1251, a large number of seeds are put into the hopper 123, the oversize seeds are retained on the surface of the oversize screening plate 125 through the screening of the oversize screening plate 125, the seeds passing through the screening holes 1251 vertically and downwards pass through the undersize screening pipe 127 under the self gravity, the undersize seeds fall into the vertical pipe 1271 and are screened, the appropriate size seeds cannot fall into the vertical pipe 1271 due to the size of the appropriate size, and only can move along the inclined pipe 1272, the agricultural machine drives the screening broadcast machine 100 to move through the traction rod 112, when the seeding plate 131 rotates, the wheels 132 rotate to drive the seeding plate 131 to rotate, when the seeding plate 131 rotates, the contact rods 1373 in the closed groove 137 are in contact with the second contact bodies 128 and drive the closing plates 1372 to move in the closed groove 137 until the seeds in the inclined pipes 1272 are exposed, the second contact bodies 128 do not contact with the contact rods 1373, the closing plates 1372 are pushed to reset under the action of the reset springs 1374 to seal the intermediate bin 136 containing the seeds, and the seeding plate 131 continues to rotate until the contact rods 1373 are in contact with the first contact bodies 116, so that the closing plates 1372 move to expose the intermediate bin 136, the seeds fall into the ditches reclaimed by the ditching plow 140, and the compacting bodies 150 at the rear of the screening seeder 100 flatten the soil to complete seeding of the seeds.

Further, in order to screen off the oversize seeds, the oversize screening plate 125 is provided with a plurality of screen holes 1251 penetrating through the surface of the oversize screening plate, the screen holes 1251 are circular through holes, a first moving groove 1252 is formed in the oversize screening plate 125, a transverse moving plate 1253 is arranged in the first moving groove 1252, a second moving groove 1254 is formed in the oversize screening plate 125, a third moving groove 1255 is correspondingly formed in the transverse moving plate 1253, a longitudinal moving plate 1256 is arranged in the second moving groove 1254 and the third moving groove 1255, and the area of the screen holes 1251 through which the seeds can pass can be changed by the arrangement of the transverse moving plate 1253 and the longitudinal moving plate 1256, so that the oversize seeds are screened off.

Further in order to avoid the blockage in the hopper 123, the second sliding groove 124 is connected with a cleaning frame 126 in a sliding mode, the side face of the hopper 123 is communicated with a first recovery tank 1261, the first recovery tank 1261 is installed at the top of the mounting bracket 114, and the oversize seeds trapped on the surface of the oversize screening plate 125 can be recovered through the cleaning frame 126 and the first recovery tank 1261 so as to avoid the blockage in the hopper 123.

In order to ensure the seeding efficiency of the device, the top of the second screening body 122 is provided with the undersize screening pipe 127, the undersize screening pipe 127 is communicated with the bottom of the hopper 123, the bottom of the undersize screening pipe 127 is communicated with the vertical pipe 1271 and the inclined pipe 1272, the vertical pipe 1271 is smaller than the inclined pipe 1272, the vertical pipe 1271 is positioned right below the undersize screening pipe 127, the vertical pipe 1271 is arranged to screen the seeds, the undersize seeds are screened, and the seeding efficiency of the device is ensured.

Further, in order to avoid waste, the vertical pipe 1271 is communicated with the recovery pipe 129, the recovery pipe 129 is communicated with the second recovery tank 1291, the second recovery tank 1291 is positioned at the top of the mounting bracket 114, and the seeds with undersize can be recovered and reserved for other use by the recovery pipe 129 and the second recovery tank 1291, so that waste is avoided.

In addition, in order to ensure the normal sowing of the seeds, a closed groove 137 is arranged in the transfer bin 136, a closed body 1371 is arranged in the closed groove 137, the closed body 1371 comprises a closed plate 1372, the closed plate 1372 is provided with a contact rod 1373, the contact rod 1373 is provided with a return spring 1374, the return spring 1374 is connected with the closed body 1371, a second screening body 122 is correspondingly provided with a second contact body 128, the fixing support 110 is correspondingly provided with a first contact body 116, the first contact body 116 and the second contact body 128 are in contact with the contact rod 1373, the transfer bin 136 can be closed by the arrangement of the closed body 1371, and therefore the seeds in the transfer bin 136 are prevented from accidentally falling out when the sowing plate 131 rotates, and the normal sowing of the seeds is ensured.

Another object of the present invention is to provide a method for using a seed-screening-type sowing machine for agricultural sowing, including any one of the seed-screening-type sowing machines for agricultural sowing, including the following steps:

s1, transversely moving the transverse moving plate 1253 in the first moving groove 1252 and longitudinally moving the longitudinal moving plate 1256 in the second moving groove 1254 and the third moving groove 1255;

s2, placing a large number of seeds into the hopper 123;

s3, catching the oversize seeds on the surface of the oversize screening plate 125, and vertically passing the seeds through the screen holes 1251 downwards through the undersize screening pipe 127;

s4, directly dropping the undersized seeds into the vertical tube 1271, and moving the seeds with proper size along the inclined tube 1272;

s5, the agricultural machinery drives the screening and broadcasting machine 100 to move through the traction rod 112;

s6, the wheel 132 rotates to drive the broadcast plate 131 to rotate;

s7, the contact rod 1373 is in contact with the second contact body 128 to drive the closing plate 1372 to move until the transfer bin 136 is exposed;

s8, the seeds in the inclined tube 1272 enter the transfer bin 136;

s9, the sowing plate 131 rotates, and the return spring 1374 pushes the closing plate 1372 to return to close the transfer bin 136 containing the seeds;

s10, the sowing plate 131 rotates until the contact rod 1373 contacts the first contact body 116 to make the closing plate 1372 move to make the seeds fall into the ditches reclaimed by the digger plough 140;

s11, the screening and broadcasting machine 100 continues to move, and the soil is flattened by the compactor 150.

Example 2

Referring to fig. 11 to 12, in order to facilitate the movement in the non-sowing area while realizing the function of sowing seeds capable of screening the sizes of the seeds, the following improvements are made on the basis of the embodiment 1:

the top plate 141 is arranged at the top of the furrow plough 140, the top plate 141 is provided with a sliding body 142, the sliding body 142 is a T-shaped structure protrusion, the bottom of the fixing support 110 is correspondingly provided with a first sliding groove 117, the first sliding groove 117 is a T-shaped structure groove, the sliding body 142 is in sliding connection with the first sliding groove 117, and the first sliding groove 117 and the sliding body 142 which are in sliding connection can be used for realizing the dismounting and mounting of the furrow plough 140, so that the furrow plough 140 is taken down when the non-sowing area moves, and the influence on the movement of the screening plough broadcaster 100 is avoided.

In specific use, when the screening broadcast seeder 100 moves in a non-seeding area, the furrow plough 140 slides out along the first sliding groove 117 and is taken down, the threaded rod 153 is rotated in the rotating groove 115, so that the pressing plate 151 in threaded connection with the threaded rod 153 vertically ascends and descends along the threaded rod 153 to avoid the contact between the pressing plate 151 and the ground, the inserting body 135 moves in the fixed penetrating opening 139 to separate the inserting body 135 from the inserting opening 134, at the moment, the wheel 132 rotates by taking the rotating shaft 138 as a shaft and cannot drive the broadcast disk 131 to rotate, and therefore the abrasion of the contact position of the broadcast disk 131 and the second screening body 122 is reduced.

Further in order to avoid the suppression board 151 to contact with ground, fixed bolster 110 is provided with and rotates groove 115, it is for falling "T" type cylinder structure recess to rotate groove 115, suppression body 150 is including suppression board 151, suppression board 151 is provided with the regulation wearing hole 152 that runs through its surface, it is the circular wearing hole of interior screwed to adjust wearing hole 152, it has threaded rod 153 to adjust wearing hole 152 female connection, threaded rod 153 bottom is provided with rotates connector 154, it is "T" type cylinder structure to rotate connector 154, it is connected with rotation groove 115 rotation to rotate connector 154, thereby avoid suppression board 151 to contact with ground when screening broadcast seeder 100 removes through being provided with the height that threaded rod 153 can control suppression board 151.

Further in order to prolong the service life of the broadcast plate 131, the wheel 132 is provided with a plug 134, the plug 134 is a groove with a cylindrical structure, the rotating shaft 138 is correspondingly provided with a fixed through hole 139 penetrating through the surface of the rotating shaft, the fixed through hole 139 is a circular through hole, the fixed through hole 139 is provided with a plug 135, the plug 135 penetrates through the fixed through hole 139 to be in plug fit with the plug 134, the broadcast plate 131 can synchronously rotate along with the wheel 132 when seeding through the plug 135, the broadcast plate 131 does not need to synchronously rotate along with the wheel 132 when the non-seeding region moves, and the service life of the broadcast plate 131 is prolonged.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. Based on agricultural seeding is with seed screening type seeder, its characterized in that: comprising a screening broadcaster (100), said screening broadcaster (100) comprising at least:

the device comprises a fixed support (110), wherein a mounting plate (111) is arranged at the top of the fixed support (110), a mounting support (114) is arranged on the mounting plate (111), the mounting plate (111) is connected with a traction rod (112), the fixed support (110) is provided with a rolling opening (113) penetrating through the surface of the fixed support, and the bottom of the fixed support (110) is provided with a ditching plow (140) and a press body (150);

the seed particle feeding body (120) comprises a first screening body (121) connected with the mounting plate (111), the first screening body (121) comprises a hopper (123), the hopper (123) is provided with a second sliding groove (124) penetrating through the surface of the hopper, the second sliding groove (124) is connected with an oversize screening plate (125) in a sliding manner, and the bottom of the hopper (123) is communicated with a second screening body (122);

the moving body (130), the moving body (130) is including broadcasting dish (131), broadcasting dish (131) are provided with rotation axis (138), rotation axis (138) with roll mouth (113) and rotate and be connected, rotation axis (138) surface is connected with wheel (132), wheel (132) are provided with axle groove (133) that run through its surface, rotation axis (138) with axle groove (133) grafting cooperation, broadcasting dish (131) the surface is provided with a plurality of transfer storehouses (136), broadcasting dish (131) with No. two screening bodies (122) contact.

2. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: the oversize screening board (125) is provided with a plurality of meshes (1251) running through the surface of the oversize screening board, a first moving groove (1252) is formed in the oversize screening board (125), a transverse moving plate (1253) is arranged in the first moving groove (1252), a second moving groove (1254) is formed in the oversize screening board (125), a third moving groove (1255) is correspondingly formed in the transverse moving plate (1253), and a longitudinal moving plate (1256) is arranged in the second moving groove (1254) and the third moving groove (1255).

3. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: a cleaning frame (126) is connected in the second sliding groove (124) in a sliding mode, a first recovery box (1261) is communicated with the side face of the hopper (123), and the first recovery box (1261) is installed at the top of the installation support (114).

4. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: the top of the second screening body (122) is provided with a undersize screening pipe (127), the undersize screening pipe (127) is communicated with the bottom of the hopper (123), the bottom of the undersize screening pipe (127) is communicated with a vertical pipe (1271) and an inclined pipe (1272), the size of the vertical pipe (1271) is smaller than that of the inclined pipe (1272), and the vertical pipe (1271) is located right below the undersize screening pipe (127).

5. The seed screening type sowing machine for agricultural sowing according to claim 4, wherein: the vertical pipe (1271) is communicated with a recovery pipe (129), the recovery pipe (129) is communicated with a second recovery tank (1291), and the second recovery tank (1291) is positioned at the top of the mounting bracket (114).

6. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: be provided with in transfer storehouse (136) and seal groove (137), be provided with in the seal groove (137) and seal body (1371), seal body (1371) is including closing plate (1372), closing plate (1372) are provided with contact rod (1373), contact rod (1373) are provided with reset spring (1374), reset spring (1374) with seal body (1371) is connected, No. two screening bodies (122) correspond and are provided with No. two contact (128), fixed bolster (110) correspond and are provided with contact (116) No. one, contact (116) No. two contact (128) with contact rod (1373) contact.

7. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: the top of the furrow plough (140) is provided with a top plate (141), the top plate (141) is provided with a sliding body (142), the sliding body (142) is a T-shaped structure protrusion, the bottom of the fixed support (110) is correspondingly provided with a first sliding groove (117), the first sliding groove (117) is a T-shaped structure groove, and the sliding body (142) is in sliding connection with the first sliding groove (117).

8. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: fixed bolster (110) are provided with and rotate groove (115), the suppression body (150) is including suppression board (151), suppression board (151) are provided with the regulation that runs through its surface and wear mouthful (152), it wears mouthful (152) for the circular mouth of wearing of interior screwed to adjust to wear mouthful (152), it has threaded rod (153) to adjust to wear mouthful (152) female connection, threaded rod (153) bottom is provided with rotates connector (154), rotate connector (154) with it rotates groove (115) and is connected.

9. The seed screening type sowing machine for agricultural sowing according to claim 1, wherein: the wheel (132) is provided with a socket (134), the rotating shaft (138) is correspondingly provided with a fixed penetrating port (139) penetrating through the surface of the rotating shaft, the fixed penetrating port (139) is provided with an inserting body (135), and the inserting body (135) penetrates through the fixed penetrating port (139) to be matched with the socket (134) in an inserting manner.

10. Use method of a seed-screening-type sowing machine for agricultural sowing, comprising the seed-screening-type sowing machine for agricultural sowing according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:

s1, transversely moving the transverse moving plate (1253) in the first moving groove (1252) and longitudinally moving the longitudinal moving plate (1256) in the second moving groove (1254) and the third moving groove (1255);

s2, placing a large number of seeds into a hopper (123);

s3, intercepting the oversize seeds on the surface of the oversize screening plate (125), and vertically passing the seeds through the screen meshes (1251) downwards through the undersize screening pipe (127);

s4, directly dropping the undersized seeds into the vertical tube (1271), and moving the undersized seeds along the inclined tube (1272);

s5, the agricultural machinery drives the screening and broadcasting machine (100) to move through the traction rod (112);

s6, the wheel (132) rotates to drive the broadcast plate (131) to rotate;

s7, the contact rod (1373) is in contact with the second contact body (128) to drive the closing plate (1372) to move until the closing plate is exposed out of the transfer bin (136);

s8, the seeds in the inclined tube (1272) enter the transfer bin (136);

s9, the sowing plate (131) rotates, and the return spring (1374) pushes the closing plate (1372) to return to close the transfer bin (136) containing the seeds;

s10, the sowing plate (131) rotates until the contact rod (1373) contacts with the first contact body (116) to enable the closing plate (1372) to move so that the seeds fall into the ditches reclaimed by the ditching plow (140);

s11, the screening and sowing machine (100) continues to move, and the soil is flattened by the compacting body (150).