CN116076201A - Air suction type flexible high-speed precise peanut seed sowing device - Google Patents

Abstract

The invention relates to agricultural machinery, in particular to an air suction type flexible high-speed precise peanut seed metering device for a seeder. The device comprises a primary seed feeding device and a secondary seed feeding device, wherein the secondary seed feeding device is communicated with the bottom of the primary seed feeding device; the primary seed feeding device comprises a primary seed feeding front shell, a primary seed feeding rear shell and a seed metering disc, wherein the primary seed feeding front shell and the primary seed feeding rear shell are fixedly connected to form a cylindrical cavity, the seed metering disc is arranged in the cylindrical cavity, a top-cleaning mechanism, a bottom-cleaning mechanism and a flexible seed separating plate are arranged between the primary seed feeding front shell and the seed metering disc, and a sealing gasket, a negative pressure shell assembly and a flexible seed discharging mechanism are arranged between the seed metering disc and the primary seed feeding rear shell. The high-speed, precise and low-loss peanut seeding operation is realized, the peanut seeding efficiency is improved, the mechanized peanut planting level is improved, and the comprehensive peanut production capacity is enhanced.

Description

Air suction type flexible high-speed precise peanut seed sowing device

Technical Field

The invention relates to agricultural machinery, in particular to an air suction type flexible high-speed precise peanut seed metering device for a seeder.

Background

The research difficulty of peanut sowing equipment is increased due to factors such as uneven peanut grain size, high precision sowing requirement and the like. The problems of low sowing efficiency and poor sowing quality are particularly remarkable, and meanwhile, the land cultivation mode is continuously developed to a large-scale and intensive direction along with the acceleration of the land circulation process in China at present, so that the improvement of the operation efficiency is a necessary trend of future development. In order to better adapt to the development of the times and the requirements of efficient operation, the sowing process of the peanuts is more in accordance with the development pace, and the seed sowing device is used as a core component of the whole sowing equipment, and the seed sowing performance is one of important factors influencing the overall operation effect of the sowing machine. In order to further promote the mechanized sowing process of the peanuts, the air suction type flexible high-speed precise peanut seed sowing device is designed, and has important significance for promoting the efficient and high-quality development of sowing operation.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the air suction type flexible high-speed precise peanut seeding device, so that high-speed, precise and low-loss peanut seeding operation is realized, the peanut seeding efficiency is improved, the mechanized peanut planting level is improved, and the comprehensive peanut production capacity is enhanced.

The technical scheme of the invention is as follows: the air suction type peanut flexible high-speed precise seed metering device comprises a primary seed metering device and a secondary seed metering device, wherein the secondary seed metering device is communicated with the bottom of the primary seed metering device;

the primary seed feeding device comprises a primary seed feeding front shell, a primary seed feeding rear shell and a seed metering disc, wherein the primary seed feeding front shell and the primary seed feeding rear shell are fixedly connected to form a cylindrical cavity;

the seed feeding mechanism is arranged at the top of the first seed feeding front shell, the seed discharging mechanism is arranged below the seed feeding mechanism, the seed feeding mechanism comprises an adjusting plate and a seed feeding arc plate, the adjusting plate is fixed at the top of the first seed feeding front shell, an adjusting groove which is arranged along the radial direction of the first seed feeding front shell is formed in the adjusting plate, a seed feeding arc brush is fixed at the bottom of the seed feeding arc plate, seed feeding arc bristles are arranged in a seed feeding cavity and at the front side of a seed feeding disc, two ends of the seed feeding arc plate are respectively connected with two fixed clamping seats which are fixed at the top of the first seed feeding front shell in a sliding mode through connecting rods, the adjusting plate is connected with the seed feeding arc plate through screws, the screws respectively penetrate through the adjusting groove of the adjusting plate and the seed feeding arc plate, and seed feeding adjusting pointers, springs I and nuts I are sleeved on the screws in sequence from inside to outside;

the seed discharging mechanism comprises a seed discharging annular plate, a seed discharging annular brush is arranged on the side surface of the seed discharging annular plate, facing the seed metering disc, and is positioned below the seed discharging arc-shaped brush, a central screw rod is fixed on one side of the seed discharging annular plate, facing the primary seed feeding front shell, a seed discharging device supporting plate is fixed on the top of the inner wall of the primary seed feeding front shell, a radial inner groove opening is arranged on the seed discharging device supporting plate, a seed discharging device notch is correspondingly arranged on the primary seed feeding front shell, the end part of the central screw rod sequentially penetrates through the inner groove opening and the seed discharging device notch and is positioned on the outer side of the primary seed feeding front shell, a seed discharging adjusting pointer, a seed discharging adjusting spring and a seed discharging adjusting nut are sequentially arranged on the side end part of the central screw rod from inside to outside, and the central screw rod radially slides along the inner groove opening and the seed discharging device notch;

the seed metering disc is an annular disc, a seed metering rotating shaft is fixed at the center of the seed metering disc, seed taking grooves and seed stirring grooves are sequentially formed in the circumferential surface of the seed metering disc facing the primary seed feeding front shell from outside to inside, a plurality of seed taking grooves are uniformly arranged at intervals along the edge of the circumferential surface of the seed metering disc, and the annular inner side of each seed taking groove is respectively provided with a seed stirring groove;

each seed taking notch is internally provided with a seed sucking hole, the annular outer side of the seed sucking hole is provided with a long vacuum chuck, the long vacuum chuck is positioned in the seed taking notch, one side wall of the seed taking notch and the bottom surface of the seed taking notch form a 60-degree included angle, the other side wall of the corresponding seed taking notch is perpendicular to the bottom surface of the seed taking notch, the seed stirring groove is arc-shaped, the end part of the seed stirring groove connected with the seed taking notch is higher than the bottom surface of the seed taking notch, the groove surface of the seed stirring groove consists of an arc-shaped groove surface and an inclined surface-shaped groove surface, the arc-shaped groove surface and the inclined surface-shaped groove surface are intersected at the bottom of the seed stirring groove, the outer side of the seed stirring groove is provided with a concave curve clamping groove with the same radian as the seed stirring groove, and an anti-collision rubber strip is arranged in the concave curve clamping groove.

According to the invention, a barrel-shaped seed inlet channel is arranged at the upper part of the outer side surface of the primary seed feeding front shell, a seed inlet is arranged at the bottom of the seed inlet channel and is communicated with a cylindrical cavity of the primary seed feeding front shell, a seed inlet adjusting plate is arranged at the seed inlet of the inner side surface of the primary seed feeding front shell, the seed inlet adjusting plate comprises an upper adjusting plate, a lower adjusting plate, a baffle plate and an upper adjusting mechanism and a lower adjusting mechanism, a chute is arranged between the upper adjusting plate and the lower adjusting plate, the baffle plate is positioned right in front of the seed inlet, the upper adjusting plate and the lower adjusting mechanism are connected, a plurality of vertical sliding rails are arranged on the inner side surface of the primary seed feeding front shell, and the upper adjusting plate, the lower adjusting plate and the baffle plate are respectively arranged between the vertical sliding rails in a sliding manner;

the up-down adjusting mechanism comprises a vertical adjusting baffle notch positioned on the one-time seed feeding front shell and a seed inlet adjusting rod positioned in the adjusting baffle notch, wherein the seed inlet adjusting rod vertically slides in the adjusting baffle notch, a seed inlet adjusting pointer, a seed inlet adjusting spring and a seed inlet adjusting nut are sequentially sleeved on the seed inlet adjusting rod from inside to outside, and a dial is correspondingly arranged on the outer side wall of the one-time seed feeding front shell.

The cylindrical cavity is sequentially divided into a seed filling area I, a self-cleaning area II, a forced seed cleaning area III, a seed carrying area IV and a seed throwing area V along the rotation direction of the seed metering disc 1, a flexible seed separation baffle is arranged between the forced seed cleaning area III and the seed carrying area IV, the flexible seed separation baffle comprises a fixing plate and a seed separation pore plate which are vertically connected, the upper end and the lower end of the fixing plate are respectively fixedly connected with a seed throwing front shell, and a plurality of square notches are arranged on the seed separation pore plate at intervals.

The middle part of the inner side surface of the shell body after the primary seed feeding is provided with a triangular supporting ring, the three top ends of the supporting ring are respectively provided with bolt holes, the fixed connection between the shell body and the negative pressure shell component after the primary seed feeding is realized through bolts in the bolt holes, the horseshoe-shaped vacuum chamber is arranged along the annular circumference of the inner side surface of the once seed-throwing rear shell, the horseshoe-shaped vacuum chamber is arranged corresponding to seed sucking holes on the circumferential edge of the seed metering disc, a sealing gasket is arranged at the horseshoe-shaped vacuum chamber, and an air inlet is formed in the once seed-throwing rear shell corresponding to the top end of the horseshoe-shaped vacuum chamber. The triangular support ring is connected with the annular side wall of the horseshoe-shaped vacuum chamber outside the triangular support ring through the reinforcing rib plate.

The lower part of the inner side surface of the shell body after the primary seed feeding is provided with a fixing frame, and a flexible seed discharging mechanism is arranged at the fixing frame; the flexible seed discharging mechanism comprises a seed discharging wheel connecting rod and a seed discharging wheel, one end of the seed discharging wheel connecting rod is hinged with the fixing frame, the bottom of the other end of the seed discharging wheel connecting rod is rotationally provided with the flexible seed discharging wheel, a plurality of protruding column teeth are evenly arranged at intervals along the circumferential direction of the flexible seed discharging wheel, the protruding column teeth are correspondingly inserted into the seed suction holes, and the middle part of the seed discharging wheel connecting rod is connected with the inner side surface of the once seed feeding rear shell through a spring II.

The top end of the seed discharging opening fixing frame is fixedly connected with the bottom of the primary seed feeding front shell, and the bottom end of the seed discharging opening fixing frame is fixedly connected with the secondary seed feeding device.

The secondary seed feeding device comprises a secondary seed feeding front shell and a secondary seed feeding rear shell, wherein the secondary seed feeding front shell is fixedly connected with the secondary seed feeding rear shell to form a secondary seed discharging cavity, an upper synchronous pulley, a lower synchronous pulley and a synchronous belt matched with the synchronous pulleys are arranged in the secondary seed discharging cavity along the height direction, a plurality of spoon-like poking fingers are arranged on the synchronous belt at intervals, a rotating shaft I is fixedly arranged at the center of the upper synchronous pulley, and the rotating shaft I is rotationally connected with the secondary seed feeding front shell and the secondary seed feeding rear shell;

the center of lower synchronous pulley is fixed with pivot II, pivot II is through the outer spherical bearing of slider formula area seat with throw kind preceding casing and the secondary throw kind back casing rotation connection, the secondary is thrown kind preceding casing and is thrown kind back casing on all being equipped with the notch, the both ends of pivot II slide respectively and set up in the notch, the top and the lead screw fixed connection of outer spherical bearing of slider formula area seat, the upper portion of lead screw is with fix the square seat bench threaded connection at the casing middle part before throwing kind preceding casing and the secondary throw kind back casing, the slider formula is thrown kind preceding casing and the secondary outside of outer spherical bearing of slider formula area seat and is thrown kind back casing on being fixed with the slide rail recess respectively, slider formula outer spherical bearing of area seat slides from top to bottom in the slide rail recess.

The beneficial effects of the invention are as follows:

(1) The seed receiving space is only single particle due to the structural design of the seed taking notch, so that the possibility of occurrence of one-hole multi-suction phenomenon is reduced; the seed taking notch is slightly deeper than the seed stirring groove, so that the stepped staggered layer part plays a certain role in supporting seeds in the seed carrying process, and the negative pressure consumption is reduced; simultaneously, the inclined design of the open outer ring surface and the left end surface of the seed taking notch can effectively improve the seed feeding effect, so that seeds can be smoothly separated from the seed taking notch, and the possibility of difficult seed feeding is avoided;

(2) The seed stirring groove is arc-shaped, and the curve is attached to the moving track of the seed coiling along with the seed, so that the mobility of the population in a seed filling area is effectively enhanced, the seed filling effect is improved, the phenomenon of miss seeding is avoided, and meanwhile, the design of the cross section of the half-cambered surface half-inclined surface can ensure that peanut seeds with different movement forms are effectively driven and guided, so that the peanut seeds smoothly flow into the seed taking notch from the inner side to the outer side of the seed plate along the curve of the groove;

(3) The anti-collision adhesive tape can further improve the disturbance effect on the population in the seed filling process, strengthen the fluidity of the population, the installation of the long vacuum sucker can further improve the adsorption capacity, the seeds are coated under the action of negative pressure, and meanwhile, the difficult problem that the peanut seeds are easy to damage in high-speed operation can be effectively solved by selecting the flexible materials of the two materials;

(3) The design of the two-stage flexible seed cleaning mechanism can further avoid the phenomenon of one hole and multiple suction under individual conditions, so that the phenomenon of rebroadcasting is caused, and meanwhile, the contact parts of the upper seed cleaning mechanism and the lower seed cleaning mechanism and the seeds are made of flexible brushes, so that the damage condition to peanut red coats can be effectively reduced, and the higher emergence rate is ensured.

(4) Through the flexible seed separation baffle, seeds falling in the seed filling area and the seed cleaning area are effectively isolated from the seed feeding area, the possibility that the cleaned seeds fall into the seed discharging port to generate a rebroadcast phenomenon is avoided, and meanwhile, the damage to peanut seeds is effectively avoided due to the selection of the flexible rubber material;

(5) According to the novel peanut seed sowing device, through the air suction principle, negative pressure is filled between the seed sowing disc and the horseshoe-shaped negative pressure vacuum chamber, peanut seeds are stably adsorbed on the holes, the whole seed sowing process is completed, the damage rate of the seeds is effectively reduced compared with that of a mechanical seed sowing device, the requirements on the size and shape of the seeds are reduced, and the working efficiency is improved.

(6) The seed inlet adjusting plate is arranged at the seed inlet, so that the flexible adjustment of the peanut seed inlet amount is realized;

(6) Through setting up the secondary and throw kind of device, effectively solved the easy seed spring dystopy problem that produces of traditional mode of throwing under the high-speed operation, can effectively guarantee that the speed of throwing out of peanut seed and the single speed of advancing of seed metering match, simultaneously its inside hold-in range's class spoon design can effectively keep the stability of peanut transportation process in addition, falls into in the kind ditch accurately.

In conclusion, the peanut seeding device can effectively realize high-speed precision low-loss seeding operation of peanuts, and the problems of low speed, high seeding damage degree and the like of the peanut seeding device in the operation process are obviously solved.

Drawings

FIG. 1 is an exploded schematic view of the overall structure of the present application;

FIG. 2 is a schematic diagram of the front view of the present application;

FIG. 3 is a schematic rear view of the present application;

FIG. 4 is a cross-sectional view taken along section A-A in FIG. 3;

FIG. 5 is a rear view of the one-time seed metering front housing;

FIG. 6 is a schematic view of the structure of a seed plate;

FIG. 7 is a schematic view of a partial structure of a seed plate;

fig. 8 is a schematic view of the structure at the seed feeding adjustment plate.

In the figure: 1, a seed feeding channel; 2, a nut I; 3, adjusting a pointer by supernatant seed; 4, a spring I; 5 adjusting plates; 6, cleaning a seed-cleaning arc plate; 7, fixing the clamping seat; 8, cleaning an arc brush; 9 a flexible separator plate; 901 fixing plates; 902 seed separating pore plates; 10 seed inlet adjusting plates; 11, seed cleaning annular plates; 12, discharging a seed cleaning annular brush; 13 seed metering discs; 14 a sealing gasket; 1401 upper and lower adjusting plates; 1402 baffles; 1403 vertical sliding rail I; 1404 vertical slide rail II; 1405 vertical slide rail iii; 15 seed metering rotating shafts; 16 a negative pressure housing assembly; 17 air inlets; 18 a shell after one seed feeding; 19 fixing frames; 20 springs II; 21 a seed discharging wheel connecting rod; 22 seed discharging wheels; 23 rotating shafts I; 24 bearing seats; 25 shells after secondary seed feeding; 26 lead screw; 27 sliding block type outer spherical bearing with seat; 28, a rotating shaft II; 29 notches; 30 synchronous belt; 31 kinds of spoon-shaped poking fingers; 32 lower synchronous pulleys; 33 a secondary seed feeding front shell; 34 slide rail grooves; 35 square seat stand; 36 seed discharging port fixing frames; 37 elongate vacuum cups; 38, an anti-collision rubber strip; 39 dial I; 40 adjusting baffle notch; 41 seed inlet adjusting pointer; 42 seed inlet adjusting springs; 43 seed inlet adjusting rod; 44 seed inlet adjusting nuts; 45 seed cleaning device slots; 46, seed clearing and adjusting pointers; 47 seed cleaning adjusting springs; 48, seed cleaning adjusting nuts; 49 seed feeding front shells; a seed cleaning device supporting plate is arranged under 50; 51 an inner notch; 52 center screw; 53 vacuum chambers; 54 seed taking notch; 55 stirring grooves; 5501 arc-shaped groove surface; 5502 bevel-shaped groove surfaces; 56 seed sucking holes; 57 concave curve card slot.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 8, the air-aspiration type peanut flexible high-speed precise seed metering device comprises a primary seed metering device and a secondary seed metering device, wherein the secondary seed metering device is communicated with the bottom of the primary seed metering device.

The primary seed feeding device comprises a primary seed feeding front shell 49, a primary seed feeding rear shell 18 and a seed metering disc 13, wherein the primary seed feeding front shell 49 and the primary seed feeding rear shell 18 are fixedly connected through bolts, a cylindrical cavity is formed between the primary seed feeding front shell 49 and the primary seed feeding rear shell 18, the seed metering disc 13 is arranged in the cylindrical cavity, a seed up-cleaning mechanism, a seed down-cleaning mechanism and a flexible seed separating plate 9 are arranged between the primary seed feeding front shell 49 and the seed metering disc 13, and a sealing gasket 14, a negative pressure shell assembly 16 and a flexible seed discharging mechanism are arranged between the seed metering disc 13 and the primary seed feeding rear shell 18.

The upper part of the outer side surface of the primary seed feeding front shell 49 is provided with a barrel-shaped seed feeding channel 1, the bottom of the seed feeding channel 1 is provided with a seed feeding port, and the seed feeding port is communicated with a cylindrical cavity of the primary seed feeding front shell. As shown in fig. 3, a seed inlet adjusting plate 14 is arranged at the seed inlet of the inner side surface of the primary seed feeding front casing 49, the seed inlet adjusting plate 14 comprises an upper adjusting plate 1401, a lower adjusting plate 1402 and an upper adjusting mechanism and a lower adjusting mechanism, a chute with a certain width is arranged between the upper adjusting plate 1401 and the lower adjusting plate 1402, the baffle 1402 is positioned right in front of the seed inlet, the upper adjusting plate 1401 and the lower adjusting mechanism are connected, and an integrated structure is formed between the upper adjusting plate 1401 and the baffle 1402. A plurality of vertical sliding rails are arranged on the inner side surface of the primary seed feeding front shell 49, and an upper and lower adjusting plate 1401 and a baffle 1402 are respectively arranged between the vertical sliding rails. In this embodiment, including three vertical slide rail, be vertical slide rail I1403, vertical slide rail II 1404 and vertical slide rail III 1405 respectively, wherein slide rail II 1404 and slide rail III 1405 are located the left and right both sides of seed inlet, and upper and lower regulating plate 1401 slides and sets up between slide rail I1403 and slide rail II 1404, and baffle 1402 slides and sets up between slide rail II 1404 and slide rail III 1405. Under the regulating action of the upper and lower regulating mechanism, the upper and lower regulating plate 1404 drives the baffle 1402 to slide up and down along the vertical slide rail, and the baffle 1402 controls the size of the seed inlet, so that the seed inlet amount of peanut seeds can be flexibly regulated and controlled.

The up-down adjusting mechanism comprises a vertical adjusting baffle notch 40 positioned on the one-time seed feeding front shell and a seed inlet adjusting rod 43 positioned in the adjusting baffle notch 40, wherein the seed inlet adjusting rod 43 can slide up and down in the adjusting baffle notch 40. The seed inlet adjusting pointer 41, the seed inlet adjusting spring 42 and the seed inlet adjusting nut 44 are sequentially sleeved on the seed inlet adjusting rod 43 from inside to outside, and a dial 39 is correspondingly arranged on the outer side wall of the primary seed feeding front shell and used for displaying the height of the seed inlet adjusting rod 43. The seed inlet adjusting nut 44 is fixedly connected with the seed inlet adjusting rod 43 in a threaded connection mode, and in the process of screwing the seed inlet adjusting nut 44, the seed inlet adjusting spring 42 and the seed inlet adjusting pointer 41 are pressed between the seed inlet adjusting nut 44 and the primary seed feeding front shell, and the position of the seed inlet adjusting rod 43 is fixed under the elastic force of the seed inlet adjusting spring 42. When the vertical height of the seed inlet adjusting plate 14 needs to be adjusted, the seed inlet adjusting pointer 41 is pulled outwards, so that the seed inlet adjusting spring 42 between the seed inlet adjusting pointer 41 and the seed inlet adjusting nut 44 is compressed again, the elastic force of the seed inlet adjusting spring 42 cannot act on the primary seed feeding front shell, the seed inlet adjusting rod 43 is pulled upwards or pushed downwards through the seed inlet adjusting pointer 41, and the seed inlet adjusting rod 43 drives the seed inlet adjusting plate 14 to move up and down in the process of sliding up and down in the adjusting baffle notch 40, so that the size of the seed inlet is adjusted, and the accurate adjustment of the seed inlet amount of peanut seeds is realized. After the seed inlet adjusting plate is adjusted to the designated height, the seed inlet adjusting pointer 41 is loosened, and the fixed connection between the seed inlet adjusting plate 14 and the primary seed feeding front shell is automatically realized under the elastic action of the seed inlet adjusting spring 42.

The seed-cleaning mechanism is located at the top of the one-time seed-feeding front housing 49, and the seed-cleaning mechanism is located below the seed-cleaning mechanism. The seed cleaning mechanism comprises an adjusting plate 5 and a seed cleaning arc-shaped plate 6, the adjusting plate 5 is fixed at the top of a seed feeding front shell 49, an adjusting groove which is arranged along the radial direction of the seed feeding front shell is formed in the adjusting plate 5, the bottom of the seed cleaning arc-shaped plate 6 is fixed with a seed cleaning arc-shaped brush 8, and the seed cleaning arc-shaped brush 8 is positioned in a cylindrical cavity and at the front side of a seed metering disc. The both ends of the arc-shaped plate 6 of the supernatant seed are respectively connected with two fixed clamping seats 7 fixed at the top of the one-time seed feeding front shell in a sliding way through connecting rods, sliding grooves are formed in the fixed clamping seats 7 and are arranged along the radial direction of the one-time seed feeding front shell, the connecting rods are arranged in the sliding grooves in a sliding way, sliding connection between the arc-shaped plate 6 of the supernatant seed and the fixed clamping seats 7 is realized, and the arc-shaped plate 6 of the supernatant seed can drive the arc-shaped brush 8 of the supernatant seed to reciprocate along the radial direction of the one-time seed feeding front shell. The adjusting plate 5 is connected with the supernatant seed arc plate 6 through a screw rod, the screw rod penetrates through an adjusting groove of the adjusting plate 5 and the supernatant seed arc plate 6 respectively, the supernatant seed adjusting pointer 3, the spring I4 and the nut I2 are sleeved on the screw rod from inside to outside in sequence, the nut I2 is screwed, elastic force is generated in the spring I4, the supernatant seed arc plate 6 is tightly pressed on the adjusting plate 5 by utilizing the elastic force of the spring I4, and the fixed connection between the supernatant seed arc plate 6 and the adjusting plate 5 is realized. When the position of the arc-shaped seed cleaning brush 8 needs to be adjusted, the seed cleaning adjusting pointer 3 is pulled, the spring I4 between the seed cleaning adjusting pointer 3 and the nut I2 is compressed again, the elastic force of the spring I4 cannot act on the arc-shaped seed cleaning plate 6, the screw rod is pulled upwards or pushed downwards through the seed cleaning adjusting pointer 3, and the screw rod drives the arc-shaped seed cleaning plate 6 and the arc-shaped seed cleaning brush 8 to move along the radial direction of the shell before one-time seed feeding in the process of sliding up and down in the adjusting groove.

The seed-cleaning mechanism comprises a seed-cleaning annular plate 11, a seed-cleaning annular brush 12 is arranged on the side surface of the seed-cleaning annular plate 11 facing the seed metering disc, and the seed-cleaning annular brush 12 is positioned below the seed-cleaning arc-shaped brush 8. The seed-cleaning annular plate 11 is fixed with a central screw 52 towards one side of the seed-feeding front shell, the top of the inner wall of the seed-feeding front shell is fixed with a seed-cleaning device supporting plate 50, a radial inner groove opening 51 is formed in the seed-cleaning device supporting plate, a seed-cleaning device groove opening 45 is correspondingly formed in the seed-feeding front shell, the end part of the central screw 52 sequentially penetrates through the inner groove opening 51 and the seed-cleaning device groove opening 45 and is positioned on the outer side of the seed-feeding front shell, a seed-cleaning adjusting pointer 46, a seed-cleaning adjusting spring 47 and a seed-cleaning adjusting nut 48 are sequentially arranged at the side end part of the central screw from inside to outside, and the central screw can radially slide along the inner groove opening 51 and the seed-cleaning device groove opening 45. The seed-discharging adjusting nut 48 is screwed, and the fixed connection between the seed-discharging annular plate 11 with the central screw and the one-time seed-feeding front shell is realized by utilizing the elasticity in the seed-discharging adjusting spring 47. When the position of the seed-cleaning annular brush 12 needs to be adjusted, the seed-cleaning adjusting pointer 46 is pulled, so that the seed-cleaning adjusting spring 47 between the seed-cleaning adjusting pointer 46 and the seed-cleaning adjusting nut 48 is compressed again, at the moment, the elastic force of the seed-cleaning adjusting spring 47 cannot act on the seed-feeding front shell once, the center screw 52 is pulled upwards or pushed downwards through the seed-cleaning adjusting pointer 46, and in the process that the center screw slides in the inner notch 51 and the seed-cleaning device notch 45 in the radial direction, the seed-cleaning annular brush 12 is driven to move in the radial direction of the seed-feeding front shell once.

By arranging the seed-up cleaning mechanism and the seed-down cleaning mechanism, the phenomenon of replay caused by one-hole multi-suction in individual cases can be further avoided. Meanwhile, the contact parts of the upper seed cleaning mechanism and the lower seed cleaning mechanism with seeds are respectively provided with a flexible brush, so that the damage condition to peanut red coats can be effectively reduced, and a higher emergence rate is ensured.

As shown in fig. 2, according to the working process from the entering of seeds into the cylindrical cavity to the discharging from the seed metering disc, the cylindrical cavity is sequentially divided into a seed charging area i, a self-cleaning area ii, a forced seed cleaning area iii, a seed carrying area iv and a seed feeding area v along the rotation direction of the seed metering disc 13, wherein the seed charging area i is positioned near the seed inlet, i.e. at the bottom of one side of the cylindrical cavity, and the seed feeding area v is positioned above the secondary seed feeding device, i.e. at the bottom of the other side of the cylindrical cavity. A flexible seed separation baffle 9 is arranged between the forced seed cleaning area III and the seed carrying area IV, the flexible seed separation baffle 9 comprises a fixing plate 901 and a seed separation pore plate 902 which are vertically connected, the upper end and the lower end of the fixing plate 901 are respectively fixedly connected with the primary seed feeding front shell 49 through bolts, a plurality of square notches are formed in the seed separation pore plate 902 at intervals, the problem that the peanut seeds fall into the seed feeding area V in the seed filling area I, the self-cleaning area II and the forced seed cleaning area III can be effectively avoided, and meanwhile, damage to the peanut seeds is avoided due to the selection of flexible materials.

As shown in fig. 6 and 7, the seed metering disc 13 is an annular disc, a seed metering rotating shaft 15 is fixed at the center of the seed metering disc 13, and the seed metering rotating shaft 15 drives the seed metering disc 13 to rotate. The circumference surface of the seed metering disc 13 facing the primary seed metering front shell 49 is provided with a seed taking notch 54 and a seed stirring groove 55 from outside to inside in sequence. A plurality of seed taking grooves 54 are uniformly arranged at intervals along the edge of the circumferential surface of the seed metering disc 13, and the seed stirring grooves 55 are arranged in one-to-one correspondence with the seed taking grooves 54, namely, the annular inner side of each seed taking groove 54 is respectively provided with a seed stirring groove 55.

Each seed taking notch 54 is respectively provided with a seed sucking hole 56, the outer side of the ring shape of the seed sucking hole 56 is provided with a long vacuum chuck 37, and the long vacuum chuck 37 is positioned in the seed taking notch 54, so that the adsorption capacity of the seed sucking holes can be further improved, and seeds can be coated under the action of negative pressure. The width of the seed taking slot 54 allows only one seed, and structurally avoids the phenomenon of one hole and multiple suction. The side wall of one side of the seed taking notch 54 forms an included angle of 60 degrees with the bottom surface of the seed taking notch 54, and the side wall of the other side of the corresponding seed taking notch is perpendicular to the bottom surface of the seed taking notch 54, so that the seeds can be smoothly fed.

The seed stirring groove 55 is arc-shaped, one end of the seed stirring groove 55 is communicated with the seed taking groove 54, the depth of the seed taking groove 54 is lower than the height of the end part of the seed stirring groove 55 connected with the seed taking groove, namely the end part of the seed stirring groove 55 connected with the seed taking groove 54 is higher than the bottom surface of the seed taking groove 54, the seed holding function can be effectively achieved in the seed carrying process, the power consumption is further reduced, and the phenomenon of miss seeding caused by insufficient suction is avoided. The edges of each part of the seed stirring groove 55 are subjected to chamfering treatment, so that the seed filling effect is enhanced while the fluidity of the seed filling process population is improved, and meanwhile, the internal population is formed into stable and ordered seed flow. The groove surface of the seed stirring groove 55 consists of two parts, namely an arc-shaped groove surface 5501 and an inclined-surface-shaped groove surface 5502, wherein the arc-shaped groove surface 5501 and the inclined-surface-shaped groove surface 5502 are intersected at the bottom of the seed stirring groove 55, and the design of the groove surface of the semi-arc-surface semi-inclined surface can ensure that peanut seeds with different movement forms can be effectively driven and guided, so that the peanut seeds smoothly flow into the seed taking notch from the inner side to the outer side of the seed metering disc along the curve of the seed stirring groove. The outside of stirring kind recess 55 is equipped with the concave curve draw-in groove 57 the same with stirring kind recess radian, installs crashproof adhesive tape 37 in the concave curve draw-in groove 57, crashproof adhesive tape 37 can further improve the disturbance effect to the population in-process of filling kind, strengthens the mobility of population. In this embodiment, anticollision adhesive tape and rectangular vacuum chuck are made by flexible material such as rubber, silica gel that have the cushioning effect, can effectively solve the easy damaged difficult problem of peanut seed under the high-speed operation.

The middle part of the inner side surface of the shell 18 is provided with a triangular supporting ring after one-time seed feeding, the three top ends of the supporting ring are respectively provided with bolt holes, and the fixed connection between the shell and the negative pressure shell assembly 16 after one-time seed feeding is realized through bolts in the bolt holes. A horseshoe-shaped vacuum chamber 53 is arranged along the annular circumference of the inner side surface of the once seed-metering shell, and the horseshoe-shaped vacuum chamber 53 is arranged corresponding to the seed-sucking holes at the circumferential edge of the seed metering disc. A sealing gasket 14 is provided at the horseshoe-shaped vacuum chamber 53. A through hole is arranged on the shell 18 after one time seed feeding corresponding to the top end of the horseshoe-shaped vacuum chamber, and an air inlet 17 is formed by the through hole and an outer welding pipe orifice. The triangular support ring is connected with the annular side wall of the horseshoe-shaped vacuum chamber outside the triangular support ring through the reinforcing rib plate.

The lower part of the inner side surface of the shell body after one time seed feeding is provided with a fixing frame 19, and a flexible seed discharging mechanism is arranged at the fixing frame 19. The flexible seed discharging mechanism comprises a seed discharging wheel connecting rod 21 and a seed discharging wheel 22, one end of the seed discharging wheel connecting rod 21 is hinged with the fixing frame 19, the bottom of the other end of the seed discharging wheel connecting rod 21 is rotationally provided with the flexible seed discharging wheel 22, in the embodiment, the flexible seed discharging wheel 27 is made of rubber materials, a plurality of protruding column teeth are uniformly arranged at intervals along the circumferential direction of the flexible seed discharging wheel 22, in the embodiment, three protruding column teeth are arranged at intervals on the flexible seed discharging wheel 22, the end faces of the column teeth are subjected to round corner treatment, and the protruding column teeth are correspondingly inserted into the seed sucking holes 56. The middle part of the seed discharging wheel connecting rod 21 is connected with the inner side surface of the shell 18 after one-time seed feeding through a spring II 20. In the rotation process of the seed metering disc 13, the flexible seed discharging wheel 22 is driven to rotate through the contact of the seed metering disc 13 and the convex column teeth, and the distance between the convex column teeth is reasonably set, so that when each seed sucking type hole passes through the flexible seed discharging mechanism, the corresponding convex column teeth are inserted into the seed sucking type hole, thereby removing the peanut neutralization and remaining chips in the seed sucking type hole, avoiding blocking the hole and affecting the whole seed discharging effect.

In this embodiment, the sealing gasket is made of one antifriction self-lubricating material of rubber, nylon and polytetrafluoroethylene, and the anti-collision adhesive tape and the long vacuum sucker are made of flexible materials with buffering effect, such as rubber, silica gel and the like.

The bottom of the primary seed feeding front shell 49 is provided with an arc notch, the top end of the seed discharging opening fixing frame 36 is fixedly connected with the bottom of the primary seed feeding front shell 49 through a bolt, and the bottom end of the seed discharging opening fixing frame 36 is fixedly connected with the secondary seed feeding device through a bolt.

As shown in fig. 1, the secondary seed feeding device comprises a secondary seed feeding front shell 33 and a secondary seed feeding rear shell 25, wherein the secondary seed feeding front shell 33 and the secondary seed feeding rear shell 25 are fixedly connected through bolts, so that a secondary seed feeding cavity is formed between the secondary seed feeding front shell 33 and the secondary seed feeding rear shell 25, and secondary seed feeding openings are formed at the bottoms of the secondary seed feeding front shell 33 and the secondary seed feeding rear shell 25. In the secondary seed discharging chamber, an upper and a lower synchronous pulleys and a synchronous belt 30 wound on the synchronous pulleys are arranged in the height direction. A plurality of spoon-like poking fingers 31 are arranged on the synchronous belt 30 at intervals, and the spoon-like poking fingers 31 realize inoculation and secondary seed metering. The center of the upper synchronous pulley is fixedly provided with a rotating shaft I23, two ends of the rotating shaft I23 are respectively in rotary connection with a secondary seed feeding front shell 33 and a secondary seed feeding rear shell 25 through bearing seats 24, and the two bearing seats 24 are respectively in fixed connection with the secondary seed feeding front shell 33 and the secondary seed feeding rear shell 25. The center of the lower synchronous pulley 32 is fixed with a rotating shaft II 28, and the rotating shaft II 28 is rotationally connected with a secondary seed feeding front shell 33 and a secondary seed feeding rear shell 25 through a sliding block type outer spherical bearing 27. The secondary seed-throwing front shell 33 and the secondary seed-throwing rear shell 25 are respectively provided with a notch 29, two ends of a rotating shaft II 28 are respectively arranged in the notches 29 in a sliding way, and the sliding block type outer spherical bearing 27 with a seat is respectively connected with a square seat 35 fixed at the middle parts of the secondary seed-throwing front shell 33 and the secondary seed-throwing rear shell 25 through a screw rod 26. In this application, be equipped with the internal thread in square seat platform 35, pass through threaded connection between the upper end of lead screw 26 and the square seat platform 35, the lower extreme and the slider formula of lead screw 26 take a seat ectosphere bearing 27 fixed connection. The sliding rail grooves 34 are respectively fixed on the secondary seed feeding front shell 33 and the secondary seed feeding rear shell 25 outside the sliding block type outer spherical bearing 27, and the sliding block type outer spherical bearing 27 can slide up and down in the sliding rail grooves 34. When the tensioning degree of the synchronous belt 30 needs to be adjusted, the screw rod 26 is rotated, the screw rod 26 is meshed with the square seat 35 through threads, the screw rod 26 rotates and drives the sliding block type outer spherical bearing 27 to move up and down along the sliding rail groove 34, and the sliding block type outer spherical bearing 27 drives the rotating shaft II 28 to move up and down in the notch 29, so that the position of the lower synchronous pulley 32 is adjusted, and the tensioning degree of the synchronous belt 30 is adjusted.

The working principle of the application is as follows: when the seed metering device is operated at a high speed, the fan is connected with the air inlet of the seed metering device through the hose, the generated working negative pressure enters the vacuum chamber through the air inlet, the driving motor drives the seed metering rotating shaft to rotate, peanut seeds enter the seed charging area I through the seed charging channel 1 to form population accumulation, and when the seed feeding amount is required to be regulated, the peanut seeds are controlled through the sliding seed inlet regulating baffle plate. The seed metering dish is driven by the seed metering pivot and is rotated synchronously, the population is under stirring the disturbance of kind recess and the protection of anticollision adhesive tape, flow along recess to getting kind notch department in order, the peanut seed that falls into in getting kind notch is adsorbed on inhaling kind type hole under the effect of negative pressure air current, long vacuum chuck forms the cladding to the seed under the negative pressure effect simultaneously, reinforcing adsorption capacity when protecting the seed, the seed rotates clockwise along with the seed metering dish, when turning to from seed zone II, the peanut seed that does not inhale firmly is under the effect of gravity, self-dropping to fill seed zone I, when the unnecessary seed that still does not drop reaches forcing clear kind III, clear under the doublestage dual effect of last clear kind arc brush and clear kind annular brush down, thereby guarantee single hole single-grain precision seeding, simultaneously because the design of flexible baffle plate has effectively blocked clear seed and has fallen into and has thrown kind zone V, the emergence of reseeding phenomenon has been avoided. When the seeds rotate to the seed feeding area V along with the seed metering disc, the seeds drop vertically downwards in a free falling state along with the blocking of negative pressure air flow, stably and orderly fall into a spoon-like shifting finger in a secondary seed feeding device rotating at the same speed through a seed metering port fixing frame, move along with a walking belt, and the horizontal component speed of the seeds falling into a seed bed is close to zero at the moment of the seeds falling into the ground, so that the high-speed precise seed metering operation is finally completed. Meanwhile, after peanut seeds fall through the seed suction type holes, the convex column teeth on the flexible seed discharging wheel are respectively inserted into the seed suction type holes, so that the left-over scraps are effectively removed, and the problem that the whole seed discharging effect is affected due to the blockage of the seed suction holes is avoided.

The air suction type flexible high-speed precise peanut seed metering device provided by the invention is described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. An air-aspiration type peanut flexible high-speed precise seed metering device is characterized in that: the device comprises a primary seed feeding device and a secondary seed feeding device, wherein the secondary seed feeding device is communicated with the bottom of the primary seed feeding device;

the primary seed feeding device comprises a primary seed feeding front shell (49), a primary seed feeding rear shell (18) and a seed metering disc (13), wherein the primary seed feeding front shell (49) and the primary seed feeding rear shell (18) are fixedly connected to form a cylindrical cavity, the seed metering disc (13) is arranged in the cylindrical cavity, a seed up-cleaning mechanism, a seed down-cleaning mechanism and a flexible seed separating plate (9) are arranged between the primary seed feeding front shell (49) and the seed metering disc (13), and a sealing gasket (14), a negative pressure shell assembly (16) and a flexible seed discharging mechanism are arranged between the seed metering disc (13) and the primary seed feeding rear shell (18);

the seed feeding device comprises a seed feeding mechanism, a seed feeding arc-shaped brush (8) and a seed feeding arc-shaped brush (8), wherein the seed feeding mechanism is arranged at the top of a seed feeding front shell (49), the seed feeding mechanism is arranged below the seed feeding mechanism, the seed feeding mechanism comprises an adjusting plate (5) and a seed feeding arc-shaped plate (6), the adjusting plate (5) is fixed at the top of the seed feeding front shell (49), an adjusting groove which is arranged along the radial direction of the seed feeding front shell is formed in the adjusting plate (5), the seed feeding arc-shaped brush (8) is fixed at the bottom of the seed feeding arc-shaped plate (6), the seed feeding arc-shaped brush (8) is arranged in a cylindrical cavity and at the front side of a seed feeding disc, two ends of the seed feeding arc-shaped plate (6) are respectively connected with two fixed clamping seats (7) which are fixed at the top of the seed feeding front shell through connecting rods, the adjusting plate (5) and the seed feeding arc-shaped plate (6) are connected through screws, and the screws respectively penetrate through the adjusting groove of the adjusting plate (5) and the seed feeding arc-shaped plate (6), and a seed feeding adjusting pointer (3), a spring I (4) and a nut (2) are sleeved on the screw rod from inside to outside in sequence;

the seed discharging mechanism comprises a seed discharging annular plate (11), a seed discharging annular brush (12) is arranged on the side surface of the seed discharging annular plate (11) facing the seed metering disc, the seed discharging annular brush (12) is positioned below the upper seed discharging arc-shaped brush (8), a central screw rod (52) is fixed on one side of the seed discharging annular plate (11) facing the primary seed feeding front shell, a seed discharging device supporting plate (50) is fixed on the top of the inner wall of the primary seed feeding front shell, a radial inner groove opening (51) is formed in the seed discharging device supporting plate, a seed discharging device notch (45) is correspondingly formed in the primary seed feeding front shell, the end part of the central screw rod (52) sequentially penetrates through the inner groove opening (51) and the seed discharging device notch (45) and is positioned on the outer side of the primary seed feeding front shell, a seed discharging adjusting pointer (46), a seed discharging adjusting spring (47) and a seed discharging adjusting nut (48) are sequentially arranged on the side end part of the central screw rod from inside to outside, and the central screw rod radially slides along the inner groove opening (51) and the seed discharging device notch (45);

the seed metering disc (13) is an annular disc, a seed metering rotating shaft (15) is fixed at the center of the seed metering disc (13), seed taking grooves (54) and seed stirring grooves (55) are sequentially formed in the circumferential surface of the seed metering disc (13) facing the primary seed feeding front shell (49) from outside to inside, a plurality of seed taking grooves (54) are uniformly arranged at intervals along the edge of the circumferential surface of the seed metering disc (13), and the annular inner side of each seed taking groove (54) is provided with a seed stirring groove (55);

each seed taking notch (54) is respectively provided with a seed sucking hole (56), an elongated vacuum chuck (37) is arranged on the annular outer side of the seed sucking hole (56), the elongated vacuum chuck (37) is positioned in the seed taking notch (54), an included angle of 60 degrees is formed between one side wall of the seed taking notch (54) and the bottom surface of the seed taking notch (54), the other side wall of the corresponding seed taking notch is perpendicular to the bottom surface of the seed taking notch (54), the seed stirring groove (55) is arc-shaped, the end part of the seed stirring groove (55) connected with the seed taking notch (54) is higher than the bottom surface of the seed taking notch (54), the groove surface of the seed stirring groove (55) is composed of an arc-shaped groove surface (5501) and an inclined surface-shaped groove surface (5502), the arc-shaped groove surface (5501) is intersected with the bottom of the seed stirring groove (55), the outer side of the seed stirring groove (55) is provided with a concave curve clamping groove (57) with the same radian as the seed stirring groove, and the adhesive tape (37) is installed in the concave curve clamping groove (57).

2. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: the upper part of the outer side surface of the primary seed feeding front shell (49) is provided with a barrel-shaped seed feeding channel (1), the bottom of the seed feeding channel (1) is provided with a seed feeding port, the seed feeding port is communicated with a cylindrical cavity of the primary seed feeding front shell, a seed feeding port adjusting plate (14) is arranged at the seed feeding port of the inner side surface of the primary seed feeding front shell (49), the seed feeding port adjusting plate (14) comprises an upper adjusting plate and a lower adjusting plate (1401), a baffle (1402) and an upper adjusting mechanism and a lower adjusting mechanism, a chute is arranged between the upper adjusting plate (1401) and the baffle (1402), the baffle (1402) is positioned right in front of the seed feeding port, the upper adjusting plate (1401) is connected with the upper adjusting mechanism and the lower adjusting mechanism, a plurality of vertical sliding rails are arranged on the inner side surface of the primary seed feeding front shell (49), and the upper adjusting plate (1401) and the baffle (1402) are respectively arranged between the vertical sliding rails in a sliding way;

the up-down adjusting mechanism comprises a vertical adjusting baffle notch (40) positioned on a one-time seed feeding front shell and a seed feeding port adjusting rod (43) positioned in the adjusting baffle notch (40), the seed feeding port adjusting rod (43) slides up and down in the adjusting baffle notch (40), a seed feeding port adjusting pointer (41), a seed feeding port adjusting spring (42) and a seed feeding port adjusting nut (44) are sequentially sleeved on the seed feeding port adjusting rod (43) from inside to outside, and a dial (39) is correspondingly arranged on the outer side wall of the one-time seed feeding front shell.

3. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: the cylindrical cavity is sequentially divided into a seed charging area I, a self-cleaning area II, a forced seed cleaning area III, a seed carrying area IV and a seed throwing area V along the rotation direction of the seed metering disc (13), the seed throwing area V is located above the secondary seed throwing device, a flexible seed separation baffle (9) is arranged between the forced seed cleaning area III and the seed carrying area IV, the flexible seed separation baffle (9) comprises a fixing plate (901) and a seed separation pore plate (902) which are vertically connected, the upper end and the lower end of the fixing plate (901) are respectively fixedly connected with a primary seed throwing front shell (49), and a plurality of square notches are formed in the seed separation pore plate (902) at intervals.

4. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: the utility model discloses a seed metering device, including seed metering disc, seed metering shell, vacuum housing, air intake, sealing washer, air intake, etc. the medial surface middle part of once throw back casing (18) is equipped with triangle-shaped's holding ring, and three top of holding ring is equipped with the bolt hole respectively, realizes the fixed connection between once throw back casing and the negative pressure shell subassembly (16) through the bolt in the bolt hole, is equipped with horseshoe-shaped vacuum chamber (53) along the annular circumference of once throwing back casing medial surface, and the setting of seed-metering hole that corresponds seed metering disc circumference edge of horseshoe-shaped vacuum chamber (53), horseshoe-shaped vacuum chamber (53) department is equipped with sealing washer (14), is equipped with air intake (17) on throwing back casing (18) that corresponds with the top of horseshoe-shaped vacuum chamber, is connected through the reinforcing rib between triangle-shaped holding ring and the annular lateral wall of its outside horseshoe-shaped vacuum chamber.

5. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: a fixing frame (19) is arranged at the lower part of the inner side surface of the shell after the primary seed feeding, and a flexible seed discharging mechanism is arranged at the fixing frame (19); the flexible seed discharging mechanism comprises a seed discharging wheel connecting rod (21) and a seed discharging wheel (22), one end of the seed discharging wheel connecting rod (21) is hinged to a fixing frame (19), the bottom of the other end of the seed discharging wheel connecting rod (21) is rotatably provided with the flexible seed discharging wheel (22), a plurality of protruding column teeth are uniformly arranged at intervals along the circumferential direction of the flexible seed discharging wheel (22), the protruding column teeth are correspondingly inserted into seed sucking holes (56), and the middle part of the seed discharging wheel connecting rod (21) is connected with the inner side surface of a one-time seed feeding rear shell (18) through a spring II (20).

6. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: the top end of the seed discharging opening fixing frame (36) is fixedly connected with the bottom of the primary seed feeding front shell (49), and the bottom end of the seed discharging opening fixing frame (36) is fixedly connected with the secondary seed feeding device.

7. The air-aspiration type peanut flexible high-speed precise seed metering device according to claim 1, wherein: the secondary seed feeding device comprises a secondary seed feeding front shell (33) and a secondary seed feeding rear shell (25), wherein the secondary seed feeding front shell (33) is fixedly connected with the secondary seed feeding rear shell (25) to form a secondary seed discharging cavity, an upper synchronous pulley, a lower synchronous pulley and a synchronous belt (30) matched with the synchronous pulleys are arranged in the secondary seed discharging cavity along the height direction, a plurality of spoon-like poking fingers (31) are arranged on the synchronous belt (30) at intervals, a rotating shaft I (23) is fixedly arranged at the center of the upper synchronous pulley, and the rotating shaft I (23) is rotationally connected with the secondary seed feeding front shell (33) and the secondary seed feeding rear shell (25);

the center of lower synchronous pulley (32) is fixed with pivot II (28), pivot II (28) is through slider formula outer spherical bearing (27) and secondary throw kind procapsid (33) and secondary throw kind back casing (25) and rotate to be connected, all be equipped with notch (29) on the procapsid (33) and the secondary throw kind back casing (25), the both ends of pivot II (28) slide respectively and set up in notch (29), the top and lead screw (26) fixed connection of slider formula outer spherical bearing (27), the upper portion of lead screw (26) is with fixing square seat (35) threaded connection at the middle part of procapsid (33) and secondary throw kind back casing (25) of throwing kind, be fixed with slide rail groove (34) on slider formula outer spherical bearing (27) outside secondary throw kind procapsid (33) and the secondary throw kind back casing (25) respectively, slider formula outer spherical bearing (27) slide from top to bottom in slide rail groove (34).

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