A wheat rotary tillage seeder with impurity screening and separation mechanism

Abstract

The present invention discloses a wheat rotary tillage seeder with an impurity screening and separation mechanism, which relates to the technical field of wheat sowing impurity screening, and comprises a father-row seedling platform, a partition is fixedly installed on the surface of the father-row seedling platform, a connecting seat is fixedly installed on the side of the father-row seedling platform away from the partition, and a processing port is opened on the father-row seedling platform, wherein the screening device comprises a loading plate, a supporting frame, a comb plate, a driving motor, a long plate, two convex rods, a clamping plate, a limit frame, a blocking plate and a No. 1 spring, the loading plate is fixedly installed on the side of the father-row seedling platform close to the partition, and the supporting frame is fixedly installed on the side of the loading plate away from the father-row seedling platform, the blocking plate is moved to release the obstruction of the semicircular groove, and the screened wheat seedlings are output together to the father-row seedling platform, thereby effectively improving the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of wheat sowing impurity screening, in particular to a wheat rotary tillage seeder with an impurity screening and separation mechanism. Background Art

[0002] Wheat rotary tillage seeder is a kind of agricultural machinery equipment specially used for tilling and sowing wheat. Through automation and precise operation, it improves the sowing efficiency and sowing quality, and adapts to the demand of modern agriculture for efficient production.

[0003] The patent with patent announcement number CN114405816B relates to an impurity screening and separation mechanism of a wheat single-grain seeder, which belongs to the field of wheat sowing impurity screening. An impurity screening and separation mechanism of a wheat single-grain seeder comprises a screening box, the inner wall of the screening box is fixedly connected with an arc-shaped filter screen; a reciprocating screw rod is rotatably connected in the screening box, a slider is threadedly connected on the reciprocating screw rod, a screening plate matched with the filter screen is slidably connected at the bottom of the slider, and a serrated groove is provided at the bottom of the screening plate; a frame plate is provided in the screening box, the frame plate is located below the filter screen, a raised portion is provided in the frame plate, and filter holes are provided on the frame plate and the raised portion; a push block is slidably connected in the frame plate, and a planting rod is provided at the bottom of the push block; this patent can effectively screen and separate impurities in wheat seeds during sowing, reduces labor intensity, improves work efficiency, and is easy to use.

[0004] The above patent has the function of screening and separating impurities in wheat seeds. A screening plate that cooperates with the filter is slidably connected to the bottom of the slider, so that impurities can be effectively screened and separated during sowing, reducing labor intensity and improving work efficiency. However, when screening foreign matter, there is a situation where wheat seeds are detached. The detached seeds will accumulate in other parts of the seeder, increasing the difficulty of cleaning and maintenance. Long-term accumulation is likely to lead to a decline in machine performance or failure, further increasing maintenance costs and downtime. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a wheat rotary tillage seeder with an impurity screening and separation mechanism, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wheat rotary tillage seeder with an impurity screening and separation mechanism, comprising a father-row planting platform, a partition is fixedly installed on the surface of the father-row planting platform, a connecting seat is fixedly installed on the side of the father-row planting platform away from the partition, and a processing port is opened on the father-row planting platform, wherein the screening device comprises a loading plate, a support frame, a comb plate, a driving motor, a long plate, two convex rods, a card plate, a limit frame, a blocking plate and a No. 1 spring, the convex rod is pulled to move in a direction away from the comb plate, and the movement of the convex rod drives the card plate to move in a direction away from the comb plate, the loading plate is fixedly installed on a side of the father-row planting platform close to the partition, the supporting frame is fixedly installed on a side of the loading plate away from the father-row planting platform, the comb plate slides through the inner and outer walls of the supporting frame, and the driving motor is fixedly installed The cam is fixedly connected to the output end of the driving motor, and the two convex rods are slidably connected to the two ends of the comb tooth plate to push the convex rod to move in the direction of the loading plate. The movement of the convex rod drives the comb tooth plate to move in the direction of the loading plate. The movement of the loading plate drives the driving motor to move in the direction of the loading plate. The card plate is fixedly installed on the circumferential surface of the convex rod, and the limit frame is fixedly installed on the side of the support frame close to the convex rod. The blocking plate slides through the inner and outer walls of the support frame, and the No. 1 spring is arranged between the blocking plate and the support frame. A semicircular groove is provided on the side of the loading plate close to the comb tooth plate, and an arc surface one matching the semicircular groove is provided on the comb tooth plate. A brush is provided on the side of the long plate away from the comb tooth plate, and a sieve hole is provided on the side of the blocking plate close to the semicircular groove.

[0007] According to the above technical solution, the brushes are evenly distributed on one side of the long plate close to the semicircular groove, the card plate contacts the inner wall of the limit frame, and the side of the card plate in contact with the limit frame is separated during movement, so that the limit imposed by the support frame on the comb plate is released.

[0008] According to the above technical solution, the blocking plate is provided with an arc surface 2 which is adapted to the semicircular groove, and the arc surface 2 contacts the inner wall of the semicircular groove. The arc surface 2 of the blocking plate is separated from the side in contact with the semicircular groove during the movement, so that the blocking of the semicircular groove by the arc surface 2 is released.

[0009] According to the above technical scheme, the protection device includes a hollow tube, a round rod, a No. 2 spring, a C-shaped plate, a blocking piece, a resist block, a contact block and a No. 1 spring piece. When the card plate moves toward the loading plate, it contacts the C-shaped plate. The card plate continues to move and applies a thrust to the C-shaped plate. The C-shaped plate moves toward the hollow tube under the influence of the thrust. The hollow tube is fixedly passed through a side of the loading plate close to the support frame, and the round rod slides through a side of the hollow tube away from the loading plate. The No. 2 spring is arranged between the round rod and the hollow tube. The round rod squeezes the No. 2 spring during the movement, and the No. 2 spring is deformed due to the squeezing. The deformed No. 2 spring applies a reaction force to the round rod under the action of its own elasticity. The C-shaped plate is fixedly installed on one end of the round rod away from the No. 2 spring. The blocking piece is fixedly installed on the circumferential surface of the round rod. The resist block is fixedly installed on the inner wall of the hollow tube. The contact block slides through the surface of the C-shaped plate. The No. 1 spring piece is arranged between the contact block and the C-shaped plate, and the blocking piece itself is elastic.

[0010] According to the above technical solution, a side of the blocking plate close to the stop block is provided with an arc surface three, and the arc surface three of the blocking plate contacts the elastic protrusion on the stop block during movement. The arc surface three continues to move and is subject to resistance exerted by the elastic protrusion. The blocking plate is deformed due to the resistance, and a side of the stop block close to the No. 2 spring is provided with an elastic protrusion.

[0011] According to the above technical solution, the contact block is provided with an arc surface four on one side close to the hollow tube, and the arc surface four of the C-shaped plate contacts the inner wall of the loading plate during movement. The movement of the arc surface four is subject to resistance exerted by the loading plate, and the contact block moves toward the C-shaped plate under the influence of the resistance. The contact block is provided with a corrugation one on one side away from the first spring sheet.

[0012] According to the above technical scheme, the processing device includes a connecting frame, a cylindrical rod, a No. 3 spring, a linkage plate, a guide plate, a gate-shaped block and a No. 2 spring piece. When the C-shaped plate moves, it contacts the linkage plate. The movement of the C-shaped plate applies a thrust to the linkage plate, so that the movement of the C-shaped plate drives the linkage plate to move toward the connecting frame. The connecting frame is fixedly installed at the bottom of the loading plate, and the cylindrical rod slides through a side of the connecting frame close to the support frame. The No. 3 spring is arranged between the cylindrical rod and the connecting frame, the linkage plate is fixedly installed on the circumferential surface of the cylindrical rod, and the guide plate is fixedly installed on the circumferential surface of the cylindrical rod. Soil and foreign matter move to the top of the guide plate through the sieve hole, and the top of the guide plate guides the soil and foreign matter to move toward the processing port. The gate-shaped block slides through the bottom of the cylindrical rod, and the No. 2 spring piece is arranged between the gate-shaped block and the cylindrical rod. A rectangular groove is provided at the bottom of the connecting frame.

[0013] According to the above technical solution, an arc surface five is provided at the bottom of the door-shaped block, and the arc surface five contacts the bottom of the connecting frame. The No. 2 spring piece is restored to drive the door-shaped block to move downward. The arc surface five contacts the inner wall of the rectangular groove during the movement, so that the movement of the cylindrical rod is restricted by the connecting frame.

[0014] The present invention provides a wheat rotary tillage seeder with an impurity screening and separation mechanism. It has the following beneficial effects:

[0015] (1) The wheat rotary tillage seeder with an impurity screening and separation mechanism has a brush that cleans soil and foreign matter adhering to the surface of the wheat seedlings during movement, and clamps the upper part of the wheat seedlings with an arc surface to ensure that the wheat seedlings will not shake during the cleaning process and affect the smooth screening of impurities, thereby effectively improving the screening effect. After the obstruction is removed, the wheat seedlings move downward and separate from the semicircular groove, allowing the wheat seedlings to continue moving and contact the male row planting platform. The obstruction of the semicircular groove is removed by moving the blocking plate, and the screened wheat seedlings are output together to the male row planting platform, thereby effectively improving work efficiency.

[0016] (2) In the wheat rotary tillage seeder with impurity screening and separation mechanism, the round rod transmits the reaction force to the C-shaped plate, and the moving speed of the C-shaped plate is slowed down by the reaction force. By slowing down the moving speed of the C-shaped plate, it helps to improve the safety during operation. At the same time, the arc surface three and the elastic protrusion intermittently contact and produce jitter, which effectively prevents the round rod from getting stuck when moving. The corrugated surface one moves and produces friction with the inner wall of the loading plate. The friction force increases the resistance encountered by the contact block when it moves. By increasing the resistance encountered by the C-shaped plate when it moves to a specified position, the protection effect is effectively improved to prevent the comb plate from losing control and hitting the loading plate during movement.

[0017] (3) In the wheat rotary tillage planter with impurity screening and separation mechanism, the top of the guide plate guides soil foreign matter to move toward the processing port, and the soil foreign matter is discharged through the processing port during movement. By guiding the soil foreign matter discharged from the sieve hole to the processing port, the soil foreign matter will not fall onto the male row rice planting platform, so that the male row rice planting platform can be kept clean before use. The arc surface five contacts the inner wall of the rectangular groove during movement, so that the movement of the cylindrical rod is restricted by the connecting frame. By limiting the cylindrical rod moved to the predetermined position, it is ensured that the guide plate will not deviate from the specified position during the screening process, thereby ensuring the stability of the guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of a half-section structure of the male parent row seedling planting platform of the present invention;

[0020] Figure 3It is a schematic diagram of the position structure of the loading plate and the comb plate of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the screening device of the present invention;

[0022] Figure 5 It is a schematic diagram of the position structure of the long board and the comb plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the position structure of the blocking plate and the first spring of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the protection device of the present invention;

[0025] Figure 8 Schematic diagram of the internal structure of the processing device of the present invention.

[0026] In the figure: 1. male row planting platform; 2. partition; 3. connecting seat; 4. loading plate; 5. support frame; 6. comb plate; 7. driving motor; 8. long plate; 9. convex rod; 10. clamping plate; 11. limit frame; 12. blocking plate; 13. spring No. 1; 141. hollow tube; 142. round rod; 143. spring No. 2; 144. C-shaped plate; 145. blocking piece; 146. resisting block; 147. contact block; 148. spring No. 1; 151. connecting frame; 152. cylindrical rod; 153. spring No. 3; 154. linkage plate; 155. guide plate; 156. door-shaped block; 157. spring No. 2. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 6, one embodiment of the present invention is: a wheat rotary tillage seeder with an impurity screening and separation mechanism, comprising a male row planting platform 1, a partition 2 is fixedly installed on the surface of the male row planting platform 1, a connecting seat 3 is fixedly installed on the side of the male row planting platform 1 away from the partition 2, a processing port is opened on the male row planting platform 1, and also includes a screening device; wherein the screening device includes a loading plate 4, a support frame 5, a comb plate 6, a drive motor 7, a long plate 8, two convex rods 9, a card plate 10, a limit frame 11, a blocking plate 12 and a No. 1 spring 13, the loading plate 4 is fixedly installed on the side of the male row planting platform 1 close to the partition 2, the support frame 5 is fixedly installed on the side of the loading plate 4 away from the male row planting platform 1, the comb plate 6 slides through the inner and outer walls of the support frame 5, the drive motor 7 is fixedly installed on the side of the comb plate 6 away from the loading plate 4, and the long plate 8 slides through It is passed through the side of the comb plate 6 close to the loading plate 4, the long plate 8 is fixedly connected to the output end of the driving motor 7, the two convex rods 9 slide through the two ends of the comb plate 6, the card plate 10 is fixedly installed on the circumferential surface of the convex rod 9, the limit frame 11 is fixedly installed on the side of the support frame 5 close to the convex rod 9, the blocking plate 12 slides through the inner and outer walls of the support frame 5, and a spring 13 is arranged between the blocking plate 12 and the support frame 5. A semicircular groove is provided on the side of the loading plate 4 close to the comb plate 6, and an arc surface 1 that is adapted to the semicircular groove is provided on the comb plate 6. A brush is provided on the side of the long plate 8 away from the comb plate 6, and a sieve hole is provided on the side of the blocking plate 12 close to the semicircular groove. The upper half of the wheat seedlings is clamped by the arc surface 1 to ensure that the wheat seedlings will not shake during the cleaning process and affect the smooth screening of impurities, which helps to improve the stability of the screening process.

[0029] The brushes are evenly distributed on one side of the long plate 8 close to the semicircular groove. The card plate 10 contacts the inner wall of the limit frame 11, and the limit frame 11 and the card plate 10 are contacted to limit the position, which makes it convenient for the staff to quickly release the limit of the card plate 10 to perform screening work, thereby improving work efficiency.

[0030] The blocking plate 12 is provided with an arc surface 2 which is matched with the semicircular groove. The arc surface 2 contacts the inner wall of the semicircular groove. The blocking plate 12 is moved to release the obstruction on the semicircular groove, and the screened wheat seedlings are output to the father row planting platform 1 together, thereby reducing the burden on the staff and effectively improving work efficiency.

[0031] When the present embodiment is working, the wheat seedlings are manually placed into the semicircular groove, the wheat seedlings move downward and contact the top of the blocking plate 12, the convex rod 9 is pulled to move in the direction away from the comb plate 6, the convex rod 9 moves to drive the card plate 10 to move in the direction away from the comb plate 6, the card plate 10 is separated from the side in contact with the limit frame 11 during the movement, so that the limit imposed on the comb plate 6 by the support frame 5 is released, and the convex rod 9 is pushed to move in the direction of the loading plate 4, the convex rod 9 moves to drive the comb plate 6 to move in the direction of the loading plate 4, the loading plate 4 moves to drive the drive motor 7 to move in the direction of the loading plate 4, and the drive motor 7 moves The long board 8 is driven to move toward the loading board 4. The arc surface 1 of the comb plate 6 contacts the upper part of the wheat seedlings during the movement. The arc surface 1 continues to move to clamp the wheat seedlings. At the same time, the brush of the long board 8 contacts the lower part of the wheat seedlings during the movement. The driving motor 7 is started. The output end of the driving motor 7 drives the long board 8 to move back and forth. The reciprocating movement of the long board 8 drives the brush to move back and forth. The brush cleans the soil and foreign matter adhering to the surface of the wheat seedlings during the movement. The cleaned soil and foreign matter are discharged through the sieve holes on the blocking plate 12, and the upper part of the wheat seedlings is clamped by the arc surface 1. , ensuring that the brush will not shake during the cleaning process and affect the smooth screening of impurities. After the impurity screening is completed, the convex rod 9 is pushed to move in the direction away from the loading plate 4. The movement of the convex rod 9 drives the comb plate 6 to move in the direction away from the loading plate 4. The arc surface 1 is separated from the side in contact with the wheat seedlings during the movement, so that the clamping of the comb plate 6 on the wheat seedlings is released. At the same time, the convex rod 9 moves to drive the card plate 10 to move in the direction away from the loading plate 4. The card plate 10 contacts the surface of the blocking plate 12 during the movement. The card plate 10 continues to move to apply thrust to the blocking plate 12. 2 is affected by the thrust and moves in the direction away from the loading plate 4. The blocking plate 12 stretches the No. 1 spring 13 during the movement. The No. 1 spring 13 is deformed by the stretching. At the same time, the arc surface 2 of the blocking plate 12 is separated from the side in contact with the semicircular groove during the movement, so that the blocking of the semicircular groove by the arc surface 2 is released. After the blocking is released, the wheat seedlings move downward and separate from the semicircular groove, so that the wheat seedlings continue to move and contact the father row rice planting platform 1. The blocking of the semicircular groove is released by the movement of the blocking plate 12, and the screened wheat seedlings are output to the father row rice planting platform 1 together, which effectively improves the work efficiency.

[0032] See also Figure 1-Figure 8On the basis of the above embodiment, another embodiment of the present invention further includes a protection device and a processing device; the protection device includes a hollow tube 141, a round rod 142, a second spring 143, a C-shaped plate 144, a blocking piece 145, a stop block 146, a contact block 147 and a first spring piece 148, the hollow tube 141 is fixedly penetrated through a side of the loading plate 4 close to the support frame 5, the round rod 142 is slidably penetrated through a side of the hollow tube 141 away from the loading plate 4, the second spring 143 is arranged between the round rod 142 and the hollow tube 141, the C-shaped plate 144 It is fixedly installed on one end of the round rod 142 away from the No. 2 spring 143, the blocking piece 145 is fixedly installed on the circumferential surface of the round rod 142, the stop block 146 is fixedly installed on the inner wall of the hollow tube 141, the contact block 147 slides through the surface of the C-shaped plate 144, the No. 1 spring piece 148 is arranged between the contact block 147 and the C-shaped plate 144, the blocking piece 145 itself is elastic, and exerts a reaction force on the round rod 142 through the No. 2 spring 143 during the deformation process, so as to avoid the round rod 142 from being moved by accidental touch in daily life, which helps to improve the accuracy of operation.

[0033] A third arc surface is provided on one side of the blocking piece 145 close to the stop block 146, and an elastic protrusion is provided on one side of the stop block 146 close to the No. 2 spring 143. This helps to improve safety during operation by slowing down the movement of the C-shaped plate 144. At the same time, the third arc surface and the elastic protrusion are in intermittent contact to produce vibration, causing the round rod 142 to shake during movement, effectively preventing the round rod 142 from getting stuck during movement.

[0034] A fourth arc surface is provided on one side of the contact block 147 close to the hollow tube 141, and a first corrugation is provided on one side of the contact block 147 away from the first spring piece 148. This increases the resistance encountered by the C-shaped plate 144 when it moves to a specified position, thereby effectively improving the protective effect and preventing the comb plate 6 from losing control and hitting the loading plate 4 during movement, thereby improving the protective capability to cope with emergencies.

[0035] The processing device includes a connecting frame 151, a cylindrical rod 152, a No. 3 spring 153, a linkage plate 154, a guide plate 155, a gate block 156 and a No. 2 spring piece 157. The connecting frame 151 is fixedly installed at the bottom of the loading plate 4, the cylindrical rod 152 slides through the side of the connecting frame 151 close to the support frame 5, the No. 3 spring 153 is arranged between the cylindrical rod 152 and the connecting frame 151, the linkage plate 154 is fixedly installed on the circumferential surface of the cylindrical rod 152, the guide plate 155 is fixedly installed on the circumferential surface of the cylindrical rod 152, the gate block 156 slides through the bottom of the cylindrical rod 152, the No. 2 spring piece 157 is arranged between the gate block 156 and the cylindrical rod 152, and a rectangular groove is opened at the bottom of the connecting frame 151. By guiding the soil and foreign matter discharged from the sieve hole to the processing port, the soil and foreign matter will not fall into the father row rice planting platform 1, ensuring that the father row rice planting platform 1 remains clean before use.

[0036] The bottom of the door-shaped block 156 is provided with an arc surface 5, which contacts the bottom of the connecting frame 151. By limiting the cylindrical rod 152, it is ensured that the guide plate 155 will not deviate from the specified position during the screening process, thereby ensuring the stability of the guidance.

[0037] When the present embodiment is working, the card plate 10 contacts the C-shaped plate 144 when it moves toward the loading plate 4. The card plate 10 continues to move to apply a thrust to the C-shaped plate 144. The C-shaped plate 144 is affected by the thrust and moves toward the hollow tube 141. The movement of the C-shaped plate 144 drives the round rod 142 to move toward the hollow tube 141. The round rod 142 squeezes the No. 2 spring 143 during the movement. The No. 2 spring 143 is squeezed and deformed. The deformed No. 2 spring 143 exerts a reaction force on the round rod 142 under the action of its own elasticity. The round rod 142 The force is transmitted to the C-shaped plate 144. The speed of the C-shaped plate 144 is slowed down by the reaction force. The round rod 142 moves while driving the blocking piece 145 to move in the direction of the stop block 146. The arc surface 3 of the blocking piece 145 contacts the elastic protrusion on the stop block 146 during the movement. The arc surface 3 continues to move and is resisted by the elastic protrusion. The blocking piece 145 is deformed by the resistance. When the arc surface 3 separates from the elastic protrusion, the deformed blocking piece 145 recovers under the action of its own elasticity, so that the arc surface 3 and the elastic protrusion are intermittently in contact and produce continuous jitter. Slowing down the speed of the C-shaped plate 144 helps to improve the safety during operation. At the same time, the arc surface three and the elastic protrusion intermittently contact and generate jitter, which effectively prevents the round rod 142 from getting stuck when moving. The movement of the C-shaped plate 144 drives the contact block 147 to move toward the hollow tube 141. The arc surface four of the C-shaped plate 144 contacts the inner wall of the loading plate 4 during the movement. The movement of the arc surface four is subject to the resistance applied by the loading plate 4. The contact block 147 is affected by the resistance and moves toward the C-shaped plate 144. The contact block 147 squeezes the No. 1 spring piece 148 during the movement. The No. 1 spring piece 148 is pressed against the contact block 147. The sheet 148 is deformed by being squeezed, and the deformed spring sheet 148 exerts a thrust on the contact block 147 under the action of its own elasticity. The corrugation 1 of the contact block 147 is affected by the thrust and is in close contact with the inner wall of the loading plate 4, so that the corrugation 1 moves and generates friction with the inner wall of the loading plate 4. The friction force increases the resistance encountered by the contact block 147 when it moves, so that the moving speed of the contact block 147 is controlled. By increasing the resistance encountered by the C-shaped plate 144 when it moves to a specified position, the protective effect is effectively improved to prevent the comb plate 6 from losing control and hitting the loading plate 4 during movement.

[0038] When the C-shaped plate 144 moves, it contacts the linkage plate 154. The movement of the C-shaped plate 144 applies a thrust to the linkage plate 154, so that the movement of the C-shaped plate 144 drives the linkage plate 154 to move toward the connecting frame 151. The movement of the linkage plate 154 drives the cylindrical rod 152 to move toward the connecting frame 151. The cylindrical rod 152 squeezes the No. 3 spring 153 during the movement. The No. 3 spring 153 is squeezed and deformed. At the same time, the movement of the cylindrical rod 152 drives the guide plate 155 to move toward the processing port. The guide plate 155 stops moving after moving to the specified position. During screening, soil foreign matter moves to the top of the guide plate 155 through the sieve holes. The top of the guide plate 155 guides the soil foreign matter to move toward the processing port. The soil foreign matter is discharged through the processing port during the movement. By guiding the soil foreign matter discharged from the sieve holes to the processing port, the soil foreign matter is not The movement of the cylindrical rod 152 drives the gate block 156 to move away from the linkage plate 154. The arc surface 5 of the gate block 156 separates from the inner wall of the connecting frame 151 during the movement, so that the squeezed No. 2 spring piece 157 recovers under the action of its own elasticity. The recovery of the No. 2 spring piece 157 drives the gate block 156 to move downward. The arc surface 5 contacts the inner wall of the rectangular groove during the movement, so that the movement of the cylindrical rod 152 is restricted by the connecting frame 151. The cylindrical rod 152 cannot move, so that the squeezed No. 3 spring 153 cannot recover. By limiting the cylindrical rod 152 moved to the predetermined position, it is ensured that the guide plate 155 will not deviate from the specified position during the screening process, thereby ensuring the stability of the guidance.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheat rotary tillage planter with an impurity screening and separation mechanism, comprising a male row seedling planting platform (1), characterized in that: It also includes a screening device, a protection device and a processing device, wherein a partition plate (2) is fixedly mounted on the surface of the male row planting platform (1), a connecting seat (3) is fixedly mounted on a side of the male row planting platform (1) away from the partition plate (2), and a processing port is provided on the male row planting platform (1); The screening device comprises a loading plate (4), a support frame (5), a comb plate (6), a driving motor (7), a long plate (8), two convex rods (9), a clamping plate (10), a limit frame (11), a blocking plate (12) and a No. 1 spring (13), wherein the loading plate (4) is fixedly mounted on a side of the parent row planting platform (1) close to the partition plate (2), the supporting frame (5) is fixedly mounted on a side of the loading plate (4) away from the parent row planting platform (1), the comb plate (6) slides through the inner and outer walls of the supporting frame (5), the driving motor (7) is fixedly mounted on a side of the comb plate (6) away from the loading plate (4), the long plate (8) slides through the side of the comb plate (6) close to the loading plate (4), and the long plate (8) and the driving motor (7) are connected to each other. The output end of the motor (7) is fixedly connected, the two convex rods (9) are slidably inserted into the two ends of the comb plate (6), the clamping plate (10) is fixedly mounted on the circumferential surface of the convex rod (9), the limit frame (11) is fixedly mounted on a side of the support frame (5) close to the convex rod (9), the blocking plate (12) is slidably inserted into the inner and outer walls of the support frame (5), the first spring (13) is arranged between the blocking plate (12) and the support frame (5), a semicircular groove is provided on a side of the loading plate (4) close to the comb plate (6), an arc surface (1) matched with the semicircular groove is provided on the comb plate (6), a brush is provided on a side of the long plate (8) away from the comb plate (6), and a sieve hole is provided on a side of the blocking plate (12) close to the semicircular groove.

2. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 1, characterized in that: The brushes are evenly distributed on a side of the long plate (8) close to the semicircular groove, and the clamping plate (10) is in contact with the inner wall of the limiting frame (11).

3. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 2, characterized in that: The blocking plate (12) is provided with a second arc surface matched with the semicircular groove, and the second arc surface is in contact with the inner wall of the semicircular groove.

4. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 3, characterized in that: The protective device comprises a hollow tube (141), a round rod (142), a second spring (143), a C-shaped plate (144), a blocking sheet (145), a stop block (146), a contact block (147) and a first spring sheet (148); the hollow tube (141) is fixedly penetrated through a side of the loading plate (4) close to the support frame (5); the round rod (142) is slidably penetrated through a side of the hollow tube (141) away from the loading plate (4); the second spring (143) is arranged between the round rod (142) and the hollow tube ( 141), the C-shaped plate (144) is fixedly mounted on one end of the round rod (142) away from the second spring (143), the blocking piece (145) is fixedly mounted on the circumferential surface of the round rod (142), the stop block (146) is fixedly mounted on the inner wall of the hollow tube (141), the contact block (147) slides through the surface of the C-shaped plate (144), the first spring piece (148) is arranged between the contact block (147) and the C-shaped plate (144), and the blocking piece (145) itself has elasticity.

5. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 4, characterized in that: A third arc surface is provided on a surface of the blocking sheet (145) close to the stop block (146), and an elastic protrusion is provided on a surface of the stop block (146) close to the second spring (143).

6. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 5, characterized in that: A fourth arc surface is provided on a side of the contact block (147) close to the hollow tube (141), and a first corrugation is provided on a side of the contact block (147) away from the first spring sheet (148).

7. A wheat rotary tillage seeder with an impurity screening and separation mechanism according to claim 6, characterized in that: The processing device comprises a connecting frame (151), a cylindrical rod (152), a third spring (153), a linkage plate (154), a guide plate (155), a gate-shaped block (156) and a second spring sheet (157). The connecting frame (151) is fixedly mounted on the bottom of the loading plate (4). The cylindrical rod (152) slides through a side of the connecting frame (151) close to the support frame (5). The third spring (153) is arranged on the cylindrical rod (154). The connecting frame (151) is provided between the connecting frame (151), the linkage plate (154) is fixedly mounted on the circumferential surface of the cylindrical rod (152), the guide plate (155) is fixedly mounted on the circumferential surface of the cylindrical rod (152), the door-shaped block (156) is slidably penetrated through the bottom of the cylindrical rod (152), the second spring piece (157) is arranged between the door-shaped block (156) and the cylindrical rod (152), and a rectangular groove is provided at the bottom of the connecting frame (151).

8. The wheat rotary tillage seeder with impurity screening and separation mechanism according to claim 7, characterized in that: The bottom of the door-shaped block (156) is provided with an arc surface five, and the arc surface five contacts the bottom of the connecting frame (151).

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