CN105493715B - A kind of feed mechanism for seed and a kind of seeder - Google Patents

Abstract

The invention discloses a seed metering device and a seed sowing device, which are used for sowing two rows in one ridge. The air chamber and the seed chamber, the top of the housing is provided with a seed inlet, and the bottom of the housing is provided with a sorting unit. The sorting unit includes a sorting box facing the seed discharge opening, and a fixed shaft runs across the inside of the sorting box. The interior of the sorting box is divided into two chambers, the left and the right, based on the longitudinal surface of the middle of the sorting box. The fixed shaft is covered with a shaft sleeve that can rotate around the fixed shaft. The baffle plate, the end of the finger can touch the outside of the seeding disc, and the finger drives the baffle to rotate under the drive of the seeding disc; the above-mentioned seed metering device is installed at the bottom of the seeder. The invention separates the seeds through the seeding unit, and can realize precise sowing in one ridge and two rows.

Description

A seed meter and a seeder

technical field

The invention belongs to the field of agricultural machinery sowing, in particular to a single-ridge double-row air-suction seed metering device.

Background technique

At present, it is an important long-term strategic decision of our country to develop high-quality, high-yield, efficient and sustainable food crop production and accelerate the pace of its industrialization to ensure food security supply. Important food crops in my country include rice, wheat, cotton, corn, etc. These food crops are suitable for hole sowing. The production of hole sowing food crops requires planting in rows and holes. Different planting areas and different varieties have great differences in row spacing and hole spacing. The number of seeds per hole has a great influence on the number of effective seedlings in the field, which in turn affects the yield of food crops. The requirements for the number of grains per hole of different food crop varieties are also different. Accurately controlling the number of seeds per hole can save seeds and reduce the production cost of food crops.

Chinese invention patent CN2679987Y discloses a kind of air-suction type single and double strip universal seed metering device. inside the seed metering device shell, and cooperate with the inner and outer row holes on the seeding tray: the matching part between the end of the suction chamber and the inner row hole of the seeding tray is longer than the matching part with the outer row hole of the seeding tray; the trouser-shaped seed guide hole is arranged on Below the outdoor end of the air suction; on the outer end of the eccentric shaft, a wind pressure regulating pointer handle with a pressure relief air port cover is fixed, and the handle cooperates with the pointer dial on the seed metering device housing.

The above-mentioned seed metering device in the prior art can solve the problem of one ridge and two rows of seed metering, but when the seeds are scraped off and fall into the trouser-shaped seed guide holes, it is easy to cause a variety of seeds to fall at the same time or fail to Accurately discharge into the corresponding seed guide hole, so that the double-row sowing cannot be accurately realized.

Contents of the invention

In order to solve the above problems, the present invention provides a seed metering device and a seeding device. The invention separates the seeds through a sorting unit, and can realize accurate sowing of one ridge and two rows.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A kind of seed metering device, which is used for sowing two rows in one ridge, includes a casing, and a rotatable seeding disk is arranged inside the casing, and the seeding disk separates the inside of the casing to form an air suction chamber and a seed chamber. The top is provided with a seed inlet, the bottom of the housing is provided with a seed discharge port, and the bottom of the seed discharge port is provided with a sorting unit. The sorting unit includes a sorting box facing the seed discharge port. Shaft, the interior of the sorting box is divided into two chambers on the left and right based on the longitudinal surface of the middle of the sorting box. The fixed shaft is covered with a shaft sleeve that can rotate around the fixed shaft. The baffle at the upper entrance, the shaft sleeve is also equipped with a finger, the end of the finger can be against the outside of the seeding disc, the finger is driven by the seeding disc to push the baffle to rotate, and the baffle rotates to the baffle to block When the upper end of one of the chambers is at the entrance, the seeds fall into the other chamber.

As a further optimization of the present invention, the seeding disc includes a plurality of disc teeth evenly distributed on the outer circumference of the seeding disc, and two seeding holes that can absorb seeds are arranged on the seeding disc between adjacent disc teeth; There is an opening at the connection between the plate and the bushing, and a torsion spring is set on the bushing, and the torsion spring is sleeved on the bushing through the opening; the end of the finger can be pressed against the teeth of the bottom seeding disc. , one end of the torsion spring is against the finger, and the other end is against the inner wall of the sorting box.

As a further optimization of the present invention, an acute angle is formed between the finger and the baffle.

As a further optimization of the present invention, the seed metering device further includes a seed metering unit arranged at the bottom of the seed sorting unit, the seed metering unit includes a seed metering head corresponding to the bottom of the chamber, and a seed metering pipe integrally connected to the bottom of the seed metering head.

As a further optimization of the present invention, the seed-discharging head is set as a cone that can easily guide the seeds to fall; the two seed-discharging pipes are misplaced.

As a further optimization of the present invention, the bottom of the seed-discharging tray is provided with a seed-scraping tongue that can scrape the seeds from the seed-discharging holes.

As a further optimization of the present invention, a sprocket wheel that can drive the seed disk to rotate is provided on one side of the seed disk.

As a further optimization of the present invention, the outer side of the sorting box is provided with a connecting piece connected with the casing.

A seeder, characterized in that the above-mentioned metering device is installed at the bottom of the seeder.

Compared with prior art, advantage and positive effect of the present invention are:

1. The seed metering device in the present invention is equipped with a sorting unit, which can accurately guide the seeds scraped from the seed metering tray into the corresponding seed metering pipes, so as to realize accurate sowing of two rows in one ridge;

2. The dislocation arrangement of the seeding pipes in the present invention realizes the dislocation double-row sowing on the ridge;

3. The seed metering disc in the present invention is provided with disc teeth matched with the seed sorting unit. When the seed sorting unit is driven for sorting, no additional driving device is required, which reduces the structural space of the seed metering device.

4. When the seeder in the present invention is equipped with a seed meter with a sorting unit, it can more accurately realize double-row sowing.

Description of drawings

Fig. 1 is the front view of the half shell of the seed metering device in the present invention;

Fig. 2 is the side view of seed metering device among the present invention;

Fig. 3 is a schematic structural view of the seeding tray in Fig. 1;

Fig. 4 is the structural representation of sorting unit in Fig. 1;

Fig. 5 is a side view of the sorting unit in Fig. 1;

Fig. 6 is the sectional view of A-A in Fig. 5;

FIG. 7 is a partial schematic diagram of the baffle in FIG. 4 .

In the above figures: 1. Housing; 2. Seed disc; 21. Plate teeth; 22. Seed hole; 3. Sorting unit; 31. Sorting box; 32. Connector; 33. Fixed shaft; 34 , bushing; 35, torsion spring; 36, finger; 37, baffle; 4, seed unit; 41, seed head; 42, seed pipe; 5, scraping tongue; 6, sprocket.

detailed description

In the following, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and characteristics of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it should be noted that the directions indicated by "inner", "outer", "upper", "lower", "front", "back", "top" and "bottom" of the seed meter or The positional relationship is based on the positional relationship shown in FIG. 1 , which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

Referring to Fig. 1, Fig. 2, Fig. 4 and Fig. 7, as shown in the figure, the seed metering device of the present invention is used for sowing two rows in one ridge, and includes a housing 1, and a rotatable seed metering device is arranged inside the housing 1. Disk 2, the seeding disk 2 divides the inside of the housing 1 longitudinally to form a suction chamber and a seed chamber. There is a sorting unit 3, and the sorting unit 3 includes a sorting box 31 facing the seed discharge port. The upper and lower bottom surfaces of the sorting box 31 are openings, and the inside of the sorting box 31 is traversed by a fixed shaft 33. The inside is divided into left and right two chambers based on the longitudinal plane of the middle part of the sorting box. The fixed shaft 33 is covered with a shaft sleeve 34 that can rotate around the fixed shaft 33. The baffle plate 37 of the opening, the shaft sleeve 34 is also fixedly equipped with a dial finger 36, the dial finger 36 can be against the outer surface of the seeding disc, the dial finger 36 promotes the rotation of the baffle plate 37 driven by the seeding disc 2, and the baffle plate When 37 rotated to block one of the chambers, the seeds fell into another chamber, so that the separation of the two rows of seeds could be realized, so that the sowing was more accurate.

See Figures 3-6. As shown in Figures 3-6, the seeding disc 2 includes a plurality of disc teeth 21 evenly distributed on the outer circumference of the seeding disc 2, and two adsorbable seeds are arranged on the seeding disc 2 between adjacent disc teeth. The seeding hole 22 of the baffle plate 37 and the junction of the axle sleeve 34 are provided with an opening, the axle sleeve 34 is provided with a torsion spring 35, the torsion spring 35 is set on the axle sleeve 34 through the opening, and the dial finger 36 and the baffle plate 37 is an acute angle, the selection of the acute angle depends on the length of the finger, and when the angle is acute, the length of the finger does not need to be too long to drive the baffle to rotate to the upper opening of the chamber, and at an acute angle, The strength of the undulating teeth on the dial finger is optimal, preferably 30 ^o -60 ^o here, and the effect of the acute angle here is that when the dial finger touches the dial teeth, the baffle can move to the left or right position, and when the baffle plate continues to move, the baffle plate is separated from the disc teeth, because there is a certain distance between the disc teeth at the bottom of the seeding disc and the upper opening of the chamber, the displacement can be changed by turning the finger; In the driving state, the end of the dial finger 36 is against the tooth 21 of the bottommost seeding disc, and the baffle plate is at the right or left side. In this embodiment, the baffle plate is at the left side. At the side chamber, one end of the torsion spring 35 abuts on the finger 36, and the other end abuts on the inner wall of the sorting box 31.

Referring to Fig. 5, it is a side view of the sorting unit in Fig. 1 . As shown in Figure 5, the seed metering device also includes a seed metering unit 4 arranged at the bottom of the seed sorting unit 3. The seed metering unit 4 includes a seed metering head 41 corresponding to the bottom of the left and right chambers, and is integrally connected to the seed metering head 41 bottom. Seed pipe 42 of. The seeding head 41 is set as a hollow cone that is easy to guide the seeds to fall; the two seeding pipes 42 are misplaced, so that the distance between the two rows of seeds on the ridge can be adjusted by adjusting the distance between the seeding pipes.

Through the above structure, when the seed meter is discharging seeds, the seeds pass through the seed inlet and enter the seed chamber inside the housing, and the suction chamber sucks air, so that a pressure difference is formed between the suction chamber and the seed chamber, and the seeds flow from the seed chamber Under the action of pressure difference, it is adsorbed to the seeding hole of the seeding disc, and rotates with the seeding disc to the bottom of the seeding opening. When the finger moves, the baffle moves at the same time, and the torsion spring is compressed. When the baffle moves to the top of the right chamber and covers the right chamber, the seed metering unit is in an open state, and the seeds fall from the left chamber to the Discharge from the seeding unit; as the seeding disc continues to rotate, the disc teeth are separated from the finger, and under the action of the torsion spring, the baffle returns to the top of the left chamber to block the left chamber, and the seeds are released from the right chamber The chambers drop into the seeding unit and are discharged; alternate cycles enable double-row sowing.

In addition, the bottom of the seed-discharging tray 2 is provided with a seed-scraping tongue 5 that can scrape the seeds from the seed-discharging hole, and turn to the seed-discharging opening under the seed-discharging tray, and the seeds can be scraped off under the action of the seed-scraping tongue. .

In the present invention, as shown in FIG. 2 , a sprocket 6 that can drive the seed disk 2 to rotate is provided on one side of the seed disk 2 .

In order to connect the sorting unit on the housing, the outside of the sorting box 31 is symmetrically provided with a connecting piece 32 that is connected with the housing 1, and the connecting piece 32 is connected to the housing and the sorting box by bolts. When the sorting unit is needed, the sorting unit can be disassembled or replaced by dismounting bolts.

In addition, the present invention also provides a seeder, the bottom of which is installed with the above-mentioned seed metering device.

Through the seed metering device and the seeding device of the present invention, when the seeds pass through the sorting unit of the seed metering device, when the seeds need to be sown to the left side row on the ridge, the baffle plate moves to the right side to block the right chamber opening, so that Precise seeding is achieved when the seeds are planted.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention to other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solutions of the present invention without departing from the content of the technical solutions of the present invention.

Claims (9)

1. a kind of feed mechanism for seed, for the sowing of a ridge duplicate rows, including housing (1), housing (1) is internally provided with rotatable row Discharge plate (2), top is provided with seed inlet, and bottom is provided with sowing port, and the bottom of sowing port is provided with point kind of a unit (3), divides and plant Unit (3) inside point kind of box (31) including just to point kind of the box (31) of sowing port, having crossed fixing axle (33), in point kind of box (31) Portion's longitudinal surface in the middle of point kind of box is defined and is divided into left and right two chambers, it is characterised in that：Being arranged with fixing axle (33) can be around solid The axle sleeve (34) that dead axle (33) is rotated, being installed with axle sleeve (34) can block the baffle plate (37) of end entrance on any chamber, Reversal means (36) is additionally provided with axle sleeve (34), the end of reversal means (36) can be against the outside of discharge plate (2), and reversal means (36) is in seeding Baffle plate (37) is promoted to rotate under the drive of disk (2), baffle plate (37) is turned to when sheltering from end entrance on the chamber of one of them, is planted Son is fallen into another chamber.

2. feed mechanism for seed according to claim 1, it is characterised in that：Discharge plate (2) is including being distributed on discharge plate (2) excircle On multiple disk teeth (21), two feed outlets of adsorbable seed (22) are provided with the discharge plate between adjacent disc tooth；Baffle plate (37) junction of axle sleeve (34) is provided with opening, is provided with torsion spring (35) on axle sleeve (34), torsion spring (35) is through opening sleeve On axle sleeve (34)；The end of reversal means (36) is against on the disk tooth (21) for turning to bottommost discharge plate, and the one of torsion spring (35) End is against in reversal means (36), and the other end is against on point kind of box (31) inwall.

3. feed mechanism for seed according to claim 1, it is characterised in that：It is at an acute angle between reversal means (36) and baffle plate (37).

4. the feed mechanism for seed according to any one of claim 1-3, it is characterised in that：Feed mechanism for seed also includes being arranged on point kind of a list The seeding unit (4) of first (3) bottom, seeding unit (4) includes seeding head (41) corresponding to cavity bottom, and integrally connected In the discharging tube (42) of seeding head (41) bottom.

5. feed mechanism for seed according to claim 4, it is characterised in that：Seeding head (41) is set to easily guide the cone of seeds fall Body；Two discharging tubes (42) shift to install.

6. feed mechanism for seed according to claim 2, it is characterised in that：The bottom of discharge plate (2) is provided with can be by seed from row What is scraped in kind hole scrapes kind of a tongue (5).

7. feed mechanism for seed according to claim 1, it is characterised in that：The side of discharge plate (2) is provided with and can drive discharge plate (2) sprocket wheel (6) for rotating.

8. feed mechanism for seed according to claim 1, it is characterised in that：Divide and be provided with and housing (1) phase on the outside of kind of box (31) The connector (32) of connection.

9. a kind of seeder, it is characterised in that the bottom of seeder is provided with the feed mechanism for seed described in claim 4.